Multicast Tunnels link: Clicking this link takes you to the Multicast Tunnels page, where you can create, enable, and disable multicast tunnels and set parameters for them.

Destination field: Shows the destination IP address of the multicast tunnel.

Threshold field: Shows the minimum IP time to live (TTL) value.

Rate Limit (kb/sec) field: Shows the bandwidth limit, in units of kilobits per second, for all multicast traffic forwarded along the tunnel.

Metric field: Shows the cost associated with sending a datagram on the interface.

Local Address field: Shows the IP address of the local interface that is the multicast tunnel's source.