Changing Spanning Tree Timers - 3Com 3CRWX120695A, 3CRWX440095A Configuration Manual

210 C 9: C
HAPTER ONFIGURING AND
Changing Spanning
Tree Timers
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ANAGING PANNING
Resetting the STP Port Priority to the Default Value
To reset the STP port priority to the default value, use one of the
following commands:
clear spantree portpri port-list
clear spantree portvlanpri port-list {all | vlan vlan-id}
The command applies only to the ports you specify. The port cost on
other ports remains unchanged.
You can change the following STP timers:
Hello interval — The interval between configuration messages sent
by a WX switch when the switch is acting as the root bridge. You can
specify an interval from 1 through 10 seconds. The default is 2
seconds.
Forwarding delay — The period of time a bridge other than the root
bridge waits after receiving a topology change notification to begin
forwarding data packets. You can specify a delay from 4 through 30
seconds. The default is 15 seconds. (The root bridge always forwards
traffic.)
Maximum age — The period of time that a WX switch acting as a
designated bridge waits for a new hello packet from the root bridge
before determining that the root bridge is no longer available and
initiating a topology change. You can specify an age from 6 through
40 seconds. The default is 20 seconds.
Changing the STP Hello Interval
To change the hello interval, use the following command:
set spantree hello interval {all | vlan vlan-id}
Specify an interval from 1 through 10 seconds. The default is 2 seconds.
The all option applies the change to all VLANs. Alternatively, specify an
individual VLAN.
To change the hello interval for all VLANs to 4 seconds, type the
following command:
WX1200# set spantree hello 4 all
success: change accepted.
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REE ROTOCOL