Stp Dot1D-Trap - 3Com Switch 4500 Family Manual

If you specify the instance-id argument to be 0 or do not specify this argument, the stp cost
command sets the path cost of the port in CIST.
Changing the path cost of a port in an MSTI may change the role of the port in the instance and put
it in state transition.
Ports with different rates have different default path costs. For details, see
Examples
# Set the path cost of Ethernet 1/0/1 in MSTI 2 to 200.
Set the path cost of Ethernet 1/0/1 in MSTI 2 to 200 in Ethernet port view.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Ethernet 1/0/1
[Sysname-Ethernet1/0/1] stp instance 2 cost 200
Set the path cost of Ethernet 1/0/1 in MSTI 2 to 200 in system view.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] stp interface Ethernet 1/0/1 instance 2 cost 200
# Set the path cost of Ethernet 1/0/2 to Ethernet 1/0/4 in MSTI 2 to 400 in system view.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] stp interface Ethernet 1/0/2 to Ethernet 1/0/4 instance 2 cost 400

stp dot1d-trap

Syntax
stp dot1d-[ instance instance-id ] trap [ newroot | topologychange ] enable
undo stp [ instance instance-id ] dot1d-trap [ newroot | topologychange ] enable
View
System view
Parameters
instance-id: MSTI ID ranging from 0 to 16. The value of 0 refers to CIST. With this argument specified,
the trap messages sent are only of the MSTI identified by this argument.
newroot: Sends trap messages conforming to 802.1d standard to the network management device
when the switch becomes the root bridge of an instance.
topologychange: Sends trap messages conforming to 802.1d standard to the network management
device when the switch detects network topology changes.
Description
Use the stp dot1d-trap command to enable a switch to send trap messages conforming to 802.1d
standard when MSTP network topology changes.
Use the undo stp dot1d-trap command to disable this function.
A switch sends trap messages conforming to 802.1d standard to the network management device
when:
1-20
Table 1-8.