Using Snmp To Manage Switch Clusters - Cisco Catalyst 2960 Software Configuration Manual

Using SNMP to Manage Switch Clusters

The CLI supports creating and maintaining switch clusters with up to 16 switch stacks. For more
Note
information about switch stack and switch cluster, see the
on page
Stacking is supported only on Catalyst 2960-S switches running the LAN base image.
Catalyst 1900 and Catalyst 2820 CLI Considerations
If your switch cluster has Catalyst 1900 and Catalyst 2820 switches running standard edition software,
the Telnet session accesses the management console (a menu-driven interface) if the cluster command
switch is at privilege level 15. If the cluster command switch is at privilege level 1 to 14, you are
prompted for the password to access the menu console.
Command-switch privilege levels map to the Catalyst 1900 and Catalyst 2820 cluster member switches
running standard and Enterprise Edition Software as follows:
•
•
Note
For more information about the Catalyst 1900 and Catalyst 2820 switches, refer to the installation and
configuration guides for those switches.
Using SNMP to Manage Switch Clusters
When you first power on the switch, SNMP is enabled if you enter the IP information by using the setup
program and accept its proposed configuration. If you did not use the setup program to enter the IP
information and SNMP was not enabled, you can enable it as described in the
section on page
When you create a cluster, the cluster command switch manages the exchange of messages between
cluster member switches and an SNMP application. The cluster software on the cluster command switch
appends the cluster member switch number (@esN, where N is the switch number) to the first configured
read-write and read-only community strings on the cluster command switch and propagates them to the
cluster member switch. The cluster command switch uses this community string to control the
forwarding of gets, sets, and get-next messages between the SNMP management station and the cluster
member switches.
When a cluster standby group is configured, the cluster command switch can change without your
Note
knowledge. Use the first read-write and read-only community strings to communicate with the cluster
command switch if there is a cluster standby group configured for the cluster.
If the cluster member switch does not have an IP address, the cluster command switch redirects traps
from the cluster member switch to the management station, as shown in
switch has its own IP address and community strings, the cluster member switch can send traps directly
to the management station, without going through the cluster command switch.
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
6-16
6-13.
If the command-switch privilege level is 1 to 14, the cluster member switch is accessed at privilege
level 1.
If the command-switch privilege level is 15, the cluster member switch is accessed at privilege level
15.
The Catalyst 1900 and Catalyst 2820 CLI is available only on switches running Enterprise
Edition Software.
30-6. On Catalyst 1900 and Catalyst 2820 switches, SNMP is enabled by default.
Chapter 6
"Switch Clusters and Switch Stacks" section
"Configuring SNMP"
Figure 6-7. If a cluster member
Clustering Switches
OL-26520-01