# Internet Protocol Multicasting (IPM) Route Details

To access this dialog box:

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

The IPM Route Details dialog displays detailed information for the IP Multicast Route Table entries.

The following information is displayed:

- Upstream Neighbor (ipMRouteUpstreamNeighbor)
- In Interface (ipMRouteInIfIndex)
- Route Uptime (ipMRouteUpTime)
- Route Expiry Time (ipMRouteExpiryTime)
- Multicast Routing Protocol (ipMRouteProtocol)
- Routing Protocol (ipMRouteRtProto)
- Address portion used for forwarding (ipMRouteRtAddress)
- Mask used for forwarding (ipMRouteRtMask)
- Route Type (ipMRouteRtType)
- Best Metric (ciscoIpMRouteMetric)
- Metric Preference (ciscoIpMRouteMetricPreference)
- Route Last Used (ciscoIpMRouteLastUsed)

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.

Upstream Neighbor (ipMRouteUpstreamNeighbor)

The address of the upstream neighbor (for example, RPF neighbor) where the IP datagrams are received. If 0.0.0.0 appears, the upstream neighbor is unknown.

In Interface (ipMRouteInIfIndex)

The value of ifIndex for the interface where IP datagrams sent by these sources to this multicast address are received. A value of 0 indicates that datagrams are not subject to an incoming interface check, but may be accepted on multiple interfaces; for example, in CBT.

Route Uptime (ipMRouteUpTime)

The time when the router discovered the multicast routing information for this entry.

Route Expiry Time (ipMRouteExpiryTime)

The time remaining before this entry will be timed out. The value 0 indicates that the entry does not have a timeout.

Multicast Routing Protocol (ipMRouteProtocol)

The multicast routing protocol that was discovered for this entry. Inclusion of values for multicast routing protocols does not mean that those protocols need to be supported.

Routing Protocol (ipMRouteRtProto)

The routing mechanism that was discovered for this entry. Inclusion of values for multicast routing protocols does not mean that those protocols need to be supported.

Address portion used for forwarding (ipMRouteRtAddress)

The address portion of the route used for this multicast forwarding entry.

Mask used for forwarding (ipMRouteRtMask)

The mask associated with the route used for this multicast forwarding entry.

Route Type (ipMRouteRtType)

The reason the given route was placed in the (logical) multicast RIB. A value of unicast means that the route would normally be placed only in the unicast RIB, but was placed in the multicast RIB (instead or in addition) due to local configuration; for example, when running PIM over RIP. A value of multicast means that the route was explicitly added to the multicast RIB by the routing protocol, such as DVMRP or Multiprotocol BGP.

Best Metric (ciscoIpMRouteMetric)

The best metric heard from Assert messages. This object has been replaced by ciscoIpMRouteMetric2 in order to correctly represent a 32-bit unsigned metric value.

Metric Preference (ciscoIpMRouteMetricPreference)

The best metric preference heard from Assert messages.

Route Last Used (ciscoIpMRouteLastUsed)

Elapsed time since the last multicast packet was fastswitched.