Discovery Of Newly Installed Switches - Cisco 2950 - Catalyst Switch Configuration Manual

Planning a Switch Cluster

Discovery of Newly Installed Switches

To join a cluster, the new, out-of-the-box switch must be connected to the cluster through one of its
access ports. An access port (AP) carries the traffic of and belongs to the management VLAN. By
default, the new switch and its access ports are assigned to management VLAN 1.
When the new switch joins a cluster, its default management VLAN changes to the VLAN of the
immediately upstream neighbor. The new switch also configures its access port to belong to the VLAN
of the immediately upstream neighbor.
Figure 7-6
Release 12.1(9)EA1 that belongs to management VLAN 16. When the new candidate switches join the
cluster, their management VLAN and access ports change from VLAN 1 to VLAN 16.
The command switch in
or later, a Catalyst 2950 LRE switch, or a Catalyst 2955 switch that belongs to VLANs 9 and 16. When
the new candidate switches join the cluster:
•
•
Figure 7-6
(Management
New (out-of-box)
candidate switch
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
7-10
shows a non-LRE Catalyst 2950 command switch running a release earlier than Cisco IOS
Figure 7-7
Switch A and its access port are assigned to management VLAN 9.
Switch B and its access port are assigned to management VLAN 16.
Discovery of Newly Installed Switches in the Same Management VLAN
Command switch
VLAN 16
Switch A
VLAN 16)
AP
VLAN 16
is a non-LRE Catalyst 2950 running Cisco IOS Release 12.1(9)EA1
VLAN 16
Switch B
(Management
VLAN 16)
AP
VLAN 16
New (out-of-box)
candidate switch
Chapter 7 Clustering Switches
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