Discovery Of Newly Installed Switches - Cisco Catalyst 2975 Software Configuration Manual

Chapter 5 Clustering Switches
Figure 5-4
(management

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 only one VLAN. By default, the
new switch and its access ports are assigned to VLAN 1.
When the new switch joins a cluster, its default 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 cluster command switch in
switches join the cluster:
•
•
OL-19720-02
Discovery Through Different Management VLANs with a Layer 3 Cluster Command
Switch
Command
device
VLAN 16
Device 3
VLAN 16)
VLAN 16
Device 4
(management
VLAN 16)
One cluster-capable switch and its access port are assigned to VLAN 9.
The other cluster-capable switch and its access port are assigned to management VLAN 16.
Standby command
device
VLAN 9
VLAN 62
Device 5
(management
VLAN 62)
VLAN trunk 4, 62
Device 7
(management
VLAN 4)
VLAN 62
Device 9
(management
VLAN 62)
Figure 5-5 belongs to VLANs 9 and 16. When new cluster-capable
Catalyst 2975 Switch Software Configuration Guide
Planning a Switch Cluster
VLAN 9
Device 6
(management
VLAN 9)
VLAN 9
Device 8
(management
VLAN 9)
VLAN 4
Device 10
(management
VLAN 4)
5-9