Extreme Networks ExtremeWare 7.7, Command Reference Manual

Page: 1590 / 2620

1590 ExtremeWare 7.7 Command Reference Guide
STP Commands
configure stpd mode
configure stpd <spanning tree name> mode [dot1d | dot1w | mstp [cist | msti
<msti-instance>]]
Description
Configures the operational mode for the specified STP domain.
Syntax Description
Default
The STPD operates in 802.1d mode.
Usage Guidelines
If you configure the STP domain in 802.1d mode, the rapid reconfiguration mechanism is disabled.
If you configure the STP domain in 802.1w mode, the rapid reconfiguration mechanism is enabled.
If you configure the STP domain in MSTP mode, the rapid reconfiguration mechanism is enabled. You
enable or disable MSTP on a per STPD basis only. You do not enable MSTP on a per port basis. MSTP
STPDs use 802.1D BPDU encapsulation mode by default. To ensure correct operation of your MSTP
STPDs, do not configure EMISTP or PVST+ encapsulation mode for MSTP STPDs.
You must first configure a common instance spanning tree (CIST) before configuring any multiple
spanning tree instances (MSTIs) in the region. You cannot delete or disable a CIST if any of the MSTIs
are active in the system.
Example
The following command configures STPD s1 to enable the rapid reconfiguration mechanism and
operate in 802.1w mode:
configure stpd s1 mode dot1w
The following command configures STPD s2 to operate as an MSTI in an MSTP domain:
configure stpd s2 mode mstp msti 3
spanning tree name Specifies an STPD name on the switch.
dot1d Specifies the STPD mode of operation to be 802.1d.
dot1w Specifies the STPD mode of operation to be 802.1ws; rapid configuration is enabled.
mstp Specifies the STPD mode of operation to be 802.1s; rapid configuration is enabled.
cist Configures the specified STPD as the common instance spanning tree for the MSTP
region.
msti Configures the specified STPD as a multiple spanning tree instance for the MSTP region.
instance-id Specifies the ID of the multiple spanning tree instance. The range is 1 to 64.