Customizable Sdm Template And Stackwise Virtual; Customizable Sdm Template And Issu; Sdm Templates And Switch Stacks; How To Configure Sdm Templates - Cisco Catalyst 9500 Manual

Configuring SDM Templates

Customizable SDM Template and StackWise Virtual

On a device which supports StackWise Virtual, when an SDM Template is configured on the active Supervisor
it also takes effect on the standby chassis.
If the standby chassis is configured with a different custom template than the active Supervisor, the SDM
Template of the active Supervisor is configured on the standby chassis during initialization. The standby
chassis undergoes an extra reload for the template to take effect.

Customizable SDM Template and ISSU

When a device undergoes an In-Service Software Upgrade (ISSU) to a higher release and there's a change in
the resource allocation algorithm, this upgrade can result in a different scale for the same user input. The
change in scale is detected and notified via a syslog message. The system continues to operate with the earlier
scale.
You can view the change in scale by using the show sdm prefer custom scale-change command. You can
apply this change in scale by using the sdm prefer custom commit command. The device has to be reloaded
for the change to take effect.
When a device with a customizable SDM template for FIB features undergoes a downgrade to a release earlier
than the Cisco IOS XE Amsterdam 17.3.1 release, you need to change the SDM template to a static SDM
template before the downgrade. You can change the template using the sdm prefer template name command.
Reload the system for the change to take effect before proceeding with the downgrade.
When a device with a customizable SDM template for ACL features undergoes a downgrade to a release
earlier than the Cisco IOS XE Bengaluru 17.4.1 release, you need to change the SDM template to a static
SDM template before the downgrade.
When a device has customizable SDM templates for both FIB and ACL features customized in the Cisco IOS
XE Bengaluru 17.4.1 release and it downgrades to the Cisco IOS XE Amsterdam 17.3.1 release, the device
will be restored with the customizations for the FIB features. The scale numbers for the ACL features will be
alloted based on the scale values of the standard SDM template. The information about the customization of
the ACL features will be preserved. The device will be restored with the customizations for the ACL features
when it upgrades to the Cisco IOS XE Bengaluru 17.4.1 release.

SDM Templates and Switch Stacks

In a switch stack, all stack members must use the same SDM template that is stored on the active switch.
When a new switch is added to a stack, the SDM configuration that is stored on the active switch overrides
the template configured on an individual switch.
You can use the show switch privileged EXEC command to see if any stack members are in SDM mismatch
mode.

How to Configure SDM Templates

Setting the SDM Template

Follow these steps to use the SDM template to maximize feature usage:
System Management Configuration Guide, Cisco IOS XE Amsterdam 17.2.x (Catalyst 9500 Switches)
Customizable SDM Template and StackWise Virtual
169