SMC Networks SMC8612XL3 F 1.0.1.3 manual R, 3-333

M ULTICAST R OUTING
3-333
CLI – This example displays the only neighboring DVMRP router.
Displaying the Routing Table
The router learns source-routed informatio n 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 mes sages
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 3-199) or the IGMP Group Membership Table (page 3-205).
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.
•Up time – The time elapsed since this entry was created.
Console#show ip dvmrp neighbor3-201
Address Interface Uptime Expire Capabilities
---------------- --------------- -------- -------- -------------
10.1.0.254 vlan1 79315 32 6
Console#