Alcatel Carrier Internetworking Solutions Omni Switch/Router User Manual

Page 439

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Assigning an 802.1Q Group to a Port

Page 16-9

The following sections describe the parameters shown in the screen on the preceding page.

Description

A textual description (up to thirty characters) for the service created when adding the port to
a group.

Group ID

The number of the group to which the port is to be added.

Tag

A simple identifier that is added to

802.1Q

packets for identification. This value can be any

number between 1 and 4094.

Priority/Priority Remap Values

If the module uses a Kodiak ASIC, this field is labeled either

Priority

or

Priority Remap Values

.

In single spanning tree mode, it is

Priority

. In multiple spanning tree mode, it is

Priority Remap

Values

. See

Mode

below for more detailed information.

Important Notes

ESX-K and GSX-K Kodiak ASIC-based modules support

802.1p

traffic prioritization. For chassis configurations

that include only ESX-K, GSX-K and/or WSX series
modules,

802.1p

priority bits can be carried inbound on

a tagged port (configured with multiple spanning tree

802.1Q

) across the backplane. This priority information

is used at the egress port to queue the packet, and is
sent out in the packet whether the egress port is tagged
or not.

The ESX-K and GSX-K modules can also remap incom-
ing priority on an ingress port. If priority remapping
has been configured, the new priority will be carried
across the backplane. The priority information is used
to queue the packet, and is sent out in the packet if the
egress port is tagged.

Mode

This field allows you to choose either multiple or single spanning tree. This option only
appears if the module uses 10/100 Ethernet ports. Once you select a type of spanning tree for
a port, the port automatically retains the spanning tree selection for any other group it is
added to.

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