| 摘要 |
Embodiments of the invention are directed to efficiently processing packet traffic in a system such as a switch or router having a distributed architecture. An internal header is appended to an ingress packet by an ingress packet processing device before the packet is forwarded to a fabric switch of the system. The internal header corresponds to a configuration of an ingress interface over which the packet was received. An egress packet processing device, upon receiving the packet from the switch, processes the packet based on the internal header and a configuration of an egress interface associated with the egress device. Advantageously, some packet tag manipulation operations are performed only at the egress packet processing device; thereby somewhat freeing up ingress packet processing resources.
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