Configuring The Hello Time - Cisco Catalyst 3550 series Software Configuration Manual

Chapter 16 Configuring STP
The sections that follow provide the configuration steps.

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. This
procedure is optional.
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.
78-11194-09
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, you can specify a single VLAN identified by
VLAN ID number, a range of VLANs separated by a
hyphen, or a series of VLANs separated by a comma. The
range is 1 to 4094.
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.
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring Spanning-Tree Features
16-21