Alcatel OmniAccess 512 User Manual

Browse online or download User Manual for Network switches Alcatel OmniAccess 512. OmniAccess 512: 802.1Q Groups

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Page 13-1
13 Managing 802.1Q Groups
This chapter documents User Interface (
UI
) commands to manage 802.1Q groups. For docu-
mentation on Command Line Interface (
CLI
) commands to manage 802.1Q groups, see the
Text-Based Configuration CLI Reference Guide
.
Important Note
In Release 4.4 and later, the OmniAccess 512 is factory-
configured to boot up in
CLI
(Command Line Interface)
mode, rather than in
UI
(User Interface) mode. See
Chapter 2, “The User Interface,” for documentation on
changing from
CLI
mode to
UI
mode.
802.1Q
is an
IEEE
standard for sending frames through the network tagged with
VLAN
identifi-
cation. Alcatel has developed its own implementation of
VLANs
that closely follows the
IEEE
standard (and enhances it). However, Alcatel
VLANs
and
802.1Q VLANs
cannot interoperate
without special configuration.
If your network uses
802.1Q
tagging, you will need to create
802.1Q
groups and specify ports
that will handle
802.1Q
traffic.
Support for
802.1Q
in the OmniAccess 512 allows you to set up port-based groups that inter-
operate with
802.1Q
-compliant equipment from other networking vendors.
Ports added to an
802.1Q
group are done using Ethernet switch services. When using the
service commands to add ports to an
802.1Q
group, multiple spanning tree instances on a
single port are supported. See
Single vs. Multiple Spanning Tree
on page 13-4 for more infor-
mation on the differences between single and multiple spanning tree.
The 802.1Q specification defines
trunk
and
access
ports (and links). Trunk links are LAN
segments used for multiplexing VLANs between VLAN bridges. All devices that are directly
connected to a trunk link must be VLAN-aware. Access links are LAN segments used to multi-
plex one or more VLAN-unaware devices into a port of a VLAN bridge. (This also includes a
hybrid with some tagged and some untagged Groups.)
Note
The use of the word
trunk
in this document should not
be confused with the IEEE use of
trunking
with link
aggregation (such as OmniChannel and IEEE 802.3ad).
The general meaning of a trunk is an inter-switch link
over which different types of traffic are multiplexed.
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Summary of Contents

Page 1 - 13 Managing 802.1Q Groups

Page 13-1 13 Managing 802.1Q Groups This chapter documents User Interface ( UI ) commands to manage 802.1Q groups. For docu-mentation on Command Line

Page 2 - Page 13-2

Deleting 802.1Q Groups from a PortPage 13-10Deleting 802.1Q Groups from a Port802.1Q groups for 10/100 ports can be deleted using the das command. To

Page 3 - Application Example

Page 13-2 IEEE 802.1Q Sections Not Implemented Some portions of the 802.1Q specification have not yet been implemented in the Omni-Access 512. These

Page 4 - Page 13-4

Page 13-3 Application Example The following diagram illustrates a simple 802.1Q application: Simple 802.1Q Application In the above diagram, the PC

Page 5

Page 13-4 Single vs. Multiple Spanning Tree In previous releases of the OmniAccess 512 software (4.0 and earlier), spanning tree support was done on

Page 6 - Page 13-6

Page 13-5 The above diagram shows how traffic on VLAN 1 is blocked between Switch 1 and Switch 2, while VLAN 2 traffic is allowed to pass. The revers

Page 7 - Page 13-7

Assigning an 802.1Q Group to a Port Page 13-6 Assigning an 802.1Q Group to a Port Previous versions of Alcatel switches (version 4.0 and earlier) onl

Page 8 - Modifying 802.1Q Groups

Assigning an 802.1Q Group to a Port Page 13-7 The following sections describes the parameters displayed in the screen above. Description A textual d

Page 9 - Page 13-9

Modifying 802.1Q GroupsPage 13-8Modifying 802.1Q Groups 802.1Q groups for 10/100 ports can be modified using the mas command. To modify the configurat

Page 10 - 802.1Q service

Viewing 802.1Q Groups in a PortPage 13-9Viewing 802.1Q Groups in a PortTo view the ports assigned to an 802.1Q group, enter the vas command at the sy

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