Enabling Backbonefast - Cisco 7609 Configuration Manual
Cisco ios software configuration guide—12.1e
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Chapter 16
Configuring Optional STP Features
This example shows how to verify that UplinkFast is enabled:
Router# show spanning-tree uplinkfast
UplinkFast is enabled
Router#
Enabling BackboneFast
BackboneFast operates correctly only when enabled on all network devices in the network.
Note
BackboneFast is not supported on Token Ring VLANs. This feature is supported for use with third-party
network devices.
To enable BackboneFast, perform this task:
Command
Step 1
Router(config)# spanning-tree backbonefast
Router(config)# no spanning-tree backbonefast
Step 2
Router(config)# end
Step 3
Router# show spanning-tree vlan vlan_ID
This example shows how to enable BackboneFast:
Router# configure terminal
Router(config)# spanning-tree backbonefast
Router(config)# end
Router#
This example shows how to verify that BackboneFast is enabled:
Router# show spanning-tree backbonefast
BackboneFast is enabled
BackboneFast statistics
-----------------------
Number of transition via backboneFast (all VLANs) : 0
Number of inferior BPDUs received (all VLANs)
Number of RLQ request PDUs received (all VLANs)
Number of RLQ response PDUs received (all VLANs)
Number of RLQ request PDUs sent (all VLANs)
Number of RLQ response PDUs sent (all VLANs)
Router#
78-14064-04
Purpose
Enables BackboneFast.
Disables BackboneFast.
Exits configuration mode.
Verifies that UplinkFast is enabled.
: 0
: 0
: 0
: 0
: 0
Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
Enabling BackboneFast
16-13
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Troubleshooting
