HP Routing Services -UX 11i v2 manual Multicast Network Example Configuration

Configuring mrouted

How to Configure mrouted

NOTE	A phyint command must precede a tunnel command. All the phyint
	and tunnel command options must be placed on a single line except for
	the boundary and altnet options, which can begin on a separate line.
Figure 2-1	Multicast Network Example Configuration
		mrouted					Node		Node	mrouted
			Router							Router
			193.3.3.3					195.5.5.5			195.5.6.7
				mrouted						mrouted
	Node				Router					Router	Node
						193.3.4.5		Nonmulticast

phyint 193.3.3.3

Tunnel 193.3.4.5 195.5.5.5 Boundary 193.3.3.3/16

phyint 195.5.6.7

Tunnel 195.5.5.5 193.3.4.5

The metric is the cost, or overhead, associated with sending a datagram on the given interface or tunnel, and is used primarily to influence the choice of routes over which the datagram is forwarded; the larger the value, the higher the cost. You must keep metrics as small as possible, because mrouted cannot route along paths with metrics greater than 31. In general, use a metric value of 1 for all links unless you are specifically attempting to force traffic to take another route. In this case, the metric of the alternate path should be the sum of the metrics on the primary path + 1. The default metric value is 1.

The threshold is the minimum IP time-to-live (TTL) required for a multicast datagram to be forwarded to a given interface or tunnel. It controls the scope of multicast datagrams. If the TTL value in the datagram is less than the threshold value, the datagram is dropped; if the TTL is greater than or equal to the threshold value, the packet is forwarded. The default threshold value is 1.

Chapter 2 33