Alaxala AX2200S Series User manual

AX2200S/AX1250S/AX1240S Software Manual
Configuration Guide Vol. 1
For Version 2.4
AX1240S-S001X-60

Relevant products
This manual applies to the AX2200S, AX1250S, and AX1240S models of switches. The manual describes the
functionality in version 2.4 of the software for the AX2200S, AX1250S, andAX1240S series switches that are
supported by the software OS-LT4, OS-LT3 and OS-LT2, and by optional licenses.
Export restrictions
In the event that any or all ALAXALA products (including technologies, programs and services) described or
contained herein are controlled under any of applicable export control laws and regulations (including the Foreign
Exchange and Foreign Trade Law of Japan and United States export control laws and regulations), such products
shall not be exported without obtaining the required export licenses from the authorities concerned in accordance
with the above laws.
Trademarks
- Ethernet is a registered trademark of Xerox Corporation.
- Microsoft is either a registered trademark or trademark of Microsoft Corporation in the United States and other
countries.
- Windows is a registered trademark of Microsoft Corporation in the United States and other countries.
- RSA and SecurID are trademarks or registered trademarks of RSA Security Inc. in the United States and other
countries.
- Wake on LAN is a registered trademark of IBM Corp.
- MagicPacket is a registered trademark of Advanced Micro Devices, Inc.
- Other company and product names in this document are trademarks or registered trademarks of their respective
owners.
Reading and storing this manual
Before you use the equipment, carefully read the manual and make sure that you understand all safety precautions.
After reading the manual, keep it in a convenient place for easy reference.
Notes
Information in this document is subject to change without notice.
Editions history
July 2012 (Edition 7) AX1240S-S001X-60
Copyright
All Rights Reserved, Copyright(C),2008, 2012, ALAXALA Networks, Corp.

History of Amendments
For version 2.4 (Edition 7)
Summary of amendments
Location and title Changes
Addition of series A description of AX2200S series switches was added.
2 Switch Configuration A description of AX2200S series switches was added.
3 Capacity Limit A description of AX2200S series switches was added.
10 Device Management A description of AX2200S series switches was added.
PowerSaving Functionality A description of AX2200S series switches was added.
13. Ethernet A description of AX2200S series switches was added.
In addition to the above changes, minor editorial corrections were made.
For version 2.3 (Edition 6)
Summary of amendments
Location and title Changes
Capacity Limit In (6) Ring Protocol, the capacity limits for (c) Multi-fault monitoring
functionality was added.
Command Operations In Notes on CLI operation, descriptions in Restrictions on the display
of command line completion and Help were changed.
MAC Address Learning The following conditions were added as triggers that clear the MAC
address table.
A flush control frame is received in a configuration using a
Spanning Tree Protocol and Ring Protocol.
Aflush control frame is received in a configuration using GSRP
and Ring Protocol.
Aflush control frame is received when the multi-fault monitoring
functionality is enabled.
Description of the Ring Protocol A description of the multi-fault monitoring functionality was added.
Settings and Operation for Ring
Protocol A description of the multi-fault monitoring functionality was added.
Using the Ring Protocol with
Spanning Tree Protocols/GSRP Descriptions were changed as the Switch supports ring
configurations in which a device uses both Ring Protocol and a
Spanning Tree Protocol.
Descriptions were changed as the Switch supports ring
configurations in which a device uses both Ring Protocol and a
Spanning Tree Protocol.
In addition to the above changes, minor editorial corrections were made.

For version 2.3 (Edition 5)
Summary of amendments
Location and title Changes
Capacity Limit In (13) Layer 2 authentication functionality, other capacity limits for
common authentication methods were changed.
(15) Capacity limits for uplink redundancy were added.
Command Operations In Notes on CLI operation, descriptions in Restrictions on the display
of command line completion and Help were changed.
Login Security and RADIUS Descriptions for authentication using RADIUS were changed with
the support of RADIUS server group.
Setting examples for login authentication methods were changed
with the support of RADIUS server group.
Descriptions for authentication using RADIUS were changed with
the support of end-by-reject.
Setting examples for login authentication methods were changed
with the support of end-by-reject.
Time Settings and NTP A description for checking the time was added.
Device Management A description of checking the switch environment and the
temperature log was added.
Power Saving Functionality A description about start conditions was added to the cooling fan
control subsection.
Descriptions about port power saving were added.
Descriptions about start mode for the scheduling functionality were
changed with the support of automatic cancel of Schedule-disabled
mode.
Ethernet Notes on connected devices by PoE were added.
In addition to the above changes, minor editorial corrections were made.
For version 2.2 (Edition 4)
Summary of amendments
Location and title Changes
Addition of series A description of AX1250S was added.
Switch Configuration A description of AX1250S was added.
Descriptions were added with the support of the 100BASE-FX
(SFP).
Capacity Limit A description of AX1250S was added.
Descriptions were added with the support of the 100BASE-FX
(SFP).
Time Settings and NTP A description of AX1250S was added.
Descriptions about error locations and recovery processing were
added.
Ethernet Descriptions were added with the support of the 100BASE-FX
(SFP).

In addition to the above changes, minor editorial corrections were made.
For version 2.2 (Edition 3)
Summary of amendments
Location and title Changes
Capacity Limit Capacity limits for login security and RADIUS were added.
Capacity limits for the Ring Protocol were added.
Capacity limits for authentication method groups were addedto IEEE
802.1X, Web authentication, and MAC authentication.
Capacity limits for custom file sets were added to Web
authentication.
Capacity limits for CFM were added.
Login Security and RADIUS A description of the RADIUS server group has been added.
Device Management Operation command names for which the input format was changed
were added to Compatibility between AX1200S series switches.
Layer 2 Switching Overview Restrictions on the Ring Protocol was added to Interoperability of
Layer 2 switching and other functionality.
MAC Address Learning Adescription about clearing the MAC address table was added.
Extended VLAN Functionality Notes on CFM usage were added to Notes on using the inter-port
relay blocking functionality.
Description of the Ring Protocol This chapter was added.
Settings and Operation for Ring
Protocol This chapter was added.
Using the Ring Protocol with
Spanning Tree Protocols/GSRP This chapter was added.
IPv4 interface A description about duplicate IP detection was added.
In addition to the above changes, minor editorial corrections were made.
For version 2.1 (Edition 2)
Summary of amendments
Location and title Changes
Capacity Limit Capacity limits for authentication-only RADIUS servers were added
to IEEE 802.1X, Web authentication, and MAC authentication.
Login Procedures A diagram showing the workflow from starting up to stopping the
Switch was changed.
Remote Login ftp was added to the list of operation commands.

Location and title Changes
Login Security and RADIUS Due to the addition of authentication RADIUS server information,
descriptions about selecting RADIUS servers and restoring RADIUS
servers were moved to Chapter 5. Overview of Layer 2
Authentication in the Configuration Guide Vol. 2.
Device Management show cpu and show memory summary were added to the list of
operation commands (resource information check).
Power Saving Functionality A description of automatic LED operation was added.
A description about port power saving was added.
A description of Switch sleep was added.
A description of cooling fan control was added.
Scheduling of power saving functionality was added.
Layer 2 Switching Overview A description about link aggregation was deleted from Restrictions
on IGMP and MLD snooping in Interoperability of Layer 2 switching
and other functionality.
MAC Address Learning Notes on the aging time when using Layer 2 authentication
functionality were added.
VLAN A description about automatic VLAN allocation to MAC ports during
linkage with Layer 2 authentication was added to the notes in
Descriptions of MAC VLANs.
Extended VLAN Functionality Notes on the usage of DHCP snooping and IGMP/MLD snooping
were added to Notes on using the inter-port relay blocking
functionality.
In addition to the above changes, minor editorial corrections were made.

I
Preface
Applicable products and software versions
This manual applies to the AX2200S, AX1250S, and AX1240S models of switches. The
manual describes the functionality in version 2.4 of the software for the AX2200S,
AX1250S, and AX1240S series switches that are supported by the software OS-LT4,
OS-LT3 and OS-LT2, and by optional licenses.
Before you operate the equipment, carefully read the manual and make sure that you
understand all instructions and cautionary notes. After reading the manual, keep it in a
convenient place for easy reference.
Unless otherwise noted, this manual describes the functions applicable to the AX2200S,
AX1250S, and AX1240S. Model-specific functions are indicated as follows:
[AX2200S]:
The information following this label applies only to the AX2200S series.
[AX1250S]:
The description applies to AX1250S series switches.
[AX1240S]:
The description applies to AX1240S series switches.
Unless otherwise noted, this manual describes the functions of the OS-LT4, OS-LT3 and
OS-LT2 software. The functions of software supported by optional licenses are indicated as
follows:
[OP-WOL]:
The description applies to the OP-WOL optional license.
[OP-OTP]:
The description applies to the OP-OTP optional license.
Corrections to the manual
Corrections to this manual might be contained in the Release Notes and Manual
Corrections that come with the software.
Intended readers
This manual is intended for system administrators who wish to configure and operate a
network system that uses the Switch.
Readers must have an understanding of the following:
The basics of network system management
Manual URL
You can view this manual on our website at:
http://www.alaxala.com/en/
Reading sequence of the manuals
The following shows the manuals you need to consult according to your requirements
determined from the following workflow for installing, setting up, and starting regular
operation of the Switch.

Preface
II
Abbreviations used in the manual
AC Alternating Current
ACK ACKnowledge
ADSL Asymmetric Digital Subscriber Line
ALG Application Level Gateway
ANSI American National Standards Institute
ARP Address Resolution Protocol
AS Autonomous System
AUX Auxiliary
BGP Border Gateway Protocol
BGP4 Border Gateway Protocol - version 4
BGP4+ Multiprotocol Extensions for Border Gateway Protocol - version 4
bit/s Bits per second (can also appear as bps)
BPDU Bridge Protocol Data Unit
BRI Basic Rate Interface
CC Continuity Check
CDP Cisco Discovery Protocol
CFM Connectivity Fault Management

Preface
III
CIDR Classless Inter-Domain Routing
CIR Committed Information Rate
CIST Common and Internal Spanning Tree
CLNP ConnectionLess Network Protocol
CLNS ConnectionLess Network System
CONS Connection Oriented Network System
CRC Cyclic Redundancy Check
CSMA/CD Carrier Sense Multiple Access with Collision Detection
CSNP Complete Sequence Numbers PDU
CST Common Spanning Tree
DA Destination Address
DC Direct Current
DCE Data Circuit terminating Equipment
DHCP Dynamic Host Configuration Protocol
DIS Draft International Standard/Designated Intermediate System
DNS Domain Name System
DR Designated Router
DSAP Destination Service Access Point
DSCP Differentiated Services Code Point
DTE Data Terminal Equipment
DVMRP Distance Vector Multicast Routing Protocol
E-Mail Electronic Mail
EAP Extensible Authentication Protocol
EAPOL EAP Over LAN
EFM Ethernet in the First Mile
ES End System
FAN Fan Unit
FCS Frame Check Sequence
FDB Filtering DataBase
FQDN Fully Qualified Domain Name
FTTH Fiber To The Home
GBIC GigaBit Interface Converter
GSRP Gigabit Switch Redundancy Protocol
HMAC Keyed-Hashing for Message Authentication
IANA Internet Assigned Numbers Authority
ICMP Internet Control Message Protocol
ICMPv6 Internet Control Message Protocol version 6
ID Identifier
IEC International Electrotechnical Commission
IEEE Institute of Electrical and Electronics Engineers, Inc.
IETF the Internet Engineering Task Force
IGMP Internet Group Management Protocol
IP Internet Protocol
IPCP IP Control Protocol
IPv4 Internet Protocol version 4
IPv6 Internet Protocol version 6
IPV6CP IP Version 6 Control Protocol
IPX Internetwork Packet Exchange
ISO International Organization for Standardization
ISP Internet Service Provider
IST Internal Spanning Tree
L2LD Layer 2 Loop Detection
LAN Local Area Network
LCP Link Control Protocol
LED Light Emitting Diode
LLC Logical Link Control
LLDP Link Layer Discovery Protocol
LLQ+3WFQ Low Latency Queueing + 3 Weighted Fair Queueing
LSP Label Switched Path
LSP Link State PDU
LSR Label Switched Router
MA Maintenance Association
MAC Media Access Control

Preface
IV
MC Memory Card
MD5 Message Digest 5
MDI Medium Dependent Interface
MDI-X Medium Dependent Interface crossover
MEP Maintenance association End Point
MIB Management Information Base
MIP Maintenance domain Intermediate Point
MRU Maximum Receive Unit
MSTI Multiple Spanning Tree Instance
MSTP Multiple Spanning Tree Protocol
MTU Maximum Transfer Unit
NAK Not AcKnowledge
NAS Network Access Server
NAT Network Address Translation
NCP Network Control Protocol
NDP Neighbor Discovery Protocol
NET Network Entity Title
NLA ID Next-Level Aggregation Identifier
NPDU Network Protocol Data Unit
NSAP Network Service Access Point
NSSA Not So Stubby Area
NTP Network Time Protocol
OADP Octpower Auto Discovery Protocol
OAM Operations, Administration, and Maintenance
OSPF Open Shortest Path First
OUI Organizationally Unique Identifier
packet/s packets per second (can also appear as pps)
PAD PADding
PAE Port Access Entity
PC Personal Computer
PCI Protocol Control Information
PDU Protocol Data Unit
PICS Protocol Implementation Conformance Statement
PID Protocol IDentifier
PIM Protocol Independent Multicast
PIM-DM Protocol Independent Multicast-Dense Mode
PIM-SM Protocol Independent Multicast-Sparse Mode
PIM-SSM Protocol Independent Multicast-Source Specific Multicast
PoE Power over Ethernet
PRI Primary Rate Interface
PS Power Supply
PSNP Partial Sequence Numbers PDU
QoS Quality of Service
RA Router Advertisement
RADIUS Remote Authentication Dial In User Service
RDI Remote Defect Indication
REJ REJect
RFC Request For Comments
RIP Routing Information Protocol
RIPng Routing Information Protocol next generation
RMON Remote Network Monitoring MIB
RPF Reverse Path Forwarding
RQ ReQuest
RSTP Rapid Spanning Tree Protocol
SA Source Address
SD Secure Digital
SDH Synchronous Digital Hierarchy
SDU Service Data Unit
SEL NSAP SELector
SFD Start Frame Delimiter
SFP Small Form factor Pluggable
SMTP Simple Mail Transfer Protocol
SNAP Sub-Network Access Protocol

Preface
V
SNMP Simple Network Management Protocol
SNP Sequence Numbers PDU
SNPA Subnetwork Point of Attachment
SPF Shortest Path First
SSAP Source Service Access Point
STP Spanning Tree Protocol
TA Terminal Adapter
TACACS+ Terminal Access Controller Access Control System Plus
TCP/IP Transmission Control Protocol/Internet Protocol
TLA ID Top-Level Aggregation Identifier
TLV Type, Length, and Value
TOS Type Of Service
TPID Tag Protocol Identifier
TTL Time To Live
UDLD Uni-Directional Link Detection
UDP User Datagram Protocol
ULR Uplink Redundant
UPC Usage Parameter Control
UPC-RED Usage Parameter Control - Random Early Detection
VAA VLAN Access Agent
VLAN Virtual LAN
VRRP Virtual Router Redundancy Protocol
WAN Wide Area Network
WDM Wavelength Division Multiplexing
WFQ Weighted Fair Queueing
WRED Weighted Random Early Detection
WS Work Station
WWW World-Wide Web
XFP 10 gigabit small Form factor Pluggable
Conventions: KB, MB, GB, and TB
This manual uses the following conventions: 1 KB (kilobyte) is 1024 bytes. 1 MB
(megabyte) is 10242bytes. 1 GB (gigabyte) is 10243bytes. 1 TB (terabyte) is 10244bytes.
Conventions: The terms "Switch" and "switch"
The term Switch (upper-case "S") is an abbreviation for any or all of the following models:
AX2200S series switch
AX1250S series switch
AX1240S series switch
The term switch (lower-case "s") might refer to a Switch, another type of switch from the
current vendor, or a switch from another vendor. The context decides the meaning.

Preface
VI

i
Contents
Preface..............................................................................................................................................I
Part 1: Overview and Capacity Limits of the Switch....................................................................1
1. Overview of the Switch...............................................................................................................1
1.1 Overview of the Switch......................................................................................................2
1.2 Features of the Switch ......................................................................................................3
2. Switch Configuration..................................................................................................................7
2.1 Range of Switch models ...................................................................................................8
2.1.1 External view........................................................................................................9
2.2 Switch components...........................................................................................................12
2.2.1 Hardware..............................................................................................................12
2.2.2 Software...............................................................................................................17
3. Capacity Limit..............................................................................................................................19
3.1 Line and module capacities...............................................................................................20
3.1.1 Maximum number of lines....................................................................................20
3.1.2 Installed memory..................................................................................................21
3.2 Capacity limits ...................................................................................................................22
Part 2: Operation Management ......................................................................................................39
4. Login Procedures .......................................................................................................................39
4.1 Terminal-based management............................................................................................40
4.1.1 Operation terminals..............................................................................................40
4.1.2 Connection characteristics...................................................................................41
4.1.3 Overview of operation management functionality................................................42
4.2 Starting the switch.............................................................................................................43
4.2.1 Workflow from starting to stopping the Switch.....................................................43
4.2.2 Starting a switch...................................................................................................44
4.2.3 Stop procedure.....................................................................................................44
4.3 Login and logout................................................................................................................45
5. Command Operations ................................................................................................................47
5.1 Command input mode.......................................................................................................48
5.1.1 List of operation commands.................................................................................48
5.1.2 Command input mode..........................................................................................48
5.2 CLI operations...................................................................................................................50
5.2.1 Entry completion ..................................................................................................50
5.2.2 Help......................................................................................................................50
5.2.3 Entry-error detection functionality........................................................................51
5.2.4 Abbreviated-command execution ........................................................................51
5.2.5 History functionality..............................................................................................52
5.2.6 Paging..................................................................................................................53
5.2.7 Keyboard command functionality.........................................................................53
5.3 Notes on CLI operation .....................................................................................................55
6. Configuration ..............................................................................................................................61
6.1 Configuration.....................................................................................................................62
6.1.1 Configuration at startup........................................................................................62
6.1.2 Configuration during operation ............................................................................62
6.2 Overview of editing a running configuration......................................................................63
6.3 Mode transitions when entering configuration commands................................................64
6.4 Configuration editing procedures......................................................................................66
6.4.1 Lists of configuration commands and operation commands ...............................66
6.4.2 Starting configuration editing (configure command and configure terminal command)
............................................................................................................................67
6.4.3 Displaying and checking configuration entries (show command)........................67

Contents
ii
6.4.4 Adding, changing, and deleting configuration entries..........................................69
6.4.5 Saving to the configuration file.............................................................................70
6.4.6 Ending configuration editing (exit command).......................................................71
6.4.7 Notes on configuration editing .............................................................................71
6.5 Configuration operations...................................................................................................72
6.5.1 Transferring files using FTP.................................................................................72
6.5.2 Transferring files using a memory card................................................................73
6.5.3 Notes on applying a backup configuration file.....................................................74
7. Remote Login..............................................................................................................................75
7.1 Description ........................................................................................................................76
7.2 Configuration.....................................................................................................................77
7.2.1 List of configuration commands...........................................................................77
7.2.2 Assigning an IP address to the Switch.................................................................77
7.2.3 Permitting login by using the Telnet protocol.......................................................78
7.2.4 Permitting login by using FTP..............................................................................78
7.3 Operation...........................................................................................................................79
7.3.1 List of operation commands.................................................................................79
7.3.2 Verifying communication between a remote terminal and the Switch .................79
8. Login Security and RADIUS.......................................................................................................81
8.1 Setting login security.........................................................................................................82
8.1.1 Lists of configuration commands and operation commands ...............................82
8.1.2 Overview of login control......................................................................................82
8.1.3 Changing the login user.......................................................................................83
8.1.4 Setting the password for switching to administrator mode ..................................83
8.1.5 Permitting login from a remote operation terminal...............................................83
8.1.6 Setting the maximum number of concurrent users..............................................84
8.1.7 Restricting login from remote operation terminals...............................................84
8.2 Description of RADIUS......................................................................................................86
8.2.1 Overview of RADIUS ...........................................................................................86
8.2.2 Application functionality and scope of RADIUS authentication............................86
8.2.3 Authentication using RADIUS..............................................................................88
8.2.4 Connecting to RADIUS servers ...........................................................................91
8.3 Configuring RADIUS .........................................................................................................93
8.3.1 List of configuration commands...........................................................................93
8.3.2 Setting authentication methods ...........................................................................93
8.3.3 Configuring a RADIUS server group....................................................................95
8.4 RADIUS operations...........................................................................................................97
8.4.1 List of operation commands.................................................................................97
8.4.2 Displaying the effective RADIUS server information ...........................................97
9. Time Settings and NTP...............................................................................................................99
9.1 Setting and checking the time...........................................................................................100
9.1.1 Supported specifications......................................................................................100
9.1.2 Notes on changing the time.................................................................................102
9.2 Configuration.....................................................................................................................103
9.2.1 List of configuration commands...........................................................................103
9.2.2 Setting the system clock......................................................................................103
9.2.3 Regularly obtaining time information from the NTP server..................................104
9.3 Operation...........................................................................................................................105
9.3.1 List of operation commands.................................................................................105
9.3.2 Checking the time................................................................................................105
9.3.3 Displaying the NTP client information..................................................................105
10. Device Management.................................................................................................................107
10.1 Settings related to status display and system operation.................................................108
10.1.1 Lists of configuration commands and operation commands .............................108
10.1.2 Checking the software version...........................................................................109

Contents
iii
10.1.3 Checking the switch status ................................................................................110
10.1.4 Displaying and stopping display of the operation log on the monitor ................112
10.1.5 Viewing logged data...........................................................................................112
10.1.6 Functions that use system function resources [AX1250S] [AX1240S]..............112
10.2 Backing up and restoring device information..................................................................113
10.2.1 List of operation commands...............................................................................113
10.2.2 Target information to be backed up and restored..............................................113
10.3 Compatibility between AX2200S and AX1200S series switches ....................................115
10.3.1 Compatibility between AX2200S and AX1200S series switches.......................115
10.3.2 Compatibility of input commands between AX1250S/AX1240S series switches and
AX1230S series switches...................................................................................115
10.3.3 Compatibility of device information between AX1250S series switches and
AX1240S series switches...................................................................................117
10.3.4 Compatibility of device information between AX1250S/AX1240S series switches
and AX1230S series switches ............................................................................118
10.4 Failure recovery...............................................................................................................121
10.4.1 Error locations and recovery processing ...........................................................121
11. Power Saving Functionality ....................................................................................................123
11.1 Description of the power saving functionality..................................................................124
11.1.1 Supported functionality.......................................................................................124
11.1.2 LED behavior......................................................................................................125
11.1.3 Port power saving ..............................................................................................132
11.1.4 Sleep mode [AX1250S] [AX1240S] ...................................................................133
11.1.5 Cooling fan control (Semi-fanless operation) [AX1240S] ..................................134
11.1.6 Power saving scheduling ...................................................................................134
11.1.7 Notes when the power saving functionality is used ...........................................141
11.2 Power control configuration.............................................................................................143
11.2.1 List of configuration commands .........................................................................143
11.2.2 LED behavior setting..........................................................................................144
11.2.3 Setting power saving for ports in link-down status.............................................144
11.2.4 Setting cooling fan control (Semi-fanless operation) [AX1240S].......................144
11.2.5 Setting power saving based on scheduling........................................................145
11.3 Power control operation...................................................................................................147
11.3.1 List of operation commands...............................................................................147
11.3.2 Displaying the LED behavior..............................................................................147
11.3.3 Displaying the status of port power saving control.............................................147
11.3.4 Displaying the status of cooling fan control [AX1240S] .....................................147
11.3.5 Displaying the operating status of the schedule ................................................148
12. Software Management .............................................................................................................149
12.1 List of operation commands............................................................................................150
12.2 Software update ..............................................................................................................151
12.2.1 Notes on updating the software.........................................................................151
Part 3: Network Interfaces..............................................................................................................153
13. Ethernet.....................................................................................................................................153
13.1 Information common to all Ethernet interfaces ...............................................................154
13.1.1 Network configuration example .........................................................................154
13.1.2 Physical interfaces.............................................................................................154
13.1.3 Control on the MAC and LLC sublayers............................................................155
13.1.4 MAC address of the Switch................................................................................156
13.1.5 Order of Ethernet frames...................................................................................157
13.2 Configuration common to all Ethernet interfaces............................................................159
13.2.1 List of configuration commands.........................................................................159
13.2.2 Setting Ethernet interface ports [AX2200S].......................................................160
13.2.3 Setting Ethernet interface ports [AX1250S] [AX1240S].....................................160
13.2.4 Configuring multiple ports at one time...............................................................160

Contents
iv
13.2.5 Shutting down a port..........................................................................................161
13.2.6 Setting the link-down detection timer.................................................................161
13.2.7 Flow control settings ..........................................................................................162
13.2.8 Automatic MDIX functionality settings................................................................162
13.2.9 Using jumbo frames...........................................................................................163
13.3 Operations common to all Ethernet interfaces................................................................165
13.3.1 List of operation commands...............................................................................165
13.3.2 Checking the Ethernet operating status.............................................................165
13.4 Description of Fastethernet [AX1250S] [AX1240S] ........................................................166
13.4.1 Functionality.......................................................................................................166
13.5 Configuration of Fastethernet [AX1250S] [AX1240S].....................................................172
13.5.1 Configuring ports................................................................................................172
13.5.2 Flow control settings ..........................................................................................173
13.5.3 Automatic MDIX functionality settings................................................................173
13.5.4 Using jumbo frames...........................................................................................173
13.6 Description of Gigabitethernet (RJ45).............................................................................174
13.6.1 Functionality.......................................................................................................174
13.6.2 Automatic SFP recognition (selection of media type) [AX1250S] [AX1240S] ...182
13.7 Configuration of Gigabitethernet (RJ45) .........................................................................183
13.7.1 Configuring ports................................................................................................183
13.7.2 Flow control settings ..........................................................................................184
13.7.3 Automatic MDIX functionality settings................................................................184
13.7.4 Using jumbo frames...........................................................................................184
13.7.5 Setting the media type [AX1250S] [AX1240S]...................................................184
13.8 Description of Gigabitethernet (SFP)..............................................................................186
13.8.1 Functionality.......................................................................................................186
13.8.2 Notes on using SFP...........................................................................................193
13.9 Configuration of Gigabitethernet (SFP)...........................................................................195
13.9.1 Setting 100BASE-FX ports [AX1250S]..............................................................195
13.9.2 Setting a 1000BASE-X port ...............................................................................195
13.9.3 Flow control settings ..........................................................................................196
13.9.4 Using jumbo frames...........................................................................................196
13.9.5 Setting the media type [AX1250S] [AX1240S]...................................................196
13.10 Description of PoE [AX2200S] [AX1240S]....................................................................197
13.10.1 Overview of PoE ..............................................................................................197
13.10.2 Allocating the power supplied by PoE [AX2200S] ...........................................197
13.10.3 Allocating power supplied by PoE [AX1240S] .................................................200
13.10.4 Setting behavior of when the maximum power supply is exceeded................201
13.10.5 Resuming and stopping power supply, and the port status.............................204
13.10.6 Notes on PoE usage........................................................................................207
13.11 Configuration of PoE [AX2200S] [AX1240S].................................................................209
13.11.1 List of configuration commands .......................................................................209
13.11.2 Setting the maximum amount of power that can be supplied for system 1
[AX2200S]...........................................................................................................209
13.11.3 Setting port priority...........................................................................................210
13.11.4 Setting so that priority is given to powered ports.............................................210
13.11.5 Allocating power that can be supplied to each port .........................................211
13.12 Operation of PoE [AX2200S] [AX1240S]......................................................................212
13.12.1 Checking the PoE power supply status ...........................................................212
14. Link Aggregation......................................................................................................................215
14.1 Description of the basic link aggregation functionality....................................................216
14.1.1 Overview............................................................................................................216
14.1.2 Link aggregation configuration...........................................................................216
14.1.3 Supported specifications....................................................................................216
14.1.4 MAC address of the channel group ...................................................................217
14.1.5 Port allocation for sending frames.....................................................................217
14.1.6 Notes on using link aggregation ........................................................................217

Contents
v
14.2 Configuration of the basic link aggregation functionality.................................................219
14.2.1 List of configuration commands.........................................................................219
14.2.2 Configuring static link aggregation.....................................................................219
14.2.3 Configuration of LACP link aggregation.............................................................220
14.2.4 Configuration of a port channel interface...........................................................221
14.2.5 Deleting a channel group...................................................................................224
14.3 Description of the link aggregation extended functionality..............................................226
14.3.1 Standby link functionality....................................................................................226
14.4 Configuration of the link aggregation extended functionality ..........................................228
14.4.1 List of configuration commands.........................................................................228
14.4.2 Configuration of the standby link functionality ...................................................228
14.5 Operation for link aggregation.........................................................................................230
14.5.1 List of operation commands...............................................................................230
14.5.2 Displaying link aggregation information.............................................................230
Part 4: Layer 2 Switching................................................................................................................233
15. Layer 2 Switching Overview....................................................................................................233
15.1 Overview .........................................................................................................................234
15.1.1 MAC address learning .......................................................................................234
15.1.2 VLAN..................................................................................................................234
15.2 Supported functions ........................................................................................................235
15.3 Compatibility between Layer 2 switch functionality and other functionality ....................236
16. MAC Address Learning............................................................................................................241
16.1 Description of MAC address learning..............................................................................242
16.1.1 Source MAC address learning...........................................................................242
16.1.2 Aging and MAC address learning ......................................................................242
16.1.3 Layer 2 switching by MAC address ...................................................................242
16.1.4 Registering static entries....................................................................................242
16.1.5 Clearing the MAC address table........................................................................243
16.1.6 Notes..................................................................................................................244
16.2 MAC address learning configuration...............................................................................246
16.2.1 List of configuration commands.........................................................................246
16.2.2 Setting the aging time........................................................................................246
16.2.3 Configuring static entries ...................................................................................246
16.3 MAC address learning operation.....................................................................................248
16.3.1 List of operation commands...............................................................................248
16.3.2 Checking the status of MAC address learning...................................................248
16.3.3 Checking the MAC address learning count .......................................................248
17. VLANs........................................................................................................................................251
17.1 Description of the basic VLAN functionality....................................................................252
17.1.1 VLAN type..........................................................................................................252
17.1.2 Port type.............................................................................................................252
17.1.3 Default VLAN .....................................................................................................253
17.1.4 VLAN priority......................................................................................................253
17.1.5 VLAN tags..........................................................................................................255
17.1.6 Notes on VLAN usage .......................................................................................257
17.2 Configuration of the basic VLAN functionality.................................................................258
17.2.1 List of configuration commands.........................................................................258
17.2.2 Configuring VLANs ............................................................................................258
17.2.3 Configuring ports................................................................................................259
17.2.4 Setting trunk ports..............................................................................................259
17.3 Description of port VLANs...............................................................................................261
17.3.1 Access ports and trunk ports..............................................................................261
17.3.2 Native VLANs.....................................................................................................261
17.3.3 Notes on regarding port VLAN usage................................................................261
17.4 Configuring port VLANs ..................................................................................................262

Contents
vi
17.4.1 List of configuration commands.........................................................................262
17.4.2 Configuring a port VLAN....................................................................................262
17.4.3 Configuring native VLANs for trunk ports ..........................................................263
17.5 Description of protocol VLANs........................................................................................265
17.5.1 Overview............................................................................................................265
17.5.2 Distinguishing protocols.....................................................................................265
17.5.3 Protocol ports and trunk ports............................................................................266
17.5.4 Native VLANs for protocol ports.........................................................................266
17.6 Configuration of protocol VLANs.....................................................................................267
17.6.1 List of configuration commands.........................................................................267
17.6.2 Creating protocol VLANs ...................................................................................267
17.6.3 Configuring native VLAN for protocol ports .......................................................269
17.7 Description of MAC VLANs.............................................................................................271
17.7.1 Overview............................................................................................................271
17.7.2 Connections between switches and MAC address settings..............................271
17.7.3 Linkage with the Layer 2 authentication functionality ........................................272
17.7.4 Optional functionality of MAC ports ...................................................................273
17.8 Configuration of MAC VLANs..........................................................................................275
17.8.1 List of configuration commands.........................................................................275
17.8.2 Configuring MAC VLANs ...................................................................................275
17.8.3 Configuring native VLANs for MAC ports ..........................................................278
17.8.4 Setting forwarding of tagged frames on a MAC port..........................................278
17.9 VLAN operation...............................................................................................................281
17.9.1 List of operation commands...............................................................................281
17.9.2 Checking VLAN status.......................................................................................281
18. Extended VLAN Functionality.................................................................................................285
18.1 Description of L2 protocol frame transparency functionality...........................................286
18.1.1 Overview............................................................................................................286
18.2 Configuring the L2 protocol frame transparency functionality.........................................287
18.2.1 List of configuration commands.........................................................................287
18.2.2 Configuring the L2 protocol frame transparency functionality ...........................287
18.3 Description of the inter-port relay blocking functionality..................................................288
18.3.1 Overview............................................................................................................288
18.3.2 Notes on using the inter-port relay blocking functionality ..................................288
18.4 Configuration of the inter-port relay blocking functionality..............................................290
18.4.1 List of configuration commands.........................................................................290
18.4.2 Configuring the inter-port relay blocking functionality........................................290
18.4.3 Changing blocked ports.....................................................................................291
18.5 Operation for the VLAN extended functionality...............................................................292
18.5.1 List of operation commands...............................................................................292
18.5.2 Checking VLAN extended functionality..............................................................292
19. Spanning Tree Protocol ...........................................................................................................295
19.1 Overview of Spanning Tree Protocols.............................................................................296
19.1.1 Overview............................................................................................................296
19.1.2 Types of Spanning Tree Protocols.....................................................................296
19.1.3 Spanning Tree Protocols and rapid Spanning Tree Protocols ...........................297
19.1.4 Configuration components for Spanning Tree topologies..................................299
19.1.5 Designing Spanning Tree topologies .................................................................300
19.1.6 STP compatibility mode .....................................................................................301
19.1.7 Notes common to Spanning Tree Protocols ......................................................303
19.2 Configuration of the Spanning Tree operating mode ......................................................304
19.2.1 List of configuration commands.........................................................................304
19.2.2 Configuring the operating mode ........................................................................304
19.3 Description of PVST+......................................................................................................307
19.3.1 Using PVST+ to balance load............................................................................307
19.3.2 PVST+ for access ports.....................................................................................307

Contents
vii
19.3.3 Notes on PVST+ usage .....................................................................................309
19.4 PVST+ configuration.......................................................................................................310
19.4.1 List of configuration commands.........................................................................310
19.4.2 Configuring PVST+............................................................................................310
19.4.3 Configuring PVST+ topologies...........................................................................311
19.4.4 Configuring PVST+ parameters.........................................................................312
19.5 PVST+ operation.............................................................................................................315
19.5.1 List of operation commands...............................................................................315
19.5.2 Checking PVST+ statuses.................................................................................315
19.6 Description of Single Spanning Tree...............................................................................316
19.6.1 Overview............................................................................................................316
19.6.2 Usage with PVST+.............................................................................................316
19.6.3 Notes on Single Spanning Tree usage ..............................................................317
19.7 Configuration of Single Spanning Tree............................................................................318
19.7.1 List of configuration commands.........................................................................318
19.7.2 Configuring Single Spanning Tree .....................................................................318
19.7.3 Configuring topologies for Single Spanning Tree...............................................319
19.7.4 Configuring Single Spanning Tree parameters..................................................320
19.8 Operation for Single Spanning Tree................................................................................323
19.8.1 List of operation commands...............................................................................323
19.8.2 Checking the Single Spanning Tree status........................................................323
19.9 Description of Multiple Spanning Tree.............................................................................325
19.9.1 Overview............................................................................................................325
19.9.2 Designing networks for Multiple Spanning Tree.................................................327
19.9.3 Compatibility with other Spanning Tree Protocols .............................................329
19.9.4 Notes on Multiple Spanning Tree usage............................................................330
19.10 Configuration of Multiple Spanning Tree.......................................................................331
19.10.1 List of configuration commands.......................................................................331
19.10.2 Configuring Multiple Spanning Tree.................................................................331
19.10.3 Configuring topologies for Multiple Spanning Tree..........................................332
19.10.4 Configuring Multiple Spanning Tree parameters..............................................334
19.11 Operation for Multiple Spanning Tree............................................................................337
19.11.1 List of operation commands.............................................................................337
19.11.2 Checking the Multiple Spanning Tree status....................................................337
19.12 Description of common Spanning Tree functionality.....................................................339
19.12.1 PortFast............................................................................................................339
19.12.2 BPDU filter .......................................................................................................340
19.12.3 Loop guard.......................................................................................................340
19.12.4 Root guard .......................................................................................................343
19.13 Configuration of the common Spanning Tree functionality ...........................................345
19.13.1 List of configuration commands.......................................................................345
19.13.2 Setting PortFast ...............................................................................................345
19.13.3 Setting BPDU filters.........................................................................................346
19.13.4 Configuring loop guards...................................................................................347
19.13.5 Setting root guards...........................................................................................347
19.13.6 Configuring link types.......................................................................................348
19.14 Operation for common Spanning Tree functionality......................................................349
19.14.1 List of operation commands.............................................................................349
19.14.2 Checking the status of common Spanning Tree functionality..........................349
20. Description of the Ring Protocol............................................................................................351
20.1 Overview of the Ring Protocol.........................................................................................352
20.1.1 Overview............................................................................................................352
20.1.2 Features.............................................................................................................353
20.1.3 Supported specifications....................................................................................355
20.2 Basic Ring Protocol principles.........................................................................................356
20.2.1 Network configuration........................................................................................356
20.2.2 Control VLAN.....................................................................................................357

Contents
viii
20.2.3 Fault monitoring methods ..................................................................................358
20.2.4 Switching communication paths.........................................................................358
20.3 Overview of single ring operation....................................................................................359
20.3.1 Normal ring operation ........................................................................................359
20.3.2 Operation when a fault is detected ....................................................................359
20.3.3 Operation when recovery is detected ................................................................361
20.4 Overview of multi-ring operation .....................................................................................363
20.4.1 Normal ring operation ........................................................................................363
20.4.2 Operation for shared link faults and restoration.................................................365
20.4.3 Operation for faults and restoration other than for shared links in a shared link
non-monitoring ring.............................................................................................367
20.4.4 Faults and restoration other than for shared links in a shared link monitoring ring
............................................................................................................................369
20.5 Multi-fault monitoring functionality for the Ring Protocol.................................................372
20.5.1 Overview............................................................................................................372
20.5.2 Basic configuration for the multi-fault monitoring functionality...........................373
20.5.3 Overview of operation for multi-fault monitoring................................................373
20.5.4 Operation when multi-faults occur .....................................................................374
20.5.5 Operation during multi-fault recovery.................................................................377
20.6 Ring Protocol network design .........................................................................................380
20.6.1 Using VLAN mappings.......................................................................................380
20.6.2 Using forwarding-delay-time for control VLANs.................................................380
20.6.3 Prohibited Ring Protocol configurations.............................................................381
20.6.4 Prohibited configurations for the multi-fault monitoring functionality .................381
20.7 Notes on Ring Protocol usage ........................................................................................382
21. Settings and Operation for the Ring Protocol.......................................................................385
21.1 Configuration...................................................................................................................386
21.1.1 List of configuration commands.........................................................................386
21.1.2 Flow of Ring Protocol settings ...........................................................................386
21.1.3 Configuring ring IDs...........................................................................................387
21.1.4 Setting control VLANs........................................................................................387
21.1.5 Setting VLAN mappings.....................................................................................388
21.1.6 Configuring a VLAN group.................................................................................389
21.1.7 Settings for modes and ring ports (for single rings and multi-ring configurations
without shared links)...........................................................................................389
21.1.8 Configuring modes and ring ports (for multi-ring configurations with shared links)
............................................................................................................................390
21.1.9 Setting various parameters................................................................................393
21.1.10 Setting the multi-fault monitoring functionality.................................................393
21.2 Operation.........................................................................................................................395
21.2.1 List of operation commands...............................................................................395
21.2.2 Checking Ring Protocol statuses.......................................................................395
22. Using the Ring Protocol with Spanning Tree Protocols/GSRP ...........................................397
22.1 Using the Ring Protocol with Spanning Tree Protocols...................................................398
22.1.1 Overview............................................................................................................398
22.2 Using the Ring Protocol with GSRP................................................................................400
22.2.1 Operational overview.........................................................................................400
23. DHCP Snooping........................................................................................................................403
23.1 Description of the DHCP snooping functionality .............................................................404
23.1.1 Monitoring DHCP packets..................................................................................406
23.1.2 Terminal filtering.................................................................................................409
23.1.3 Forwarding DHCP packets with Option 82 ........................................................411
23.1.4 Limiting the rate of DHCP packet reception.......................................................411
23.1.5 Dynamic ARP inspection functionality ...............................................................412
23.1.6 Saving a binding database.................................................................................415
23.1.7 Notes on using DHCP snooping........................................................................417