Cisco Catalyst 3750-X User Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 6 Clustering Switches
Planning a Switch Cluster
Figure 6-5 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 cluster command switch in Fi
gure 6-6 belongs to VLANs 9 and 16. When new cluster-capable
switches join the cluster:
• 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.
Figure 6-6 Discovery of Newly Installed Switches
101324
RP
RP
VLAN 62
VLAN
9
VLAN 62
VLAN 9
VLAN 4
VLAN 9
Command device
(management
VLAN 62)
Member
device 7
Command device
New (out-of-box)
candidate device
AP
Device A Device B
VLAN 9
VLAN 9
VLAN 16
VLAN 16
New (out-of-box)
candidate device
AP
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Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing