Stp - 3Com 7750 Series Command Reference Manual

3Com Switch 7750 Series
Command Reference Guide – MSTP
Description
Use the revision-level command to set the MSTP revision level for a switch.
Use the undo revision-level command to revert to the default revision level.
By default, the MSTP revision level is 0.
MSTP revision level, along with MST region name and VLAN mapping table,
determines the MST region which a switch belongs to.
Related
vlan-mapping modulo, and active region-configuration.
Example
# Set the MSTP revision level of the MST region to 5.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] stp region-configuration
[3Com-mst-region] revision-level 5

1.1.9 stp

Syntax
stp { enable | disable }
undo stp
View
System view, Ethernet port view
Parameter
enable: Enables MSTP globally or on a port.
disable: Disables MSTP globally or on a port.
Description
Use the stp command to enable/disable MSTP globally or on a port.
Use the undo stp command to revert to the default MSTP state globally or on a port.
By default, MSTP is disabled globally and on a port.
By default, once MSTP is enabled globally, it is enabled on a port.
After MSTP is enabled, the actual operation mode, which can be STP-compatible mode,
RSTP-compatible mode, and MSTP mode, is determined by the protocol mode
configured by users. A switch becomes a transparent bridge if MSTP is disabled.
After being enabled, MSTP maintains spanning trees by processing configuration
BPDUs of different VLANs. After being disabled, it stops maintaining spanning trees.
command: instance,
Chapter 1 MSTP Configuration Commands
region-name, check
1-9
region-configuration,