Planning The Stack - Cisco CISCO2650 - 2650 Router Hardware Installation Manual

Chapter 18 Connecting Cisco EtherSwitch Service Modules
Stacking the Cisco EtherSwitch Service Modules
This section provides this information:
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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:
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Creating a stack of multiple Catalyst 3750 switch modules or service modules (using the stacking ports
Note
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
provides full bandwidth and redundant connections.
OL-2485-20
Planning the Stack
Stack Cabling Considerations
Connecting to the Cisco StackWise Ports
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
section on page 18-14 and the
shows a stack of Cisco EtherSwitch service modules and Catalyst 3750 switches that
Stacking the Cisco EtherSwitch Service Modules
"Powering Considerations for a Switch Stack"
"Stack Cabling Considerations" section on page
Cisco Network Modules Hardware Installation Guide
18-15.
18-15