Always Networks Blog - CEF

CCIE Written Blueprint: 1.1.b Identify Cisco express forwarding concepts

Sat 09 August 2014

Cisco Express Forwarding - that thing that "just works". You don't really need to know anything about it...until it stops just working. Here's my notes.

1.1.b Identify Cisco express forwarding concepts

CEF maintains its tables to facilitate the routing of packets purely in memory, with no CPU overhead.

If the CPU can’t handle the packet, it “punts” the packet to the software …

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