"send-label" and "mpls bgp fwd"

Hi Team

Can some one point out to a good document / blog that help me understand
these 2 more clearly in IOS .

What i understood :

*mpls bgp fwd* :

 this is used in case of BGP+label and is generally automatically enabled
command. This is when we dont have LDP / RSVP running and we have to rely
on BGP for labels.
This is used in case of bgp in following cases for instance :

r1 ------r2
lets say i am working for option b and i want to enable vpnv4 b/w r1 and r2
, I n this case since i am expecting bgp + label between these 2 ; IOS
automatically enables command for me on interface joining r1 and r2

*bgp send-label*

As per me ; this again is used to build the transport label when we dont
have a LDP / RSVP to get us the labels.
But this can be in i-bgp or a e-bgp scenario .

can someone please help me understand what is to be used where .

Thanks in advance

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Received on Fri Jun 06 2014 - 17:15:09 ART