CHAPTER 16
Configuring Multiple Spanning-Tree Protocol
•
Finding Feature Information, page 241
•
Prerequisites for MSTP, page 241
•
Restrictions for MSTP, page 242
•
Information About MSTP, page 243
•
How to Configure MSTP Features, page 261
•
Examples, page 281
•
Monitoring MST Configuration and Status, page 285
•
Feature Information for MSTP, page 285
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and
feature information, see Bug Search Tool and the release notes for your platform and software release. To
find information about the features documented in this module, and to see a list of the releases in which each
feature is supported, see the feature information table at the end of this module.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not
required.
Prerequisites for MSTP
•
For two or more switches to be in the same multiple spanning tree (MST) region, they must have the
same VLAN-to-instance map, the same configuration revision number, and the same name.
•
For two or more stacked switches to be in the same MST region, they must have the same
VLAN-to-instance map, the same configuration revision number, and the same name.
•
For load-balancing across redundant paths in the network to work, all VLAN-to-instance mapping
assignments must match; otherwise, all traffic flows on a single link. You can achieve load-balancing
across a switch stack by manually configuring the path cost.
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
241
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