Allied Telesis management software layer 2+ fast ethernet switches manual

Chapter 27: MSTP Commands

Syntax 2 Examples

The following command sets the internal port cost to 500 for Ports 7 and

10.If the ports are members of more than one VLAN and the VLANs are assigned to more than one MSTI, the new internal port cost is assigned to all of their MSTI assignments:

set mstp port=7,10 intportcost=500

This example illustrates the STPID parameter. This parameter is used when a port belongs to more than one VLAN and the VLANs are assigned to different MSTIs. You can use the parameter to specify different priority and internal port costs on a port for each MSTI assignment. This command assigns Port 15 in MSTI 2 a priority of 64 (increment 4):

set mstp port=7,10 portpriority=4 stpid=2

The following command sets the internal port cost to 1,000,000 and port priority to 224 (increment 14) for Port 4:

set mstp port=4 intportcost=1000000 portpriority=14

The following command is similar to the previous example, except it assumes port 4 is a member of more than one MSTI and you want to assign the new values to only one of its MSTI assignments, in this case MSTI 12:

set mstp port=4 intportcost=1000000 portpriority=14 stpid=12

The following command sets the internal port cost for Ports 2 and 5 to

Auto, which sets the port cost based on speed:

set mstp port=2-5 intportcost=auto

428