Cisco Catalyst 3550 Series User Manual

6-11
Catalyst 3550 Multilayer Switch Software Configuration Guide
78-11194-09
Chapter 6 Clustering Switches
Planning a Switch Cluster
Figure 6-7 Discovery through Routed Ports
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 command switch in Figure 6-8 belongs to VLANs 9 and 16. When the new Catalyst 3550 and
non-LRE switches join the cluster:
• The Catalyst 3550 switch and its access port are assigned to VLAN 9.
• The non-LRE Catalyst 2950 switch and its access port are assigned to management VLAN 16.
Si
Si
Si
RP
RP
VLAN 62
VLAN
9
VLAN 62
VLAN 9
VLAN 4
VLAN 9
Command switch
65813
(management
VLAN 62)
Member
switch 7

Cisco Catalyst 3550 Series Specifications

General

Brand	Cisco
Model	Catalyst 3550 Series
Category	Network Router
Language	English