Cisco Cisco IOS Software Release 12.0(13)S7

To verify and monitor the selective Multicast Virtual Route Forwarding (MVRF) downloading feature, 
use the following show commands:

Router#show ip mds vrf vpn1 summary

Shows the status of the Selective Multicast Virtual 
Route Forwarding (MVRF) downloading feature. For 
example:

Router#show ip mds vrf vpn1 summary

Master lc: 1, number of ifs in master lc: 1

 Selective MVRF download is in effect

0 routes

IP multicast MDFS forwarding information and 

statistics:

Flags: D - Dense, S - Sparse, B - Bidir Group, s 

- SSM Group

       N - Not MDFS switchable, F - Not all MDFS 

switchable, O - OIF Null

       V - MVPN packets not MDFS switchable

       R - In-ratelimit, A - In-access, M - MTU 

mismatch, P - Register set

       C - In-CAR, J - Join SPT, L - Local

       Z - Multicast Tunnel

       Y - Joined MDT-data group, y - Sending to 

MDT-data group

Interface state: Interface, Next-Hop, Mac header

Router#show ip mds vrf <vpn> download interface <slot>

Shows the list of IDBs that are in the MVRF on the 
specified line card slot. For example:

Router#show ip mds vrf <vpn> download interface 

<slot>

List of IDBs on slot 3 in <vpn>

Idx    Interface name

19     GigabitEthernet3/1.1

Router#show ip mds vrf <vpn> download linecard

Shows the line cards that have mroutes downloaded for 
a given mVRF. For example:

Router#show ip mds vrf <vpn> download linecard

Mroutes Downloaded to following line cards

3