Configure Stpd Default-Encapsulation - Extreme Networks ExtremeWare XOS Command Reference Manual

Version 11.3

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configure stpd default-encapsulation

configure stpd <stpd_name> default-encapsulation [dot1d | emistp | pvst-

Configures the default encapsulation mode for all ports added to the specified STPD.

Syntax Description

All ports are in

mode, except those in STPD s0, whose default setting is

Usage Guidelines

Care must be taken to ensure that ports in overlapping domains do not interfere with the orderly

working of each domain's protocol.

By default, when the switch boots for the first time, it automatically creates a VLAN named default with

a tag value of 1 and STPD s0. The switch associates VLAN default to STPD s0. All ports that belong to

this VLAN and STPD are in 802.1d encapsulation mode with autobind enabled. If you disable autobind

on the VLAN default, that configuration is saved across a reboot.

Naming Conventions. 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

STP Encapsulation Modes . You can specify the following STP encapsulation modes:

—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.

—This mode sends BPDUs with an 802.1Q tag having an StpdID in the VLANid field.

—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.

ExtremeWare XOS 11.3 Command Reference

Specifies an STPD name on the switch.

Specifies the STP encapsulation mode of operation to be 802.1d.

Specifies the STP encapsulation mode of operation to be EMISTP.

Specifies the STP encapsulation mode of operation to be PVST+.

configure stpd default-encapsulation

is optional.

Extremeware xos 11.3