3Com MSR 30, MSR 50 manual Stp edged-port enable disable, Undo stp edged-port

612CHAPTER 38: MSTP CONFIGURATION COMMANDS

■Configured in Ethernet interface view, the setting is effective on the current port only; configured in port group view, the setting is effective on all the ports in the port group.

■If you set instance-idto 0, you are setting the path cost of the port in the CIST. The path cost setting of a port can affect the role selection of the port. Setting different path costs for the same port in different MST instances allows different VLAN traffic flows to be forwarded along different physical links, thus to enable per-VLAN load balancing. When the path cost of a port is changed, MSTP will re-compute the role of the port and initiate a state transition.

■If you do not provide instance instance-id, your configuration will take effect in the CIST instance only.

Examples # Set the path cost of port Ethernet 1/3 in MST instance 2 to 200.

<Sysname> system-view

[Sysname] interface ethernet 1/3 [Sysname-Ethernet1/3] stp instance 2 cost 200

stp edged-port

Syntax	stp edged-port { enable disable }
	undo stp edged-port
View	Ethernet interface view, port group view
Parameters	enable: Configures the current port to be an edge port.
	disable: Configures the current port to be a non-edge port.
Description	Use the stp edged-port enable command to configure the current port to be
	an edge port.

Use the stp edged-port disable configure the current port to be a

or undo stp edged-port enable command to non-edge port.

All Ethernet ports are non-edge ports by default.

Note that:

■Configured in Ethernet interface view, the setting is effective on the current port only; configured in port group view, the setting is effective on all the ports in the port group.

■If a port directly connects to a user terminal rather than another device or a shared LAN segment, this port is regarded as an edge port. When the network topology changes, an edge port will not cause a temporary loop. Therefore, configuring a port as an edge port can enable the port to transition to the forwarding state rapidly. We recommend that you configure an Ethernet port directly connecting to a user terminal as an edge port before to enable it to transition to the forwarding state rapidly.