IPM Next-Hop Table

The IPM Next-Hop Table contains information about the next-hop for forwarding multicast packets on outgoing interfaces. Each entry in the IPM Next-Hop Table refers to the next-hop of a specific source for a specific multicast group address.

The IPM Next-Hop Table displays the following fields:

• Group — Identifies the IP multicast group from which the multicast packet is being forwarded.

• Source — Identifies the source IP address for the multicast packet being forwarded.

• Source Mask — Masks all or part of the source IP address.

• IfIndex — Identifies the next-hop port number.

• Next-hop Address — Indicates the next-hop IP addresses. This can be identical to the Group value. However, some ports may have multiple next-hop addresses from a single outgoing interface.

• Status — Indicates if the port and next-hop are being used to forward multicast packets. The possible values are:

• Pruned — The port and next hop are currently not being used to forward multicast packets

• Forwarding — The port and the next hop are currently being used to forward multicast packets.

• Up Time — Indicates the time lapse since the router learned the multicast information.

• Expiry Time — Indicates the time in ticks before the entry expires. A value of 0 indicates that the entry is not expired. However, if the Hop Status is Pruned, the value indicates the amount of time remaining before the port and next hop revert to Forwarding.

• Next-hop Protocol — Identifies the routing protocol used to find the next hop. The possible values are:

• Other — Indicates that none of the below listed protocols are used to find the next upstream or parent interface for the next-hop.

• Local — Indicates that at manually configured protocol is used to find the next upstream or parent interface for the next-hop.

• Netmgmt — Indicates that the Network Management Protocol is used to find the next upstream or parent interface for the next-hop. This route is static.

• ICMP — Indicates that the Internet Control Message Protocol is used to find the next upstream or parent interface for the next-hop.

• RIP — Indicates that the Routing Information Protocol is used to find the next upstream or parent interface for the next-hop.

• OSPF — Indicates that the Open First Path First Protocol is used to find the next upstream or parent interface for the next-hop.

• BGP — Indicates that the Border Gateway Protocol is used to find the next upstream or parent interface for the next-hop.

• DVRMP — Indicates that the Internet Control Message Protocol is used to find the next upstream or parent interface for the next-hop.

To view the IPM Next-Hop Table window:

1. On the Menu Bar, click IPM.

2. On the IPM menu, point to IPM Routing and click IPM Next-Hop Table. The IPM Next-Hop Table is displayed.