Re: IP Packet fwd in MPLS enviornmenet

Hi.

You might consider this good reading, a sample chapter from CCIE RS Cert
Guide 3rd Edition.

http://www.ciscopress.com/articles/article.asp?p=1081501&seqNum=4

HTH
A.

jack daniels wrote:
> Hi All,
>
> I have a basic querry , request you to please help me with that -
>
> Q : -
>
> In MPLS Forwarding plane -
>
> when IPV4 packet comes from CE to PE ,
> Then PE does what things at the ingress point -
>
> based on my understanding process step wise is
>
> 1) It recieves packet in vrf interface
> 2) It does cef lookup for DESTINATION NETWORK
> 3) Via this CEF lookup for DESTINATION NETWORK it comes to know VPN label
> 4) It assign VPN label to packet
> 5) then it does BGP next hop lookup , to know bgp nexthop
> 6) then CEF lookup to asssign MPLS label for BGP next hop
>
>
> Thanks and Regards
> J.Daniels
>
>
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Received on Sun Jul 05 2009 - 20:33:13 ART