Cisco ME 3400 Series User manual

Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: [phone]
800 553-NETS (6387)
Fax: [phone]
Cisco ME 3400 Ethernet Access Switch
Software Configuration Guide
Cisco IOS Release 12.2(50)SE
March 2009
Text Part Number: OL-9639-07

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL
STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT
WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT
SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE
OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.
The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public
domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH
ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT
LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF
DEALING, USAGE, OR TRADE PRACTICE.
IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING,
WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO
OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
CCDE, CCENT, Cisco Eos, Cisco HealthPresence, the Cisco logo, Cisco Lumin, Cisco Nexus, Cisco StadiumVision, Cisco TelePresence, Cisco WebEx, DCE, and Welcome
to the Human Network are trademarks; Changing the Way We Work, Live, Play, and Learn and Cisco Store are service marks; and Access Registrar, Aironet, AsyncOS,
Bringing the Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS,
Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Collaboration Without Limitation, EtherFast, EtherSwitch, Event Center, Fast Step,
Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, iQuick Study, IronPort, the IronPort logo, LightStream, Linksys, MediaTone,
MeetingPlace, MeetingPlace Chime Sound, MGX, Networkers, Networking Academy, Network Registrar, PCNow, PIX, PowerPanels, ProConnect, ScriptShare, SenderBase,
SMARTnet, Spectrum Expert, StackWise, The Fastest Way to Increase Your Internet Quotient, TransPath, WebEx, and the WebEx logo are registered trademarks of
Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
All other trademarks mentioned in this document or website are the property of their respective owners. The use of the word partner does not imply a partnership relationship
between Cisco and any other company. (0812R)
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
© 2006-2009 Cisco Systems, Inc. All rights reserved.

iii
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
CONTENTS
Preface xli
Audience xli
Purpose xli
Conventions xlii
Related Publications xlii
Obtaining Documentation and Submitting a Service Request xliii
CHAPTER 1Overview 1-1
Features 1-1
Performance Features 1-2
Management Options 1-3
Manageability Features 1-3
Availability Features 1-5
VLAN Features 1-6
Security Features 1-6
Subscriber Security 1-6
Switch Security 1-7
Network Security 1-7
Quality of Service and Class of Service Features 1-8
Layer 2 Virtual Private Network Services 1-9
Layer 3 Features 1-9
Layer 3 VPN Services 1-10
Monitoring Features 1-10
Default Settings After Initial Switch Configuration 1-11
Network Configuration Examples 1-14
Multidwelling or Ethernet-to-the-Subscriber Network 1-14
Layer 2 VPN Application 1-15
Multi-VRF CE Application 1-16
Where to Go Next 1-17
CHAPTER 2Using the Command-Line Interface 2-1
Understanding Command Modes 2-1
Understanding the Help System 2-3
Understanding Abbreviated Commands 2-3

Contents
iv
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Understanding no and default Forms of Commands 2-4
Understanding CLI Error Messages 2-4
Using Command History 2-4
Changing the Command History Buffer Size 2-5
Recalling Commands 2-5
Disabling the Command History Feature 2-5
Using Editing Features 2-6
Enabling and Disabling Editing Features 2-6
Editing Commands through Keystrokes 2-6
Editing Command Lines that Wrap 2-8
Searching and Filtering Output of show and more Commands 2-8
Accessing the CLI 2-9
Accessing the CLI through a Console Connection or through Telnet 2-9
CHAPTER 3Assigning the Switch IP Address and Default Gateway 3-1
Understanding the Boot Process 3-1
Assigning Switch Information 3-2
Default Switch Information 3-3
Understanding DHCP-Based Autoconfiguration 3-3
DHCP Client Request Process 3-3
Understanding DHCP-based Autoconfiguration and Image Update 3-4
DHCP Autoconfiguration 3-5
DHCP Auto-Image Update 3-5
Limitations and Restrictions 3-5
Configuring DHCP-Based Autoconfiguration 3-6
DHCP Server Configuration Guidelines 3-6
Configuring the TFTP Server 3-6
Configuring the DNS 3-7
Configuring the Relay Device 3-7
Obtaining Configuration Files 3-8
Example Configuration 3-9
Configuring the DHCP Auto Configuration and Image Update Features 3-10
Configuring DHCP Autoconfiguration (Only Configuration File) 3-11
Configuring DHCP Auto-Image Update (Configuration File and Image) 3-12
Configuring the Client 3-13
Manually Assigning IP Information 3-14
Checking and Saving the Running Configuration 3-14

Contents
v
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Modifying the Startup Configuration 3-16
Default Boot Configuration 3-17
Automatically Downloading a Configuration File 3-17
Specifying the Filename to Read and Write the System Configuration 3-17
Booting Manually 3-18
Booting a Specific Software Image 3-18
Controlling Environment Variables 3-19
Scheduling a Reload of the Software Image 3-21
Configuring a Scheduled Reload 3-21
Displaying Scheduled Reload Information 3-22
CHAPTER 4Configuring Cisco IOS Configuration Engine 4-1
Understanding Cisco Configuration Engine Software 4-1
Configuration Service 4-2
Event Service 4-3
NameSpace Mapper 4-3
What You Should Know About the CNS IDs and Device Hostnames 4-3
ConfigID 4-3
DeviceID 4-4
Hostname and DeviceID 4-4
Using Hostname, DeviceID, and ConfigID 4-4
Understanding Cisco IOS Agents 4-5
Initial Configuration 4-5
Incremental (Partial) Configuration 4-6
Synchronized Configuration 4-6
Configuring Cisco IOS Agents 4-6
Enabling Automated CNS Configuration 4-6
Enabling the CNS Event Agent 4-7
Enabling the Cisco IOS CNS Agent 4-9
Enabling an Initial Configuration 4-9
Enabling a Partial Configuration 4-13
Upgrading Devices with Cisco IOS Image Agent 4-14
Prerequisites for the CNS Image Agent 4-14
Restrictions for the CNS Image Agent 4-14
Displaying CNS Configuration 4-15

Contents
vi
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
CHAPTER 5Administering the Switch 5-1
Managing the System Time and Date 5-1
Understanding the System Clock 5-2
Understanding Network Time Protocol 5-2
Configuring NTP 5-4
Default NTP Configuration 5-4
Configuring NTP Authentication 5-4
Configuring NTP Associations 5-5
Configuring NTP Broadcast Service 5-6
Configuring NTP Access Restrictions 5-8
Configuring the Source IP Address for NTP Packets 5-10
Displaying the NTP Configuration 5-11
Configuring Time and Date Manually 5-11
Setting the System Clock 5-11
Displaying the Time and Date Configuration 5-12
Configuring the Time Zone 5-12
Configuring Summer Time (Daylight Saving Time) 5-13
Configuring a System Name and Prompt 5-14
Default System Name and Prompt Configuration 5-15
Configuring a System Name 5-15
Understanding DNS 5-15
Default DNS Configuration 5-16
Setting Up DNS 5-16
Displaying the DNS Configuration 5-17
Creating a Banner 5-17
Default Banner Configuration 5-17
Configuring a Message-of-the-Day Login Banner 5-18
Configuring a Login Banner 5-19
Suppressing the Power-Supply Alarm on an ME 3400G-12CS Switch 5-19
Managing the MAC Address Table 5-20
Building the Address Table 5-21
MAC Addresses and VLANs 5-21
Default MAC Address Table Configuration 5-22
Changing the Address Aging Time 5-22
Removing Dynamic Address Entries 5-23
Configuring MAC Address Notification Traps 5-23
Adding and Removing Static Address Entries 5-25

Contents
vii
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Configuring Unicast MAC Address Filtering 5-26
Disabling MAC Address Learning on a VLAN 5-27
Displaying Address Table Entries 5-28
Managing the ARP Table 5-29
CHAPTER 6Configuring SDM Templates 6-1
Understanding the SDM Templates 6-1
Dual IPv4 and IPv6 SDM Templates 6-2
Configuring the Switch SDM Template 6-3
Default SDM Template 6-3
SDM Template Configuration Guidelines 6-4
Setting the SDM Template 6-4
Displaying the SDM Templates 6-5
CHAPTER 7Configuring Switch-Based Authentication 7-1
Preventing Unauthorized Access to Your Switch 7-1
Protecting Access to Privileged EXEC Commands 7-2
Default Password and Privilege Level Configuration 7-2
Setting or Changing a Static Enable Password 7-3
Protecting Enable and Enable Secret Passwords with Encryption 7-3
Disabling Password Recovery 7-5
Setting a Telnet Password for a Terminal Line 7-6
Configuring Username and Password Pairs 7-6
Configuring Multiple Privilege Levels 7-7
Setting the Privilege Level for a Command 7-8
Changing the Default Privilege Level for Lines 7-9
Logging into and Exiting a Privilege Level 7-9
Controlling Switch Access with TACACS+ 7-10
Understanding TACACS+ 7-10
TACACS+ Operation 7-12
Configuring TACACS+ 7-12
Default TACACS+ Configuration 7-13
Identifying the TACACS+ Server Host and Setting the Authentication Key 7-13
Configuring TACACS+ Login Authentication 7-14
Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services 7-16
Starting TACACS+ Accounting 7-17
Displaying the TACACS+ Configuration 7-17

Contents
viii
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Controlling Switch Access with RADIUS 7-17
Understanding RADIUS 7-18
RADIUS Operation 7-19
Configuring RADIUS 7-20
Default RADIUS Configuration 7-20
Identifying the RADIUS Server Host 7-20
Configuring RADIUS Login Authentication 7-23
Defining AAA Server Groups 7-25
Configuring RADIUS Authorization for User Privileged Access and Network Services 7-27
Starting RADIUS Accounting 7-28
Configuring Settings for All RADIUS Servers 7-29
Configuring the Switch to Use Vendor-Specific RADIUS Attributes 7-29
Configuring the Switch for Vendor-Proprietary RADIUS Server Communication 7-30
Configuring RADIUS Server Load Balancing 7-31
Displaying the RADIUS Configuration 7-31
Controlling Switch Access with Kerberos 7-32
Understanding Kerberos 7-32
Kerberos Operation 7-34
Authenticating to a Boundary Switch 7-34
Obtaining a TGT from a KDC 7-35
Authenticating to Network Services 7-35
Configuring Kerberos 7-35
Configuring the Switch for Local Authentication and Authorization 7-36
Configuring the Switch for Secure Shell 7-37
Understanding SSH 7-37
SSH Servers, Integrated Clients, and Supported Versions 7-37
Limitations 7-38
Configuring SSH 7-38
Configuration Guidelines 7-38
Setting Up the Switch to Run SSH 7-39
Configuring the SSH Server 7-40
Displaying the SSH Configuration and Status 7-40
Configuring the Switch for Secure Copy Protocol 7-41
Information About Secure Copy 7-41
CHAPTER 8Configuring IEEE 802.1x Port-Based Authentication 8-1
Understanding IEEE 802.1x Port-Based Authentication 8-1
Device Roles 8-2
Authentication Initiation and Message Exchange 8-3

Contents
ix
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Ports in Authorized and Unauthorized States 8-4
IEEE 802.1x Accounting 8-5
IEEE 802.1x Accounting Attribute-Value Pairs 8-5
IEEE 802.1x Host Mode 8-6
Using 802.1x Readiness Check 8-7
Using IEEE 802.1x with Port Security 8-7
Using IEEE 802.1x with VLAN Assignment 8-8
802.1x Switch Supplicant with Network Edge Access Topology (NEAT) 8-9
Configuring IEEE 802.1x Authentication 8-10
Default IEEE 802.1x Configuration 8-11
IEEE 802.1x Configuration Guidelines 8-12
Maximum Number of Allowed Devices Per Port 8-12
Configuring 802.1x Readiness Check 8-13
Configuring IEEE 802.1x Violation Modes 8-14
Configuring IEEE 802.1x Authentication 8-14
Configuring the Switch-to-RADIUS-Server Communication 8-16
Configuring Periodic Re-Authentication 8-17
Manually Re-Authenticating a Client Connected to a Port 8-17
Changing the Quiet Period 8-18
Changing the Switch-to-Client Retransmission Time 8-18
Setting the Switch-to-Client Frame-Retransmission Number 8-19
Setting the Re-Authentication Number 8-20
Configuring the Host Mode 8-20
Resetting the IEEE 802.1x Configuration to the Default Values 8-21
Configuring IEEE 802.1x Accounting 8-21
Configuring 802.1x Switch Supplicant with NEAT 8-22
Displaying IEEE 802.1x Statistics and Status 8-24
CHAPTER 9Configuring Interfaces 9-1
Understanding Interface Types 9-1
UNI, NNI, and ENI Port Types 9-2
Port-Based VLANs 9-2
Switch Ports 9-3
Access Ports 9-4
Trunk Ports 9-4
Tunnel Ports 9-4
Routed Ports 9-5
Switch Virtual Interfaces 9-5
EtherChannel Port Groups 9-6

Contents
x
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Dual-Purpose Ports 9-6
Connecting Interfaces 9-7
Using Interface Configuration Mode 9-8
Procedures for Configuring Interfaces 9-8
Configuring a Range of Interfaces 9-9
Configuring and Using Interface Range Macros 9-10
Configuring Ethernet Interfaces 9-12
Default Ethernet Interface Configuration 9-12
Configuring the Port Type 9-14
Configuring Interface Speed and Duplex Mode 9-15
Speed and Duplex Configuration Guidelines 9-15
Setting the Interface Speed and Duplex Parameters 9-16
Configuring a Dual-Purpose Port 9-18
Configuring IEEE 802.3x Flow Control 9-20
Configuring Auto-MDIX on an Interface 9-21
Adding a Description for an Interface 9-22
Configuring Layer 3 Interfaces 9-22
Configuring the System MTU 9-24
Monitoring and Maintaining the Interfaces 9-26
Monitoring Interface Status 9-26
Clearing and Resetting Interfaces and Counters 9-27
Shutting Down and Restarting the Interface 9-28
CHAPTER 10 Configuring Command Macros 10-1
Understanding Command Macros 10-1
Configuring Command Macros 10-1
Default Command Macro Configuration 10-2
Command Macro Configuration Guidelines 10-2
Creating Command Macros 10-3
Applying Command Macros 10-4
Displaying Command Macros 10-5
CHAPTER 11 Configuring VLANs 11-1
Understanding VLANs 11-1
Supported VLANs 11-3
Normal-Range VLANs 11-3
Extended-Range VLANs 11-4