3Com Switch 8800 Configuration Guide Chapter 38 MSTP Region-configuration
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Setting the Timeout Factor of a Specific Bridge
z Configuring the Max Transmission Speed on a Port
z Configuring a Port as an Edge Port or Non-edge Port
z Configuring the Path Cost of a Port
z STP Path Cost Calculation Standards on STP port
z Configuring the Priority of a Port
z Configuring the Port (Not) to Connect with the Point-to-Point Link
z Configuring the mCheck Variable of a Port
z Configuring the Switch Protection Function
z Enabling/Disabling MSTP on the Device
z Enable/Disable Address Table Reset on Specified Port
z Enabling/Disabling MSTP on a Port
Only after MSTP is enabled on the device will other configurations take effect. Before
enabling MSTP, you can configure the related parameters of the device and Ethernet
ports, which will take effect upon enabling MSTP and stay effective even after resetting
MSTP. The check region-configuration command can display the region parameters
that have not yet taken effect. The display current-configuration command shows
the parameters configured before MSTP is enabled. For those configured after MSTP
is enabled, you can use the related display commands. For detailed information, refer
to the “Display and Debug MSTP” section.
Note:
When GVRP and MSTP start on the switch simultaneously, GVRP packets will
propagate along CIST which is a spanning tree instance. In this case, if you want to
issue a certain VLAN through GVRP on the network, you should make sure that the
VLAN is mapped to CIST when configuring the VLAN mapping table of MSTP.
CIST is spanning tree instance 0.
Which MST region a switch belongs to is determined with the configurations of the
region name, VLAN mapping table, and MSTP revision level. You can perform the
following configurations to put a switch into an MST region.
I. Entering MST region view
Perform the following configuration in system view.