Cisco WS-C6506 User Manual

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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 9 Configuring Spanning-Tree PortFast, UplinkFast, BackboneFast, and Loop Guard
Configuring UplinkFast on the Switch
With MISTP mode enabled, this example shows the output when you enable UplinkFast:
Console> (enable) set spantree uplinkfast enable
Instances 1-16 bridge priority set to 49152.
The port cost and portinstancecost of all ports set to above 10000000.
Station update rate set to 15 packets/100ms.
uplinkfast all-protocols field set to off.
uplinkfast enabled for bridge.
Console> (enable)
This example shows how to display the UplinkFast settings for a specific instance:
Console> show spantree uplinkfast mistp-instance 1
Station update rate set to 15 packets/100ms.
uplinkfast all-protocols field set to off.
Inst port list
------------------------------------------------
1 4/1(fwd)
Console> (enable)
Disabling UplinkFast
The set spantree uplinkfast disable command disables UplinkFast on the switch, but the switch priority
and port cost values are not reset to the factory defaults.
Note When you enter the set spantree uplinkfast disable command, it affects all VLANs on the switch. You
cannot disable UplinkFast on an individual VLAN.
To disable UplinkFast on the switch, perform this task in privileged mode:
With PVST+ mode enabled, this example shows how to disable UplinkFast on the switch and verify the
configuration:
Console> (enable) set spantree uplinkfast disable
Uplinkfast disabled for switch.
Use clear spantree uplinkfast to return stp parameters to default.
Console> (enable) show spantree uplinkfast
Station update rate set to 15 packets/100ms.
uplinkfast all-protocols field set to off.
VLAN port list
-----------------------------------------------
1 1/1(fwd),1/2
100 1/2(fwd)
521 1/1(fwd),1/2
522 1/1(fwd),1/2
523 1/1(fwd),1/2
524 1/1(fwd),1/2
Console> (enable)
Task Command
Step 1
Disable UplinkFast on the switch. set spantree uplinkfast disable
Step 2
Verify that UplinkFast is disabled. show spantree uplinkfast

Cisco WS-C6506 Specifications

General

Brand	Cisco
Model	WS-C6506
Category	Switch
Language	English