Enabling Mstp On The Device; Enabling Or Disabling Mstp On A Port - 3Com Switch 7700 Configuration Manual

Enabling MSTP on the
Device
Enabling or Disabling
MSTP on a Port
Table 22 Configure the Switch Security Function
Operation
Configure switch loop protection function
(from Ethernet port view)
Restore the disabled loop protection state, as
defaulted (from Ethernet port view)
After configured with BPDU protection, the switch will disable the edge port
through MSTP, which receives a BPDU, and notifies the network manager at the
same time. These ports can be resumed by the network manager only.
The port configured with root protection only plays the role of designated port on
every instance. Whenever such a port receives a higher-priority BPDU, that is, it is
about to turn into non-designated port, it will be set to listening state and will not
forward packets any more (as if the link to the port is disconnected). If the port has
not received any higher-priority BPDU for a certain period of time thereafter, it will
resume the normal state.
When you configure a port, only one configuration at a time can be effective
among loop protection, root protection, and edge port configuration.
By default, the switch does not enable BPDU protection, root protection, or edge
port protection.
For more about the configuration commands, see the Switch 7700 Command
Reference Guide.
You can use the following command to enable MSTP on the device.
Perform the following configuration in system view.
Table 23 Enable/Disable MSTP on a Device
Operation
Enable MSTP on a device.
Disable MSTP on a device.
Restore the disable state of MSTP, as
defaulted.
Only if MSTP has been enabled on the device will other MSTP configurations take
effect.
By default, MSTP is disabled.
You can use the following command to enable or disable MSTP on a port. You
may disable MSTP on some Ethernet ports of a switch to spare them from
spanning tree calculation. This measure flexibly controls MSTP operation and saves
the CPU resources of the switch.
MSTP can be enabled/disabled on a port the following ways.
Configuring MSTP
Command
stp loop-protection
stp loop-protection
Command
stp enable
stp disable
undo stp
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