ITWissen.info - Tech know how online

priority code point (802.1ad) (PCP)

Priority Code Point (PCP) is a Tag Control Information(TCI) data field that is inserted during VLAN tagging. The PCP data field includes three bits that indicate frame priority.

TPID and TCI data field in 802.1Q and 802.1ah VLAN tagging.

TPID and TCI data field in 802.1Q and 802.1ah VLAN tagging.

The eight bit values can be used to set priorities between low - value 1 - and high - value 7. The priority value 0 corresponds to the best effort. By setting the priority values, different services can be prioritized, such as real-time transmissionfor video or voice or low- latency transmission.

Informations:
Englisch: priority code point (802.1ad) - PCP
Updated at: 22.07.2011
#Words: 84
Links: tag control information (802.1ad) (TCI), data, field, VLAN tagging, frame
Translations: DE
Sharing:    

All rights reserved DATACOM Buchverlag GmbH © 2022