Cisco Catalyst 2928, Software Configuration Manual

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Catalyst 2928 Switch Software Configuration Guide
OL-23389-01
Chapter 5 Clustering Switches
Using the CLI to Manage Switch Clusters
For password considerations specific to the Catalyst 1900 and Catalyst 2820 switches, refer to the
installation and configuration guides for those switches.
SNMP Community Strings
A cluster member switch inherits the command-switch first read-only (RO) and read-write (RW)
community strings with
@esN appended to the community strings:
•
command-switch-readonly-community-string @ esN , where N is the member-switch number.
• command-switch-readwrite-community-string @ esN , where N is the member-switch number.
If the cluster command switch has multiple read-only or read-write community strings, only the first
read-only and read-write strings are propagated to the cluster member switch.
The switches support an unlimited number of community strings and string lengths. For more
information about SNMP and community strings, see
Chapter 29, “Configuring SNMP.”
For SNMP considerations specific to the Catalyst 1900 and Catalyst 2820 switches, refer to the
installation and configuration guides specific to those switches.
and RADIUS
If Terminal Access Controller Access Control System Plus () is configured on a cluster
member, it must be configured on all cluster members. Similarly, if RADIUS is configured on a cluster
member, it must be configured on all cluster members. Further, the same switch cluster cannot have some
members configured with and other members configured with RADIUS.
For more information about , see the “Controlling Switch Access with ” section on
page 8-10 . For more information about RADIUS, see the “Controlling Switch Access with RADIUS”
section on page 8-17 .
LRE Profiles
A configuration conflict occurs if a switch cluster has Long-Reach Ethernet (LRE) switches that use both
private and public profiles. If one LRE switch in a cluster is assigned a public profile, all LRE switches
in that cluster must have that same public profile. Before you add an LRE switch to a cluster, make sure
that you assign it the same public profile used by other LRE switches in the cluster.
A cluster can have a mix of LRE switches that use different private profiles.
Using the CLI to Manage Switch Clusters
You can configure cluster member switches from the CLI by first logging into the cluster command
switch. Enter the
rcommand user EXEC command and the cluster member switch number to start a
Telnet session (through a console or Telnet connection) and to access the cluster member switch CLI.
The command mode changes, and the Cisco IOS commands operate as usual. Enter the
exit privileged
EXEC command on the cluster member switch to return to the command-switch CLI.
This example shows how to log into member-switch 3 from the command-switch CLI:
switch# rcommand 3