MPLS VRF Configuration

VRF Configuration tasks; Create a VRF table Assign RD to the VRF Specify export and import route targets (optional) Configure a VPN ID Assign interfaces to VRFs Commands; (config)# ip vrf <name> (config-vrf)# rd route-distinguisher - can be 16 bit AS number: 32 bit decimal no OR 32…

MPLS Configuration

Mandatory Enable CEF switching Configure LDP on every label-enabled interface Optional Configure MPLS ID Configure MTU size for labelled packets Configure IP TTL propagation Configure conditional label advertising Config mpls ldp router-id interface [force] router(config-if)# mpls ip router(config-if)#mpls label protocol [tdp|ldp|both]   #!IOS v12.4(3)…

PHP (Penultimate Hop Popping)

A label is removed on the router before the last hop within an MPLS domain. PHP optimises MPLS performance (one less LFIB lookup) PHP does not work on ATM (Virtual Path Identifiers/virtual channel identifies cannot be removed) The pop or implicit null label uses a reserved value when being…

MPLS (Multi-Protocol Label Switching)

OK, so having known about MPLS for a few years and actually get a provided service in my work environment as well as the fact it is on the CCIE R&S blueprint I thought I should get a much better understanding of how it works and the various…