Specifications

7-12
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
78-11380-07
Chapter 7 Clustering Switches
Planning a Switch Cluster
Figure 7-7 Discovery of Newly Installed Switches in the Same Management VLAN
Figure 7-8 Discovery of Newly Installed Switches in Different Management VLANs
HSRP and Standby Command Switches
The switch supports Hot Standby Router Protocol (HSRP) so that you can configure a group of standby
command switches. Because a command switch manages the forwarding of all communication and
configuration information to all the member switches, we strongly recommend that you configure a
cluster standby command switch to take over if the primary command switch fails.
A cluster standby group is a group of command-capable switches that meet the requirements described
in the “Standby Command Switch Characteristics” section on page 7-3. Only one cluster standby group
can be assigned per cluster.
APAP
Command switch
Catalyst 3500 XL
switch
Catalyst 2950
switch
VLAN 16
VLAN 16
VLAN 16
VLAN 16
New (out-of-box)
Catalyst 2900 LRE XL
switch
New (out-of-box)
Catalyst 2950
switch
65581
(Management
VLAN 16)
(Management
VLAN 16)
Command switch
New (out-of-box)
Catalyst 2950
switch
AP
Catalyst 2950
switch
VLAN 9
VLAN 9
VLAN 16
VLAN 16
New (out-of-box)
Catalyst 3550
switch
Catalyst 3500 XL
switch
74050
AP
(Management
VLAN 9)
(Management
VLAN 16)