A good link for MPLS

 
Hi Friends,
 
Found the below link interesting for a MPLS beginner.check it out.
 
http://www.cisco.com/en/US/tech/tk436/tk428/tsd_technology_support_protocol_h
ome.html
 
I do have a doubt regrding FEC.
 
FEC tells the first ingress router how to forward a particular packet based on
certain criteria eg.destination ip subnet,BGP next hop,IP precedence value
etc.all the packets who match the criteria are forwarded the same way through
out the cloud.
 
how these criterias are defined or recognised by the router ? are these being
done by manipulating the EXP bits inside a label?
 
if i am correct, then all packets in a fec have same label but all same labels
are not neccesarily under the same FEC.
 
Kindly clarify or provide any link which could clarify the concept of FEC as I
am a beginner to MPLS..
 
Thanks
Naufal

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Received on Tue Nov 10 2009 - 22:49:44 ART