configure stpd default-encapsulation
ExtremeWare XOS 11.0 Command Reference Guide
499
configure stpd default-encapsulation
configure stpd <stpd_name> default-encapsulation [dot1d | emistp |
pvst-plus]
Description
Configures the default encapsulation mode for all ports added to the specified STPD.
Syntax Description
Default
All ports are in
emistp
mode, except those in STPD s0, whose default setting is
802.1d
mode.
Usage Guidelines
If your STPD has the same name as another component, for example a VLAN, Extreme Networks
recommends that you specify the identifying keyword as well as the name. If your STPD has a name
unique only to that STPD, the keyword
stpd
is optional.
Care must be taken to ensure that ports in overlapping domains do not interfere with the orderly
working of each domain’s protocol.
You can specify the following STP encapsulation modes:
•
dot1d
—This mode is reserved for backward compatibility with previous STP versions. BPDUs are
sent untagged in 802.1D mode. Because of this, any given physical interface can have only
one
STPD
running in 802.1D mode.
•
emistp
—This mode sends BPDUs with an 802.1Q tag having an StpdID in the VLANid field.
•
pvst-plus
—This mode implements PVST+ in compatibility with third-party switches running this
version of STP. The STPDs running in this mode have a one-to-one relationship with VLANs and
send and process packets in PVST+ format.
An StpdID is used to identify each STP domain. You assign the StpdID when configuring the domain.
An StpdID must be identical to the VLANid of the carrier VLAN in that STP domain, and that VLAN
cannot belong to another STPD.
NOTE
These encapsulation modes are for STP ports, not for physical ports. When a physical port belongs to
multiple STPDs, it is associated with multiple STP ports. It is possible for the physical port to run in
different modes for different domains for which it belongs.
stpd_name
Specifies an STPD name on the switch.
dot1d
Specifies the STP encapsulation mode of operation to be 802.1d.
emistp
Specifies the STP encapsulation mode of operation to be EMISTP.
pvst-plus
Specifies the STP encapsulation mode of operation to be PVST+.
Содержание ExtremeWare XOS 11.0
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