Product guide

Spanning-Tree Operation
802.1D Spanning-Tree Protocol (STP) on 5300xl, 3400cl and 6400cl Switches
Table 6-3. General STP Operating Parameters
Name Default Range Function
priority 32768 0 - 65535 Specifies the priority value used along with the
switch MAC address to determine which device is
root. The lower a priority value, the higher the
priority.
*maximum-age 20 seconds 6 - 40 Maximum received message age the switch
seconds allows for STP information before discarding the
message.
*hello-time 2 seconds 1 - 10 Time between messages transmitted when the
switch is the root.
*forward-delay 15 seconds 4 - 30 Time the switch waits before transitioning from the
seconds listening to the learning state, and between the
learning state to the forwarding state.
*The switch uses its own maximum-age, hello-time, and forward-delay settings only if it is
operating as the root device. If another device is operating as the root device, then the switch
uses the other device’s settings for these parameters.
Note Executing spanning-tree alone enables STP. Executing spanning-tree with one
or more of the above “STP Operating Parameters” does not enable STP. It only
configures the STP parameters (regardless of whether STP is actually running
(enabled) on the switch).
Syntax: spanning-tree
priority < 0 - 65355 >
maximum-age < 6 - 40 seconds >
hello-time < 1 - 10 seconds >
forward-delay < 4 - 30 seconds >
Default: Refer to table 6-3, above.
For example, to configure a maximum-age of 30 seconds and a hello-time of 3
seconds for STP:
ProCurve(config)# spanning-tree maximum-age 30 hello-time 3
Reconfiguring Per-Port STP Operation on the Switch.
Syntax:
spanning-tree < port-list > path-cost < 1 - 65535 > priority < 0 - 255 > mode
< norm | fast >
Enables STP (if not already enabled) and configures the per-
port parameters listed in table 6-4.
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