Extended priority for ethernet packets

摘要

A network device includes a packet ingress configured to receive packets from a network, and a packet processor. The packet processor is configured to identify a first packet of the received packets as a double VLAN tagged packet including a first priority field associated with a first VLAN tag and a second priority field associated with a second VLAN tag. The packet processor is also configured to assign an extended priority profile to the first packet based on one or more bits of the first priority field and one or more bits of the second priority field, the extended priority profile being among a group of possible extended priority profiles that is larger than any group of possible priority profiles associated with a single VLAN tag of the first packet. The packet processor is further configured to process the first packet according to the assigned extended priority profile.

主权项

1. A network device comprising:
a packet ingress configured to receive packets from a network; and a packet processor configured to
identify a first packet of the received packets as a double virtual local area network (VLAN) tagged packet including (i) a first priority field associated with a first VLAN tag and (ii) a second priority field associated with a second VLAN tag,in response to identifying the first packet as a double VLAN tagged packet, assign an extended priority profile to the first packet based on (i) one or more bits of the first priority field associated with the first VLAN tag of the first packet and (ii) one or more bits of the second priority field associated with the second VLAN tag of the first packet, the extended priority profile being among a group of possible extended priority profiles, the group of possible extended priority profiles corresponding to a first group of different priorities of service of packets that is larger than any second group of different priorities of service of packets, the second group of different priorities of service being associated with a single one of the first priority field or the second priority field of the first packet, andprocess the first packet according to the assigned extended priority profile.