Content

| 3.6 |  | STP Configuration |
| 3.6.7 |  | Modifying default timers |

Hello Time
Changing the hello time configures the interval period of configuration messages generated by the root switch. For most situations, it is recommended to 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 the steps outlined in Figure to configure the hello-time for a VLAN.

To return the switch to its default setting, use the no spanning-tree vlan vlan-id hello-time global configuration command.

Beginning in privileged EXEC mode, follow the steps outlined in Figure to configure the forwarding-delay time for a VLAN.

To return the switch to its default setting, use the no spanning-tree vlan vlan-id forward-time global configuration command.

VLAN Maximum Aging Time
Beginning in privileged EXEC mode, follow the steps shown in Figure to configure the maximum-aging time for a VLAN.

To return the switch to its default setting, use the no spanning-tree vlan vlan-id max-age global configuration command.