Configuring Cross-Stack Uplinkfast - Cisco WS-C2950-24 Configuration Manual

Chapter 6 Configuring the System

Configuring Cross-Stack UplinkFast

Command
Step 1
configure terminal
Step 2 spanning-tree uplinkfast
[max-update-rate
pkts-per-second]
Step 1
interface interface-id
Step 2
spanning-tree stack-port
Step 3
end
Step 4
show spanning-tree
Step 5
copy running-config
startup-config
78-6511-05
Before enabling CSUF, make sure your stack switches are properly connected.
For more information, see the
Beginning in privileged EXEC mode, follow these steps to enable CSUF:
Purpose
Enter global configuration mode.
Enable UplinkFast on the switch.
(Optional) For max-update-rate pkts-per-second, specify
the number of packets per second at which update packets
are sent. The range is 0 to 65535; the default is 150 packets
per second.
Enter interface configuration mode, and specify the GBIC
interface on which to enable CSUF.
Enable CSUF on only one stack-port GBIC interface.
The stack port connects to GigaStack GBIC multidrop
backbone. If you try to enable CSUF on a Fast Ethernet or
a copper-based Gigabit Ethernet port, you receive an error
message.
If CSUF is already enabled on an interface and you try to
enable it on another interface, you receive an error
message. You must disable CSUF on the first interface
before enabling it on a new interface.
Use this command only on access switches.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
To disable CSUF on an interface, use the no spanning-tree stack-port interface
configuration command. To disable UplinkFast on the switch, use the no
spanning-tree uplinkfast global configuration command.
Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
"Connecting the Stack Ports" section on page
Configuring STP
6-35.
6-37