# Internet Protocol Multicasting (IPM) Next Hop Details

To access this dialog box:

1. Select Device > Configure > IP Multicast Routing Next Hop Table.
2. With an entry selected, click Detail.

This dialog box provides information on entries in the IP Multicast Routing Next Hop table.

The following information is displayed:

- Next Hop State (ipMRouteNextHopState)
- Route Uptime (ipMRouteNextHopUpTime)
- Route Expiry Time (ipMRouteNextHopExpiryTime)
- Closest Member Hops (ipMRouteNextHopClosestMemberHops)
- Multicast Routing Protocol (ipMRouteNextHopProtocol)
- Mac Address Header (ciscoIpMRouteNextHopMacHdr)

The following list specifies buttons in this dialog box, as well as their function:

- Click OK to continue.

- Click Apply to save the changes in the dialog box.

- Click Cancel to close the dialog box.

- Click Refresh to update the contents of the dialog box.

- Click Print to print the contents of the dialog box.

- Click Help to access online help.

Next Hop State (ipMRouteNextHopState)

Indicates whether the outgoing interface and next hop represented by this entry is currently being used to forward IP datagrams. The value "forwarding" indicates that this entry is currently being used for this purpose; the value "pruned" indicates that it is not.

Route Uptime (ipMRouteNextHopUpTime)

Amount of time since the multicast routing information represented by this entry was learned by the router.

Route Expiry Time (ipMRouteNextHopExpiryTime)

Minimum amount of time remaining before this entry is aged out. The value "0" indicates that the entry is not subject to aging.

Closest Member Hops (ipMRouteNextHopClosestMemberHops)

Minimum number of hops between this router and any member of the IP multicast group reached via this next hop on this outgoing interface. Any IP multicast datagrams which have a TTL less than this number of hops will not be forwarded to this next hop.

Multicast Routing Protocol (ipMRouteNextHopProtocol)

Routing mechanism through which this next hop was learned.

Mac Address Header (ciscoIpMRouteNextHopMacHdr)

Data link MAC address header for a multicast datagram; used for IP multicast fast switching.