HP 5400ZL - Manual (Page 372)

QinQ (Provider Bridging)
Introduction
Terminology
C-VLANs . Customer network VLANs that can exist across multiple locations.
These are assigned and managed by each customer and are local to the
customer space.
C-VLAN bridge . A customer-owned device operating regular 802.1Q VLANs.
Customer . The consumer of network services delivered by a service provider.
Customer-network port . Customer-facing port on a provider edge device.
The equivalent of ‘CN’ ports of the IEEE 802.1ad standard.
Customer VLAN . See C-VLAN.
IEEE 802.1ad . Specification that allows a service provider to assign a unique
VLAN identifier (called the Service VLAN ID or S-VID) to customers using
multiple VLANs, thereby extending the total number of VLANs that can
be supported within the provider network.
Mixed vlan mode device . Device that supports both C-VLANs and S-VLANs.
A device configured in qinq mixedvlan mode can do regular CVLAN switch­
ing/routing (standard bridge behavior) and can also serve as a provider
edge device tunneling frames into and out of the provider network.
Port-based interface . Untagged customer-network ports or trunks on a
QinQ enabled device. See also S-tagged interface.
Provider-network port . Port on an S-VLAN bridge that connects to the
provider network. This equates to ‘PN’ ports of the IEEE 802.1ad standard .
QinQ . A feature that enables service providers to use a single VLAN-ID to
support multiple customer VLANs by encapsulating the 802.1Q VLAN tag
within another 802.1Q frame. See also IEEE 802.1ad.
Service Provider . The provider of the network that provides one or more
service instances to a customer.
S-tagged interface . Tagged customer-network ports or trunks on a QinQ
enabled device. See also port-based interface.
Service VLAN . See S-VLAN.
S-VLAN . Service VLANs that are used to tunnel customer frames through the
provider network to customer sites. These are managed by the service
provider who can assign each customer a unique S-VLAN ID.
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