Extreme Networks ExtremeWare XOS Command Reference Manual page 498

Version 11.0

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STP Commands

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:

—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.

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 STPD and that VLAN cannot

belong to another STPD.

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.

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.

Create a VLAN named marketing and an STPD named STPD1 as follows:

create vlan marketing

create stpd stpd1

The following command adds the VLAN named marketing to the STPD STPD1, and includes all the

ports of the VLAN in STPD1:

configure stpd stpd1 add vlan marketing ports all

This command was available in ExtremeWare XOS 10.1.

ExtremeWare XOS 11.0 Command Reference Guide

Extremeware xos 11.0