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Catalyst 2960 and 2960-S Switch Software Configuration Guide
OL-8603-09
Chapter 8 Configuring SDM Templates
Configuring the Switch SDM Template
• If you try to configure IPv6 features without first selecting a dual IPv4 and IPv6 template, a warning
message appears.
Note The dual template is not supported on switches running the LAN lite image and is not
required on Catalyst 2960-S switches.
• Using the dual stack templates results in less TCAM capacity allowed for each resource, so do not
use it if you plan to forward only IPv4 traffic.
Setting the SDM Template
Beginning in privileged EXEC mode, follow these steps to use the SDM template to maximize feature
usage:
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 in use and the template that
becomes active after a reload.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
sdm prefer {default | dual-ipv4-and-ipv6
default | lanbase-routing | qos}
Specify the SDM template to be used on the switch:
The keywords have these meanings:
• default—Gives balance to all functions.
• dual-ipv4-and-ipv6 default—Allows the switch to be used in
dual stack environments (supporting both IPv4 and IPv6).
• lanbase-routing—Supports configuring unicast routes for static
routing on SVIs.
• qos—Maximizes system resources for QoS ACEs.
Use the no sdm prefer command to set the switch to the default
template. The default template balances the use of system resources.
Note The Catalyst 2960-S switch supports only the default and
lanbase-routing templates.
Step 3
end Return to privileged EXEC mode.
Step 4
reload Reload the operating system.