FEC is just a general term given to 'any group of packets that need similar treatment'.
Now, a simple way to grouping packets would be saying - "All packets going to a particular next-hop" - will be classified as part of a single FEC. Regards, Karthik On Wed, Jan 16, 2013 at 4:27 PM, vishal bhugra <[email protected]>wrote: > Hello experts > > While reading MPLS basics, I have a query :- > > FEC says providing the same behavior to same kind of packet that is > allocating the same next hop, same egress interface. > > AS book says - "In MPLS, the assignment of a particular packet to a > particular FEC is done just once, as the packet enters the network. The FEC > to which the packet is assigned is encoded as a short fixed length value > known as a "label". " > > > That mean classifying the packets and assigning the labels as per the > classification. > > > and for LIB book says - " The LIB functions in the control plane and is > used by the label distribution protocol where IP destination prefixes in > the routing table are mapped to next-hop labels that are received from > downstream neighbors, as well as local labels generated by the label > distribution protocol." > > > > I am confused - FEC says classifying the packet and assigning the label and > LIB says destination prefixes are mapped to labels. > > > *If Destination prefixes need to mapped to labels then why do we need to > classify the packets and why do we need FEC ?* > > * > * > > *I know that I am missing something because books area already reviewed by > experts.* > > > Thanks®ards > Vishal > +91 8587900305 > > Best way to predict the future ..... is to create it > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs > -- http://about.me/karthik_sagar _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
