3com 5500-ei pwr Reference Guide

 

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A switch sends trap messages conforming to 802.1d standard to the network management device 

when: 

z 

The switch becomes the root bridge of an MSTI. 

z 

Network topology changes are detected. 

# Enable a switch to send trap messages conforming to 802.1d standard to the network management 

device when the switch becomes the root bridge of MSTI 1.  

<Sysname> system-view 

System View: return to User View with Ctrl+Z. 

[Sysname] stp instance 1 dot1d-trap newroot enable 

z 

Ethernet port view: 

stp edged-port { enable | disable } 

undo stp edged-port 

z 

System view: 

stp interface interface-list edged-port { enable | disable } 

undo stp interface interface-list edged-port 

System view, Ethernet port view 

enable: Configures the port as an edge port. 

disable: Configures the port as a non-edge port. 

interface-list: Ethernet port list. You can specify multiple Ethernet ports by providing this argument in the 

form of interface-list = { interface-type interface-number [ to interface-type interface-number ] } &<1-10>, 

where &<1-10> means that you can provide up to 10 port indexes/port index ranges for this argument. 

z 

Use the stp edged-port enable command to configure the current Ethernet port as an edge port. 

Use the stp edged-port disable command to configure the current Ethernet port as a non-edge 

port. Use the undo stp edged-port command to restore the current Ethernet port to its default 

state. 

z 

Use the stp interface edged-port enable command to configure the specified Ethernet ports as 

edge ports in system view. Use the stp interface edged-port disable command to configure the 

specified Ethernet ports as non-edge ports in system view. Use the undo stp interface 

edged-port command to restore the specified Ethernet ports to the default state. 

By default, all Ethernet ports of a switch are non-edge ports. 

An edge port is a port that is directly connected to a user terminal instead of another switch or shared 

network segment. Rapid transition to the forwarding state (sometimes referred to as “Fast Start”) is 

applied to edge ports because on these ports no loops can be incurred by network topology changes.