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10-6 CHAPTER 10: ADMINISTERING IP MULTICAST ROUTING
Administering
Multicast Tunnels
A multicast tunnel allows multicast packets to cross several unicast routers
to a destination router that supports multicast. A tunnel has two end points.
The local end point is associated with an interface on the LANplex router.
When you define the tunnel, you specify the associated index on the local
LANplex router and then the characteristics of the tunnel. Tunnel
characteristics are the same as the those of an interface. You also specify the
IP address of the remote multicast router.
Not all multicast configurations require a tunnel. The only configurations
that require a tunnel are those that require a connection between two
multicast internetworks through one or more unicast routers.
Displaying
Multicast Tunnels
To display the IP multicast tunnel(s) on the router, from the top level menu
of the Administration Console, enter:
ip multicast tunnel display
Example IP multicast tunnel configuration:
Top-Level Menu
system
ethernet
fddi
atm
bridge
➧ip
ipx
appletalk
snmp
analyzer
script
logout
interface
route
arp
atmArpServer
➧multicast
udpHelper
routing
icmpRouterDiscovery
rip
ping
statistics
dvmrp
igmp
interface
➧tunnel
routeDisplay
cacheDisplay
➧display
define
remove
Index Local Address Remote Address Metric Threshold RateLimit State
1 158.101.112.204 137.39.229.98 2 255 500
pkts in:320069 pkts out:0
peers 137.39.229.98 (3.8) (0xe)