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Cisco Network Modules Hardware Installation Guide
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Chapter 18 Connecting Cisco EtherSwitch Service Modules
Stacking the Cisco EtherSwitch Service Modules
Stacking the Cisco EtherSwitch Service Modules
This section provides this information:
•
Planning the Stack
•
Stack Cabling Considerations
•
Connecting to the Cisco StackWise Ports
Planning the Stack
You can stack two Cisco EtherSwitch service modules in a stack by connecting them through their Cisco
StackWise ports.
Before connecting the Cisco EtherSwitch service modules in a stack, observe these planning
considerations:
•
Length of cable. Depending on the configurations you have, you might need different sized cables.
If you require a 0.5-meter (0.6-ft) cable, 1-meter (3.3-ft) cable, or 3-meter (9.8-ft) cable, you can
order it from your Cisco supplier.
•
Make sure that there is access to the front of the rack if you are planning to stack the Cisco
EtherSwitch service modules.
•
For concepts and procedures to manage Cisco EtherSwitch service module stacks, see the
Catalyst 3750 Switch Software Configuration Guide
, Cisco IOS Release 12.2 at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/index.htm
•
See these sections for additional considerations: the
“Powering Considerations for a Switch Stack”
section on page 18-14
and the
“Stack Cabling Considerations” section on page 18-15
.
Note
Creating a stack of multiple Catalyst 3750 switch modules or service modules (using the stacking ports
on the Cisco StackWise EtherSwitch service modules) requires specific cabling.
Stack Cabling Considerations
The illustrations in this section display cabling configuration examples that show the stack bandwidth
and possible stack partitioning.
Figure 18-8
shows a stack of Cisco EtherSwitch service modules and Catalyst 3750 switches that
provides full bandwidth and redundant connections.