Configuring the Maximum-Aging Time To configure the maximum-aging time, perform this procedure: Before you begin An MST must be specified and enabled on the device. Procedure Configuring Multiple Spanning-Tree Protocol Configuring the Maximum-Aging Time Command or Action Purpose Example: Device> enable Enter your password if prompted. Step 2 configure terminal Example: Device# configure terminal Enters global configuration mode. Step 3 spanning-tree mst forward-time seconds Example: Device(config)# spanning-tree mst forward-time 25 Configures the forward time for all MST instances.
The forwarding delay is the number of seconds a port waits before changing from its spanning-tree learning and listening states to the forwarding state. For seconds, the range is 4 to 30; the default is 20. Step 4 end Example: Device(config)# end Returns to privileged EXEC mode. Command or Action Purpose Step 1 enable Example: Device> enable Enables privileged EXEC mode. Enter your password if prompted. Step 2 configure terminal Example: Device# configure terminal Enters global configuration mode. Step 3 spanning-tree mst max-age seconds Example: Device(config)# spanning-tree mst max-age 40 Configures the maximum-aging time for all MST instances.
The maximum-aging time is the number of seconds a device waits without receiving spanning-tree configuration messages before attempting a reconfiguration. For seconds, the range is 6 to 40; the default is 20. Configuring Multiple Spanning-Tree Protocol 24