Spanning-Tree Mst Forward-Time - Cisco ME 3400 Command Reference Manual
Ethernet access switch
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spanning-tree mst forward-time
spanning-tree mst forward-time
Use the spanning-tree mst forward-time global configuration command to set the forward-delay time
for all multiple spanning-tree (MST) instances. The forwarding time specifies how long each of the
listening and learning states last before the interface begins forwarding. Use the no form of this
command to return to the default setting.
Syntax Description
seconds
Defaults
The default is 15 seconds.
Command Modes
Global configuration
Command History
Release
12.2(25)EX
Usage Guidelines
On the Cisco ME switch, spanning-tree MST configuration is supported only on network node interfaces
(NNIs) or on enhanced network interfaces (ENIs) on which Spanning-Tree Protocol (STP) has been
enabled. To set a port as an NNI or ENI, enter the port-type {nni | eni} interface configuration
command. To enable STP on an ENI, enter the spanning-tree interface configuration command.
User network interfaces (UNIs) do not participate in STP.
Changing the spanning-tree mst forward-time command affects all spanning-tree instances.
Examples
This example shows how to set the spanning-tree forwarding time to 18 seconds for all MST instances:
Switch(config)# spanning-tree mst forward-time 18
You can verify your setting by entering the show spanning-tree mst privileged EXEC command.
Related Commands
Command
show spanning-tree
spanning-tree mst hello-time
spanning-tree mst max-age
spanning-tree mst max-hops
Cisco ME 3400 Ethernet Access Switch Command Reference
2-576
spanning-tree mst forward-time seconds
no spanning-tree mst forward-time
Length of the listening and learning states. The range is 4 to 30 seconds.
Modification
This command was introduced.
mst
Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands
Description
Displays MST information.
Sets the interval between hello bridge protocol data units (BPDUs)
sent by root switch configuration messages.
Sets the interval between messages that the spanning tree receives
from the root switch.
Sets the number of hops in a region before the BPDU is discarded.
OL-9640-07
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