cqv Translation Table

1.3.6.1.4.1.9.9.445.1.2.1

This table defines the translations performed on QinQ capable interfaces. The ifIndex in the INDEX clause identifies the QinQ interface. A QinQ interface performs the following translations: - Double Tagged to Single Tagged - the inner and outer tags of the frames internal to the switch are replaced with a single trunk VLAN tag when the outgoing frame is transmitted. - Double Tagged to Double Tagged - the outer tag of the frames internal to the switch are replaced with an outer trunk VLAN tag when the outgoing frame is transmitted. The inner tag remains unchanged in the transmitted frame. The following picture illustrates QinQ translations. <----- Provider Side -----|----- Customer Side -----> Switch +--------------------------------+ | | | +---------------+ +-------| +------------------+ | | Double Tagged | | QinQ | | Single or Double | | | Frames | --> | Intf | --> | Tagged Frames | | +---------------+ +-------| +------------------+ | | +--------------------------------+ Also, the QinQ interface sets the IEEE 802.1P prioritization bits (P bits) in the outgoing frames by copying the P bits either from the internal frame's outer or inner VLAN tag. A management application can create a conceptual row in this table by setting the cqvTranslationRowStatus to 'createAndWait' or 'createAndGo'. A conceptual row in this table cannot be modified while cqvTranslationRowStatus is set to 'active'.