Displaying PIM route data
Syntax:
show ip [mroute]
Without parameters, lists multicast route entries in the following situations:
When the PIM-DM router is actively forwarding a multicast flow out an interface (VLAN.)
- On a PIM-DM originator router (source directly connected) when traffic is entering the router but not forwardingNOTE:
The neighbor field will be empty in this case.
On a PIM-DM Non-originator router for a short duration after a flow's initial flood/prune cycle is seen. This entry is cleared after 5 minutes unless the flow is connected within that time period.
- [Group Address]
The multicast group IP address for the specific flow (source-group pair.)
- [Source Address]
The unicast address of the flow's source.
- [neighbor]
The IP address of the upstream multicast router interface (VLAN) from which the multicast flow is coming. A blank field indicates that the multicast source is directly connected to the router.
- [VLAN]
The interface on which the router receives the multicast flow.
Showing the route entry data on the “#2” routing switch
The next figure displays the
show ip mroute
output on the “ #2” routing switch shown in
Multicast network with a multinetted VLAN. This case illustrates two multicast groups from the same multicast source.
switch(config)# show ip mroute IP Multicast Route Entries Total number of entries : 2 Group Address Source Address Neighbor VLAN --------------- --------------- --------------- ---- 239.255.255.1 10.27.30.2 10.29.30.1 29 239.255.255.5 10.27.30.2 10.29.30.1 29