Discovery Of Newly Installed Switches - Cisco Catalyst 3750-E Software Configuration Manual

Chapter 6 Clustering Switches
Figure 6-5
(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:
•
•
Figure 6-6
New (out-of-box)
candidate device
OL-9775-08
Discovery Through Routed Ports
Command device
VLAN 9
RP
RP
VLAN 62
VLAN
VLAN 62
VLAN 62)
VLAN 4
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.
Discovery of Newly Installed Switches
Command device
VLAN 9
Device A
AP
VLAN 9
9
VLAN 9
Member
device 7
Figure 6-6 belongs to VLANs 9 and 16. When new cluster-capable
VLAN 16
Device B
AP
VLAN 16
New (out-of-box)
candidate device
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
Planning a Switch Cluster
6-9