Enabling Uplinkfast For Use With Redundant Links - Cisco WS-CBS3032-DEL Software Configuration Manual

Chapter 20 Configuring Optional Spanning-Tree Features
You can also use the spanning-tree bpdufilter enable interface configuration command to enable
BPDU filtering on any interface without also enabling the Port Fast feature. This command prevents the
interface from sending or receiving BPDUs.
Enabling BPDU filtering on an interface is the same as disabling spanning tree on it and can result in
Caution
spanning-tree loops.
You can enable the BPDU filtering feature if your switch is running PVST+, rapid PVST+, or MSTP.
Beginning in privileged EXEC mode, follow these steps to globally enable the BPDU filtering feature.
This procedure is optional.
Command
Step 1
configure terminal
Step 2 spanning-tree portfast bpdufilter default
Step 3 interface interface-id
Step 4 spanning-tree portfast
Step 5 end
Step 6
show running-config
Step 7 copy running-config startup-config
To disable BPDU filtering, use the no spanning-tree portfast bpdufilter default global configuration
command.
You can override the setting of the no spanning-tree portfast bpdufilter default global configuration
command by using the spanning-tree bpdufilter enable interface configuration command.

Enabling UplinkFast for Use with Redundant Links

UplinkFast cannot be enabled on VLANs that have been configured with a switch priority. To enable
UplinkFast on a VLAN with switch priority configured, first restore the switch priority on the VLAN to
the default value by using the no spanning-tree vlan vlan-id priority global configuration command.
Note When you enable UplinkFast, it affects all VLANs on the switch or switch stack. You cannot configure
UplinkFast on an individual VLAN.
You can configure the UplinkFast or the CSUF feature for rapid PVST+ or for the MSTP, but the feature
remains disabled (inactive) until you change the spanning-tree mode to PVST+.
OL-13270-06
Purpose
Enter global configuration mode.
Globally enable BPDU filtering.
By default, BPDU filtering is disabled.
Specify the interface connected to an end station, and enter
interface configuration mode.
Enable the Port Fast feature.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
Configuring Optional Spanning-Tree Features
20-15