Sdm Template Configuration Guidelines; Setting The Sdm Template - Cisco WS-C3750-48PS-S Software Configuration Manual

Configuring the Switch SDM Template

SDM Template Configuration Guidelines

You must reload the switch for the configuration to take effect.
Use the sdm prefer vlan [desktop] global configuration command only on switches intended for
Layer 2 switching with no routing. When you use the VLAN template, no system resources are reserved
for routing entries, and any routing is done through software. This overloads the CPU and severely
degrades routing performance.
Do not use the routing template if you do not have routing enabled on your switch. The sdm prefer
routing [desktop] global configuration command prevents other features from using the memory
allocated to unicast routing in the routing template.

Setting the SDM Template

Beginning in privileged EXEC mode, follow these steps to use the SDM template to maximize feature
usage:
Command
Step 1
configure terminal
Step 2 sdm prefer {default | routing | vlan}
[desktop]
Step 3 end
Step 4
reload
After the system reboots, you can use the show sdm prefer privileged EXEC command to verify the new
template configuration. If you enter the show sdm prefer command before you enter the reload
privileged EXEC command, the show sdm prefer command shows the template currently in use and the
template that will become active after a reload.
This is an example of an output display when you have changed the template and have not reloaded the
switch:
Switch# show sdm prefer
The current template is "desktop routing" template.
The selected template optimizes the resources in
the switch to support this level of features for
8 routed interfaces and 1024 VLANs.
Catalyst 3750 Switch Software Configuration Guide
8-4
Purpose
Enter global configuration mode.
Specify the SDM template to be used on the switch:
The keywords have these meanings:
default—Visible only on Catalyst 3750-12S switches to use
•
with the desktop keyword to set the switch to the default desktop
template. (Use the no sdm prefer command to set a desktop
switch to the default desktop template or to set an aggregator
switch to the default aggregator template.)
routing—Maximizes routing on the switch.
•
vlan—Maximizes VLAN configuration on the switch with no
•
routing supported in hardware.
desktop—Supported only on Catalyst 3750-12S switches. Sets
•
the switch to the default, routing, or VLAN desktop template.
The default templates balance the use of system resources.
Return to privileged EXEC mode.
Reload the operating system.
Chapter 8 Configuring SDM Templates
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