Cisco Cisco IOS Software Release 12.0(13)S7

This feature is set by default so the ip multicast command is modified with the addition of new keywords 
to bypass the feature if needed. The modified command is ip multicast mdfs download all. Two new 
commands show ip mds vrf vpn download interface slot and show ip mds vrf vpn download slot-list 
are added to monitor this feature.

Two show commands have been changed. For monitoring the MDFS Route Processor, use the show ip 
multicast command. For monitoring the MDFS line card, use the show ip mds vrf vrf_name summary 
command to display the multicast routes configured on a line card in the context of a VRF. This show 
command displays a flag indicating the feature is in effect on the line card. 

In this release, the following limitation and restriction applies:

The ip multicast-routing distributed command must be executed before using the ip multicast 
mdfs download all command to configure non-selective Multicast Virtual Route Forwarding 
(MVRF) downloading.

Changing the configuration of the selective Multicast Virtual Route Forwarding (MVRF) downloading 
feature by executing the ip multicast mdfs download all command or the no ip multicast mdfs 
download all command will cause MDFS to reload on all line cards. 

For information on configuring Cisco 12000 series routers, refer to the following documents:

The Selective Virtual Route Forwarding (SVRF) downloading feature is supported in Cisco IOS Release 
12.0(32)SY on the following Integrated Services Engine (ISE) line cards and SPAs:

Ethernet Line Cards

4-port Gigabit Ethernet ISE Line Card (Minimum 512 Megabytes memory)