Cabletron Systems SmartSTACK 100 ELS100-24TX Installation and operating instructions

USER’S GUIDE ADDENDUM
SMARTSTACK ELS100-24
FIRMWARE REVISION 2.01
9033194

Cabletron Systems, Inc.
PO Box 5005
Rochester, N 03866-5005
This addendum is to be used in conjunction with the Installation and User Guide that ships
with the Cabletron SmartSTACK 100 ELS100-24TXG and/or ELS100-24TXM Ethernet
Switches.
This document contains proprietary information that is the property of Cabletron Systems,
Inc. No part of this publication may be reproduced, stored in a retrieval system, translated,
transcribed, or transmitted, in any form, or by any means, manual, electric, electronic, elec-
tromagnetic, mechanical, chemical, optical, or otherwise, without prior explicit written permis-
sion of Cabletron Systems, Inc. Furthermore, Cabletron Systems, Inc. reserves the right to
revise this publication and to make changes in content from time to time without obligation to
provide notification of such revision or changes.
© Copyright 1999 by Cabletron Systems
All Rights Reserved
Printed in the United States of America
Order Number: 9033194 August 1999
Cablet on Systems, SPECTRUM, LANVIEW, and Mic oMMAC are registered trademarks
and Sma tSwitch is a trademark of Cabletron Systems, Inc.
All other product names mentioned in this manual may be trademarks or registered trade-
marks of their respective companies.

9033194 Table Of Contents i
TABLE OF CONTENTS
SMARTSTACK ELS100-24 FIRMWARE REVISION 2.01 . . . . . . . . . . . . . . . . . . 1
A.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
A.2 User Interface Menu ierarchy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
A.3 SmartTrunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
A.3.1 Configuring SmartTrunking: User Interface . . . . . . . . . . . . . . 5
A.3.1.1 SmartTrunking Configuration Menu. . . . . . . . . . . . . . . . . . . 5
A.3.1.2 Spanning Tree Trunk Configuration Menu . . . . . . . . . . . . . 9
A.3.2 Configuring SmartTrunking: Web-Based Management . . . . 11
A.3.2.1 SmartTrunking Configuration . . . . . . . . . . . . . . . . . . . . . . 11
A.4 alf Duplex Support on 100Base-FX Ports . . . . . . . . . . . . . . . . . . 13
A.5 Read-only Password Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
A.6 Disable Serial Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
A.7 Syslog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
A.7.1 User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
A.8 MIB Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
A.8.1 802.1p and 802.1Q MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
A.8.2 Interfaces MIB: RFC 2233 . . . . . . . . . . . . . . . . . . . . . . . . . . 17
A.8.3 Cabletron Proprietary MIB . . . . . . . . . . . . . . . . . . . . . . . . . . 18
A.8.4 SmartTrunking MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
A.9 Power Up Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
A.10 Web Management Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

9033194 SmartSTACK ELS100-24 Firmware Revision 2.01 1
ADDENDUM A. SMARTSTACK ELS100-24
FIRMWARE REVISION 2.01
A.1 Int oduction
The Cabletron SmartSTACK ELS100-24 firmware revision 2.01 supports
the following models of the ELS100-24 product family:
•ELS100-24TX
•ELS100-24TXM
•ELS100-24TXG
Firmware revision 2.01 provides the following new features:
•SmartTrunking - Allows multiple physical ports of the switch to be
aggregated together to form a single logical connection between
network devices.
•alf-duplex support on 100Base-FX ports - Enables half duplex
operation on 100Base-FX ports.
•Read-only password - Adds an additional password option to the
user interface (serial console and Telnet) for read-only access.
•Disable serial console option - Adds a variable to SNMP allowing the
serial console of the switch to be disabled or enabled.
•Syslog feature - Allows various types of errors encountered by the
switch software to be logged to an external server.
•MIB Enhancements
- 802.1p and 802.1Q MIB: Adds partial support for the IETF MIBs
for configuring 802.1p (priority) and 802.1Q (VLANs).
- RFC 2233 MIB: Adds support for the Stack Table portion of RFC
2233, extensions to the Interfaces MIB.
- Cabletron MIB Extensions: Adds several new variables to the
Cabletron MIB.
- SmartTrunking MIB: Adds a new proprietary MIB for configuring
SmartTrunking.
The following two features were available in the previous Cabletron
SmartSTACK ELS100-24 firmware version, but were not documented:
•Power Up Diagnostics - Allows you to enable a switch functionality
self-test upon initialization.
•Web Management Enable - Allows you to enable switch
management over the web.

2 SmartSTACK ELS100-24 Firmware Revision 2.01 9033194
A.2 Use Inte face Menu Hie a chy
Figure A-1 shows the user interface hierarchy for the Cabletron
SmartSTACK ELS100-24, firmware revision 2.01.
Figu e A-1. Use Inte face Menu Hie a chy
System
Configuration
Menu
SNMP Configuration Menu
System Name
System Location
System Contact
IP Address
Subnet Mask
Default Gateway
BootP/D CP Enable
Screen Timeout (minutes)
READ/WRITE Password
READ ONLY Password
Terminal Baud Rate
Power Up Diagnostics
Syslog Server IP Address
Lowest Syslog Severity Level
Web Management Enable
Switch
Configuration
Menu
Forwarding Table Configuration Menu
Spanning Tree Configuration Menu
VLAN Configuration Menu
Forwarding Table Aging Time (seconds)
Broadcast Cutoff Rate
Port Mirroring Enable
Mirrored Port Transmit Data Mirror Enable
Mirroring Port Receive Data Mirror Enable
Class of Service Configuration Menu
Trunking Configuration Menu
Port Menu ID
Port Name
Enable Status
Link Status
Auto Negotiated Status
Full Duplex Status
Speed (10/100Mbps)
Type
Flow Control Status
Configure
Switch
Statistics
Screen
ID
Transmitted
Received
Forwarded
Filtered
Dropped
Errored
Switch Summary
Port Statistics
Trunking Statistics
General
Information
Screen
Software Version
Serial Number
Base MAC Address
Up Time (minutes)
Power Up Count
Download Software Menu
Save Current Configuration
Return to Default Configuration
Logout
Reset
VLAN Enable
VLAN Menu
VLAN Port Menu
ID
VLAN Name
Ports in VLAN
VLAN Egress Ports
Configure
Port ID
Port Name
Type
Modify Port Type
Port #n Statistics
Port ID
Port Name
Priority Default
Configure
Port ID
Port Name
Path Cost
Port Priority
Port State
Select Port
SNMP Private Community Name
SNMP Public Community Name
Trap Destination #1-4
Community Name #1-4
Display Table
Make Entry Static
Add Static Entry
Delete Static Entry
Modify Static Entry
Search by Port#
Search by MAC Address
Spanning Tree Protocol Enable
Port Configuration Menu
ello Time (seconds)
Forward Delay (seconds)
Max Age (seconds)
Bridge Priority
SmartTrunking Configuration Menu
Class of Service Enable
Priority Threshold
Configure Port Priority
Frames Transmitted
Frames Received
Frames Forwarded
Frames Filtered
Frames Dropped
Frames Errored
Frames Transmitted Collisions
Frames Received Late Collisions
Frames Forwarded CRC/Alignment Errors
Frames Filtered Undersized Frames
Frames Dropped Oversized Frames
Broadcasts Transmitted Fragments
Broadcasts Received Jabbers
Multicasts Transmitted 64 Byte Frames
Multicasts Received 65 to 127 Byte Frames
Bytes Transmitted 128 to 255 Byte Frames
Bytes Received 256 to 511 Byte Frames
Pause Frames Transmitted 512 to 1023 Byte Frames
Pause Frames Received 1024 to 1518 Byte Frames
ID
Name
Ports in Trunk
Configure
Trunk Number
Add Ports
Remove Ports
Smart Trunk Name
Protocol Enable

9033194 SmartSTACK ELS100-24 Firmware Revision 2.01 3
A.3 Sma tT unking
SmartTrunking is a link aggregation feature that allows multiple physical
ports of the switch to be aggregated together to form a single logical
connection between network devices. All physical connections in the
logical connection carry traffic, as compared with previous software
versions in which Spanning Tree would block all traffic on all but one of
the physical connections.
Backg ound
A trunk is a group of ports that perform as a single logical port, connecting
the ELS100-24 switch with another network device. Compared with a
single port, the group of ports in a trunk feature increased bandwidth and
provide a level of connection resiliency - when one physical port link in the
trunk group goes down, the overall connection is not lost. When a port in
a trunk group is removed (link goes down or a cable is severed), traffic on
that port will be redistributed to other ports in the trunk group.
In the example in Figure A-2 below, three switches are connected
(stacked) through a series of trunk groups. Two physical ports are
combined to form each trunk group. The fiber ports in the top switch form
Trunk 1 which carries traffic to the network backbone.
Figu e A-2. T unking Application Example
SmartTrunking uses the DEC unt Group protocols - PLAP and LLAP -
to automatically establish and maintain a trunk connection. Use of these
protocols can be enabled or disabled as desired. When the protocols are

4 SmartSTACK ELS100-24 Firmware Revision 2.01 9033194
enabled, the switch is SmartTrunk-compliant and will automatically
configure to work with Cabletron products such as a Smart Switch Router
(SSR), SmartSwitch, SmartSTACK, etc. When the protocols are disabled,
the switch can be manually configured to interoperate with trunking
implementations used by other vendors.
SmartTrunking support in firmware revision 2.01 follows these
configuration rules:
•There can be up to 2 trunk groups configured per switch cluster
(group of 8 ports).
•Individual trunk groups can be defined only in one cluster, not across
clusters.
•There can be from 2-8 ports defined per trunk group.
•There can be up to 6 trunk groups defined per switch.
•Ports in a trunk group can operate in any combination of speed and
duplex mode (10 half with 100 full, for example).
•Ports in a trunk group must be in the same VLAN and have the same
VLAN mode (hybrid/access).
•The Gigabit Ethernet ports on the ELS100-24TXG cannot be
trunked.
Further information on SmartTrunking can be found in the Cabletron
Systems SmartTrunk User’s Guide. To examine this guide, see the
Cabletron Systems user manual website at:
http://www.cabletron.com/support/manuals
The implementation of SmartTrunking in firmware version 2.01 on the
ELS100-24 product line differs in several ways from the information
contained in the SmartTrunk User's Guide. The primary differences in the
ELS100-24 implementation are as follows:
•Full load balancing of traffic across ports in a trunk is not supported.
Unicast traffic is sent to the same port that the destination MAC
address of the packet was learned.
•Although it is highly recommended, Spanning Tree does not have to
be enabled to use SmartTrunking.
•The ports in a trunk are not required to operate in full duplex mode,
but can be operated in any combination of half duplex or full duplex.
•If a port in a trunk goes down, traffic on that port is redirected onto
other links in the trunk whether protocols are enabled or disabled.
•If protocols are disabled, inadvertently configuring a user-attached
port to a SmartTrunking trunk group will not result in the user losing
network connectivity.
•The concept of logical ports, each comprised of the physical ports in
a trunk group, is not implemented. In both the User Interface and
SNMP, both physical port and trunk numbers can be accessed.
owever, port-related configuration features, such as port mirroring,
VLANs, Class of Service, and Spanning Tree, are performed only on
a physical port basis, not a logical port (trunk) basis.

9033194 SmartSTACK ELS100-24 Firmware Revision 2.01 5
A.3.1 Configu ing Sma tT unking: Use Inte face
SmartTrunking can be configured through the user interface.
A.3.1.1 Sma tT unking Configu ation Menu
To configure Trunking, do the following:
1. Select Switch Configuration Menu from the Main Menu.
2. Select Trunking Configuration Menu. Figure A-3 shows the Trunking
Configuration menu.
Figu e A-3. T unking Configu ation Menu
Po ts that a e membe s of a t unk g oup a e indicated as
such by an aste isk ’ * ’ next to the po t numbe on the Po t
Menu of the use inte face.
TRUNKING CONFIGURATION Access Control: READ/WRITE
Trunking Enabled Yes
Trunking Protocol Yes
ID NAME PORTS IN TRUNK
---------------------------------------------------------------------------------------------
d. Protocol Enable e. Enable x. Previous Menu
Enter Selection:

6 SmartSTACK ELS100-24 Firmware Revision 2.01 9033194
Table A-1 describes fields and options available in the Trunking
Configuration menu.
Table A-1. T unking Configu ation Menu Desc iption
3. Select c from the Trunking Configuration menu to configure trunking.
The following message appears:
Enter Trunk Number (1-6):
4. Enter a trunk group number. In this example, enter the number 1.
Press [Enter].
Figure A-4 shows the Trunk Configuration menu with trunk group number
1.
Figu e A-4. T unk Configu ation Menu
Fields/Options Desc iption
Trunking Enabled Indicates whether trunking is enabled (Yes) or disabled
(No).
Trunking Protocol Indicates whether trunking protocols are enabled (Yes)
or disabled (No).
ID Lists the trunk group ID number.
Name Lists the trunk group name (1-14 characters).
Ports inTrunk Lists the ports in the trunk group.
Configure Option that allows you to create a new, or configure an
existing, trunk group.
Delete Option that allows you to delete an existing trunk
group.
TRUNK 1 CONFIGURATION Access Control: READ/WRITE
Name
Trunk Status CONNECTED
Trunking Protocol No
PORT ENABLED LINK STATUS
---------------------------------------------------------------------------------------------
a. Add Port(s) b. Remove Port(s) c. Trunk Name
d. Protocol Enable x. Previous Menu
c. Configure d. Delete x. Previous Menu
Enter Selection: