MPLS TABLES

Control plane:

• Collecting & propagating the information that is used to forward traffic.
•  Build RIB
• From routing protocols
• From routing protocols
• Build LIB
• Using label exchange protocol
•  Using label exchange protocol
•  From these 2 give the information to the forwarding plane

Forwarding Plane:

•  Decides how a packet will be forwarded
•  Build 2 tables FIB & LFIB
•  Responsible for forwarding the packet based ip add or label

RIB:

• Nothing but IP routing table
• Sh ip route
• Table columns Protocol, prefix, next hop

LEP:

• A LEP
•   Bind locally significant labels to routes in the RIB
•  Then exchange these label bindings with neighbor LSRs
• Stores the local & received label binding in LIB table
• LEPs are:
• LDP/TDP: in this labels are assigned to only non-bgp routes in Routing Tables
• MP-BGP: distribute label bindings for bgp routes in routing table

LIB:

• Contains the Local Label binding & label bindings learned from neighbors.
• LIB table will seen using “sh mpls ldp binding” or “sh mpls ip bindings"
• Table columns are prefix, lsr/local, label

FIB:

• Made by CEF
• Stores all labels information
• Contain each prefix, next-hop & outgoing interfaces
• See by using “sh ip cef detail"
• Column’s are prefix, Next-hop, label.

LFIB:

• It contains labels used to forward packets but not all labels bindings in RIB
• See by using “sh mpls forwarding table"
• Table column’s are inlabeL, outlabel, next-hop