Discovery Of Newly Installed Switches - Cisco Catalyst 2950 Software 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.
The command switch (running a release earlier than Release 12.1(9)EA1) in
management VLAN 16. When the new Catalyst 2900 LRE XL and Catalyst 2950 switches join the
cluster, their management VLAN and access ports change from VLAN 1 to VLAN 16.
The command switch (running Release 12.1(9)EA1 or later) in
When the new Catalyst 3550 and Catalyst 2950 switches join the cluster:
•
•
Figure 6-7
Catalyst 2900 LRE XL
Catalyst 2950 Desktop Switch Software Configuration Guide
6-12
The Catalyst 3550 switch and its access port are assigned to VLAN 9.
The Catalyst 2950 switch and its access port are assigned to management VLAN 16.
Discovery of Newly Installed Switches in the Same Management VLAN
Command switch
VLAN 16
Catalyst 2950
switch
(Management
AP
VLAN 16)
VLAN 16
New (out-of-box)
switch
Figure 6-8
VLAN 16
Catalyst 3500 XL
switch
(Management
AP
VLAN 16)
VLAN 16
New (out-of-box)
Catalyst 2950
switch
Chapter 6 Clustering Switches
Figure 6-7 belongs to
belongs to VLANs 9 and 16.
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