Enabling The Output Of Port State Transition Information; Enabling The Mstp Feature - 3Com MSR 50 Series Configuration Manual

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Enabling the Output of
Port State Transition
Information
Enabling the MSTP
Feature
To do...
Enter Ethernet Enter Ethernet
interface view interface view
or port group
Enter port
view
group view
Configure the mode the port
uses to recognize/send MSTP
packets
In MSTP mode, if a port is configured to recognize/send MSTP packets in a
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mode other than auto, and if it receives a packet in the format different from
the specified type, that port will become a designated port and remain in the
discarding state to prevent the occurrence of a loop.
If a port receives MSTP packets of different formats frequently, this means that
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the MSTP packet formation configuration contains error. In this case, if the port
is working in MSTP mode, it will be disabled for protection. Those ports closed
thereby can be restored only by the network administers.
Configuration example
# Configure Ethernet 1/0 to receive and send only standard-format MSTP packets.
<Sysname> system-view
[Sysname] interface ethernet 1/0
[Sysname-Ethernet1/0] stp compliance dot1s
In a large-scale, MSTP-enabled network, there are a large number of MSTP
instances, so ports may frequently transition from one state to another. In this
situation, you can enable the device to output the port state transition information
of all STP instances or the specified STP instance so as to monitor the port states in
real time.
Follow these steps to enable output of port state transition information:
To do...
Enter system view
Enable output of port state
transition information of all
instances or a particular
instance
Configuration procedure
Follow these steps to enable the MSTP feature:
To do...
Enter system view
Enable the MSTP feature for
the device
Configuring the Root Bridge
Use the command...
interface interface-type
interface-number
port-group { manual
port-group-name |
aggregation agg-id }
stp compliance { auto |
dot1s | legacy }
Use the command...
system-view
stp port-log { all | instance
instance-id }
Use the command...
system-view
stp enable
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Remarks
User either command
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 ports in the
port group.
Optional
auto by default
Remarks
-
Optional
Whether this function is
enabled by default varies with
device models.
Remarks
-
Required
Disabled by default