Chapter 6
Clustering Switches
Table 6-1
Switch
Catalyst 2960-S
Catalyst 2960
Catalyst 2955
Catalyst 2950
Catalyst 2950 LRE
Catalyst 2940
Catalyst 3500 XL
Catalyst 2900 XL (8-MB switches)
Catalyst 2900 XL (4-MB switches)
Catalyst 1900 and 2820
Cluster Command Switch Characteristics
A cluster command switch must meet these requirements:
•
•
•
•
•
Standby Cluster Command Switch Characteristics
A standby cluster command switch must meet these requirements:
•
•
•
•
•
•
•
OL-26520-01
Switch Software and Cluster Capability (continued)
It is running Cisco IOS Release 12.2(25)FX or later for a Catalyst 2960 switch, or Cisco IOS
Release 12.2(53)SE or later for a Catalyst 2960-S switch.
It has an IP address.
It has Cisco Discovery Protocol (CDP) version 2 enabled (the default).
It is not a command or cluster member switch of another cluster.
It is connected to the standby cluster command switches through the management VLAN and to the
cluster member switches through a common VLAN.
It is running Cisco IOS 12.2(25)FX or later for a Catalyst 2960 switch, or Cisco IOS Release
12.2(53)SE or later for a Catalyst 2960-S switch.
It has an IP address.
It has CDP version 2 enabled.
It is connected to the command switch and to other standby command switches through its
management VLAN.
It is connected to all other cluster member switches (except the cluster command and standby
command switches) through a common VLAN.
It is redundantly connected to the cluster so that connectivity to cluster member switches is
maintained.
It is not a command or member switch of another cluster.
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
Cisco IOS Release
12.2(53)SE or later
12.2(25)FX or later
12.1(12c)EA1 or later
12.0(5.2)WC(1) or later
12.1(11)JY or later
12.1(13)AY or later
12.0(5.1)XU or later
12.0(5.1)XU or later
11.2(8.5)SA6 (recommended)
9.00(-A or -EN) or later
Understanding Switch Clusters
Cluster Capability
Member or command switch
Member or command switch
Member or command switch
Member or command switch
Member or command switch
Member or command switch
Member or command switch
Member or command switch
Member switch only
Member switch only
6-3