Cisco Catalyst 2960-X Command Reference Manual page 118
Layer 2
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Also See for Catalyst 2960-X:
- Security configuration manual (498 pages) ,
- Hardware installation manual (34 pages) ,
- Getting started manual (25 pages)
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spanning-tree uplinkfast
Do not enable the root guard on interfaces that will be used by the UplinkFast feature. With UplinkFast, the
backup interfaces (in the blocked state) replace the root port in the case of a failure. However, if root guard
is also enabled, all the backup interfaces used by the UplinkFast feature are placed in the root-inconsistent
state (blocked) and prevented from reaching the forwarding state.
If you set the max-update-rate to 0, station-learning frames are not generated, so the spanning-tree topology
converges more slowly after a loss of connectivity.
Examples
This example shows how to enable UplinkFast and set the maximum rate to 200 packets per second:
Switch(config)# spanning-tree uplinkfast max-update-rate 200
Related Commands
Command
show spanning-tree
spanning-tree vlan
Catalyst 2960-X Switch Layer 2 Command Reference, Cisco IOS Release 15.0(2)EX
112
Description
Displays spanning-tree information.
Configures STP on a per-VLAN basis.
Layer 2 Commands
OL-29043 -01
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