MPLS – LSP Path Selection, LIB, LFIB, RIB, FIB, and CEF forwarding reviewed, how to view the tables, and how they all work to get traffic to its destination network!

The above Topology is how traffic say from Customer site Looped 1 would Label Switch traffic over to Looped2 on the right hand side of the Topology, and I will review exactly how the LSR's know where to send a packet when it arrives with a local label but multiple neighbors advertising label bindings for … Continue reading MPLS – LSP Path Selection, LIB, LFIB, RIB, FIB, and CEF forwarding reviewed, how to view the tables, and how they all work to get traffic to its destination network!

CEF (Cisco Express Forwarding), L3 “Switching”, RIB / FIB explained, and a ton of good info important for exam day!

Once again, this is a no non-sense post, with no Topology associated to it (though there will be some router output to demonstrate things). I'll do this one bullet point style, think it makes the points jump out a bit more: CEF is described as Layer 3 Switching, but this means packet switching, not frame … Continue reading CEF (Cisco Express Forwarding), L3 “Switching”, RIB / FIB explained, and a ton of good info important for exam day!