HP Cisco Catalyst Blade Switch 3020 Cisco Catalyst Blade Switch 3020 for HP Co - Page 486

spanning-tree mst hello-time Chapter 2 Cisco Catalyst Blade Switch 3020 for HP Cisco IOS Commands spanning-tree mst hello-time Use the spanning-tree mst hello-time global configuration command to set the interval between hello bridge protocol data units (BPDUs) sent by root switch configuration messages. Use the no form of this command to return to the default setting. spanning-tree mst hello-time seconds no spanning-tree mst hello-time Syntax Description seconds Interval between hello BPDUs sent by root switch configuration messages. The range is 1 to 10 seconds. Defaults The default is 2 seconds. Command Modes Global configuration Command History Release 12.2(25)SEF Modification This command was introduced. Usage Guidelines After you set the spanning-tree mst max-age seconds global configuration command, if a switch does not receive BPDUs from the root switch within the specified interval, the switch recomputes the spanning-tree topology. The max-age setting must be greater than the hello-time setting. Changing the spanning-tree mst hello-time command affects all spanning-tree instances. Examples This example shows how to set the spanning-tree hello time to 3 seconds for all multiple spanning-tree (MST) instances: Switch(config)# spanning-tree mst hello-time 3 You can verify your setting by entering the show spanning-tree mst privileged EXEC command. Related Commands Command show spanning-tree mst spanning-tree mst forward-time spanning-tree mst max-age spanning-tree mst max-hops Description Displays MST information. Sets the forward-delay time for all MST instances. 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. 2-458 Cisco Catalyst Blade Switch for HP Command Reference OL-8916-01