Access-list matching LDP

Hi group,

I would like to match ldp traffic on a router.

R1 ---------R2
            |
            |
            R3

Between R1 and R2 are eigrp as the routing protocol as well MP-BGP.
The interfaces between R1 and R2 are configured with mpls ip and ldp as the label distribution protocol.
Now I would like to configure an access-list which matches all the routing traffic as well LDP on R2

I the case of ldp I'm not sure ...maybe the destination address on R2 should be te interface connecting to R1 as udo and tcp ?!

I remember there was also a good link which explains access-list that should match routing protocols. Anyone know the link ?

Dennis

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