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Chapter 8
Configuring SDM Templates
You can use the show switch privileged EXEC command to see if any stack members are in SDM
mismatch mode. This example shows the output from the show switch privileged EXEC command when
an SDM mismatch exists:
Switch# show switch
Switch#
------------------------------------------------------------
*2
4
If the stack master is a Catalyst 3750-12S, changing the template can create these results:
•
•
This is an example of a syslog message notifying the stack master that a stack member is in SDM
mismatch mode:
2d23h:%STACKMGR-6-SWITCH_ADDED_SDM:Switch 2 has been ADDED to the stack (SDM_MISMATCH)
2d23h:%SDM-6-MISMATCH_ADVISE:
2d23h:%SDM-6-MISMATCH_ADVISE:
2d23h:%SDM-6-MISMATCH_ADVISE:System (#2) is incompatible with the SDM
2d23h:%SDM-6-MISMATCH_ADVISE:template currently running on the stack and
2d23h:%SDM-6-MISMATCH_ADVISE:will not function unless the stack is
2d23h:%SDM-6-MISMATCH_ADVISE:downgraded.
2d23h:%SDM-6-MISMATCH_ADVISE:will downgrade the stack to use a smaller
2d23h:%SDM-6-MISMATCH_ADVISE:compatible desktop SDM template:
2d23h:%SDM-6-MISMATCH_ADVISE:
2d23h:%SDM-6-MISMATCH_ADVISE:
2d23h:%SDM-6-MISMATCH_ADVISE:
Configuring the Switch SDM Template
This section describes how to configure the SDM template to be used on the switch. This section contains
this configuration information:
•
•
•
Default SDM Template
The default template for desktop switches is the default desktop template; the default template for the
Catalyst 3750-12S is the default aggregator template.
78-16180-02
Role
Mac Address
Master
000a.fdfd.0100
Slave
0003.fd63.9c00
If you change the template from an aggregator template to a desktop template and reload the switch,
the entire stack operates with the selected desktop template. This could cause configuration losses
if the number of TCAM entries exceeds the desktop template sizes.
If you change the template from a desktop template to an aggregator template and reload the switch,
any desktop switches that were part of the stack go into the SDM mismatch mode. When this occurs,
a syslog message is sent to the stack master indicating that a stack member has gone into the SDM
mismatch mode and suggesting the steps to take to bring the switch out of the mismatch mode.
Default SDM Template, page 8-3
SDM Template Configuration Guidelines, page 8-4
Setting the SDM Template, page 8-4
Current
Priority
State
5
Ready
5
SDM Mismatch
Issuing the following commands
"sdm prefer vlan desktop"
"reload"
Catalyst 3750 Switch Software Configuration Guide
Configuring the Switch SDM Template
8-3
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Troubleshooting
