# Displaying multicast route information

Use the following procedure to display multicast route information for troubleshooting purposes.

## Procedure steps

1. From the navigation tree, double-click IP Routing.

2. In the IP Routing tree, double-click Multicast.

3. In the work area, click the Routes tab to view multicast routes information.

## Variable definitions

The following table describes the fields of the Routes tab.

Field | Description
--- | ---
Group | Indicates the IP multicast group address.
Source | Indicates the source address.
SourceMask | Indicates the source address mask.
UpstreamNeighbor | Indicates the address of the upstream neighbor that forwards packets for the specified source and group. 0.0.0.0 appears if the network is local.
Interface | Indicates the VLAN where datagrams for the specified source and group are received.
ExpiryTime | Indicates the amount of time that remains before this entry ages out. The value 0 indicates that the entry is not subject to aging.
Protocol | Indicates the routing protocol through which this route was learned.