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 configured to identify a first packet of the received packets as a double VLAN tagged packet with an extended priority profile. The packet processor is also configured to determine, based on P bits distributed among M bits of a first priority field associated with a first VLAN tag and N bits of a second priority field associated with a second VLAN tag, the extended priority profile of the first packet from among a group of possible extended priority profiles that is larger than a first group of possible priority profiles associated with the first priority field and larger than a second group of possible priority profiles associated with the second priority field. The packet processor is also configured to process the first packet according to the determined 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 VLAN tagged packet with an extended priority profile,determine, based on P bits distributed among (i) M bits of a first priority field that serves as a first VLAN priority tag associated with a first VLAN tag of the first packet and (ii) N bits of a second priority field that serves as a second VLAN priority tag associated with a second VLAN tag of the first packet, the extended priority profile of the first packet from among a group of possible extended priority profiles that is (i) larger than a first group of possible priority profiles associated with the first priority field and (ii) larger than a second group of possible priority profiles associated with the second priority field, andprocess the first packet according to the determined extended priority profile.