D-Link DWS-1008 Product Manual - Page 225

Resetting the STP Port Priority to the Default Value To reset the STP port priority to the default value, use one of the following commands: clear spantree portpri port-list clear spantree portvlanpri port-list {all | vlan vlan-id} The command applies only to the ports you specify. The port cost on other ports remains unchanged. Changing Spanning Tree Timers You can change the following STP timers: • Hello interval-The interval between configuration messages sent by a switch when the switch is acting as the root bridge. You can specify an interval from 1 through 10 seconds. The default is 2 seconds. • Forwarding delay-The period of time a bridge other than the root bridge waits after receiving a topology change notification to begin forwarding data packets. You can specify a delay from 4 through 30 seconds. The default is 15 seconds. (The root bridge always forwards traffic.) • Maximum age-The period of time that a switch acting as a designated bridge waits for a new hello packet from the root bridge before determining that the root bridge is no longer available and initiating a topology change. You can specify an age from 6 through 40 seconds. The default is 20 seconds. Changing the STP Hello Interval To change the hello interval, use the following command: set spantree hello interval {all | vlan vlan-id} Specify an interval from 1 through 10 seconds. The default is 2 seconds. The all option applies the change to all VLANs. Alternatively, specify an individual VLAN. To change the hello interval for all VLANs to 4 seconds, type the following command: DWS-1008# set spantree hello 4 all success: change accepted. D-Link DWS-1008 User Manual 206