5.8.6.4.2 Displaying the Multicast Forwarding Cache

The switch maintains a cache of multicast routing entries used to calculate the delivery tree in multicast routing protocols. The Multicast Forwarding Cache includes the subnetwork that contains the multicast source and the nearest upstream neighbor for each known multicast group address.

Parameter

Description

Group Address

An IP multicast group address with subscribers directly attached or downstream

 

from this switch.

Source Address

The IP subnetwork at the root of the multicast delivery tree. This subnetwork

 

contains a known multicast source.

Mask

Subnet mask that is used for the source address. This mask identifies the host

 

address bits used for routing to specific subnets.

Upstream Neighbor

The IP address of the network device immediately upstream for this group.

Protocol

The multicast routing protocol associated with this entry.

Up Time

The time elapsed since this entry was created.

 

 

WGS3 Layer 3 Switch User’s Manual

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