SMC Networks SMC6724L3 manual 230, Displaying the Routing Table

CONFIGURING THE SWITCH

CLI – This example displays the only neighboring DVMRP router.

Console#show	ip dvmrp neighbor		4-300
Address	Interface	Uptime Expire	Capabilities

---------------- ---------------		--------	-------- -------------
10.1.0.254	vlan1	79315	32	6
Console#

Displaying the Routing Table

The router learns source-routed information from neighboring DVMRP routers and also advertises learned routes to its neighbors. The router merely records path information it has learned on its own or from other routers. It does not consider group membership or prune messages. Information stored in the routing table includes subnetworks from which IP multicast traffic originates, upstream routers that have sent multicast traffic in the past or have been learned through routing messages exchanged with other routers, interfaces connected to an upstream router, or outgoing interfaces that are connected to multicast hosts.

The DVMRP routing table contains multicast route information learned via DVMRP route updates, and is used to forward IP multicast traffic. The routes listed in the table do not reflect actual multicast traffic flows. For this information, you should look at the IGMP Member Port Table (page 3-143)or the IGMP Group Membership Table (page 3-148).

Command Attributes

•IP Address – IP subnetwork that contains a multicast source, an upstream router, or an outgoing interface connected to multicast hosts.

•Netmask – Subnet mask that is used for the source address. This mask identifies the host address bits used for routing to specific subnets.

•Upstream Neighbor – IP address of the network device immediately upstream for each multicast group.

•Interface – The IP interface on this router that connects to the upstream neighbor.

•Metric – The metric for this interface used to calculate distance vectors.

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