Configuring The Hello Time; Configuring The Forwarding-Delay Time For A Vlan - Cisco Catalyst 2950 Software Configuration Manual

Configuring Spanning-Tree Features

Configuring the Hello Time

You can configure the interval between the generation of configuration messages by the root switch by
changing the hello time.
Note Exercise care when using this command. For most situations, we recommend that you use the
spanning-tree vlan vlan-id root primary and the spanning-tree vlan vlan-id root secondary global
configuration commands to modify the hello time.
Beginning in privileged EXEC mode, follow these steps to configure the hello time of a VLAN:
Command
Step 1 configure terminal
Step 2 spanning-tree vlan vlan-id hello-time seconds
Step 3
end
Step 4 show spanning-tree vlan vlan-id
Step 5 copy running-config startup-config
To return the switch to its default setting, use the no spanning-tree vlan vlan-id hello-time global
configuration command.

Configuring the Forwarding-Delay Time for a VLAN

Beginning in privileged EXEC mode, follow these steps to configure the forwarding-delay time for a
VLAN:
Command
Step 1
configure terminal
Step 2 spanning-tree vlan vlan-id forward-time
seconds
Step 3
end
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Purpose
Enter global configuration mode.
Configure the hello time of a VLAN. The hello time is the
interval between the generation of configuration messages by
the root switch. These messages mean that the switch is alive.
For vlan-id, the range is 1 to 4094 when the enhanced
•
software image is installed and 1 to 1005 when the
standard software image is installed. Do not enter leading
zeros.
• For seconds, the range is 1 to 10; the default is 2.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Configure the forward time of a VLAN. The forward delay is the
number of seconds a port waits before changing from its
spanning-tree learning and listening states to the forwarding state.
• For vlan-id, the range is 1 to 4094 when the enhanced
software image is installed and 1 to 1005 when the standard
software image is installed. Do not enter leading zeros.
• For seconds, the range is 4 to 30; the default is 15.
Return to privileged EXEC mode.
Chapter 10 Configuring STP
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