how to know multicast eigrp mac address on a catalyst 3560 or 3550 switch

["david robin" <robindavi@xxxxxxxxx>]

Dear All,

I have the following topology



r1 ----- sw1------r2

I run eigrp between r1 and r2 and I want to know multicast mac-address on
sw1,

I couldnt

I try to use
- show mac-address dynamic
 nothing appear except unicast addresses of router

- show mac-address multicast
nothing

- show mac-address multicast vlan 20

I try to disable igmp snooping

and repeat the commands

nothing

eigrp peer is established and I try that on 3560 and 3550 switches

any body knows how to display it

best regards,