THOMSON R7.4, Configuration Manual

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E-DOC-CTC-20080229-0001 v1.0
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1| Introduction
1 Introduction
Introduction
Virtual Local Area Networks, commonly known as VLANs, are the subject of this document. In this chapter,
we shortly list the VLAN features that are supported by the Thomson Gateway, the relevant standards and
related documents.
Supported VLAN features
Thomson Gateway devices support following VLAN features:
Creation of VLANs on the Thomson Gateway
VLAN features of the Ethernet bridge
VLAN learning constraints for dynamic entries
Creation of static entries with VLANs
VLAN awareness of the bridge
Tagged and untagged VLAN membership of bridge ports
Port VID of a bridge port
Acceptance of only VLAN-tagged frames
Ingress filtering of VLAN-tagged frames
Dynamic VLAN membership
Unknown VID policy
Extra tagging (stacked VLANs)
VLAN features of the logical Ethernet interfaces
WAN-side VLAN tagging
Support of VLAN routing on the Thomson Gateway
Standards compliancy
Thomson Gateway devices are compliant with following standards, which are relevant to Ethernet, Ethernet
bridging, VLAN bridging, VLAN user priorities and stacked VLANs:
IEEE Std 802.3 - 2000 : Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access
method and physical layer specifications.
IEEE Std 802.1D - 2004 : IEEE standard for local and metropolitan area networks - Media Access Control
(MAC) bridges.
IEEE Std 802.1Q - 1998 : IEEE standard for local and metropolitan area networks - Virtual bridged local
area networks.
IEEE Std 802.1p : Traffic Class Expediting and Dynamic Multicast Filtering. This standard is merged into
802.1D-2004.
IEEE Std 802.1ad - 2005 : IEEE standard for local and metropolitan area networks - Virtual bridged local
area networks - Amendment 4: Provider bridges.
Related documents
Other Layer 2 related features, such as Ethernet and Ethernet QoS, are described in other documents. See the
“Ethernet Configuration Guide” and the “Ethernet QoS Configuration Guide” for more information.