06-11-2007 12:18 AM - last edited on 03-25-2019 03:55 PM by ciscomoderator
Hi,
is there an IOS command to see the max. spanning tree instances on a Switch??
I found the description only on the Datasheets on Cisco.com...
Are the max. STP instances only Hardware related or also IOS?
Thanks and regards,
Thomas Feichter
Solved! Go to Solution.
06-11-2007 04:52 AM
06-11-2007 04:13 AM
There is a limitation on the number of instances of STP that a switch can handle.
The Catalyst 2912 XL, Catalyst 2924 XL, and Catalyst 2924C XL support only 64 STP instances and 64 VLANs. All other Catalyst 2900 XL switches and all Catalyst 3500 XL switches support 64 STP instances and 250 VLANs.
The 3750 switches support 128 STP instances.
Ensure that the total number of logical ports across all instances of STP for different VLANs does not exceed the maximum number supported. If you exceed these STP instance recommendations, the switch exhibits high CPU utilization
HTH, rate if it does
Narayan
06-11-2007 04:30 AM
Hi,
you know also how many instances supports the Cat 3550,3560,6500,2950?
Regards,
Thomas
06-11-2007 04:52 AM
Hi,
3550: 128
3560: 128 (or 16 MST)
6500: 16 MST
2950: 64
HTH
Andrea
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