MULTICASTING Rl config-if R1 config R1 config 1Ð 1grĐ join-group 224.1.1.2 ip multicast-routing ip cgmp Then select multicast routing protocol: For PIM dense mode: Rlconfig-if ip pi
Trang 1MULTICASTING
Rl (config-if)
R1 (config)
R1 (config)
1Ð 1grĐ join-group 224.1.1.2
ip multicast-routing
ip cgmp
Then select multicast routing protocol:
For PIM dense mode:
Rl(config-if) ip pim dense mode
Sparse mode:
Rl (config-if)
Rl (config) ip
ip pim sparse-mode pim rp-address A.B.C.D
On Catalyst:
Set cgmop enable
Set cgmp multicast router <mod/port>
Show Show Show Show Show Show Show
ip pim interface 1Ð pim neighbor
ip mroute
ip mroute summary
ip mroute count ipo mroute active
ip igmop group
Additional Commands
For PIM auto-rp, interface config:
ip pim send-rp-announce loopback O scope 16
ip pim send-rp-discovery scope 16
Where loopback O is the announcing interface,
scope 16 is a TTL of 16 hops
Rp filter: ip pim accept-rp A.B.C.D or group-list 10
and
Tunnel for multicast only:
Interface tunnel 0
Ip unnumbered ethernet 0
Ip pim sparse-mode
Tunnel source ethernet 0
Tunnel destination A.B.C.D
Tunnel mode DVMRP
Over NBMA:
(config-if) ip pim nbma-mode
Spot The Issue
Notes
The two steps:
1 Define the ip multicast group to support in your multicast routing with the interface command: "ip igmop join-group 224.10.1.3"
2 Enable IP multicast routing in global configuration mode and define which multicast routing protocol to use Choices are:
e MOSPF'
° PIM
° DVMRP
Can PING the multicast address test multicast reacheability
(ex 224.1.1.10) to
Can use multiple auto RP machines, but priority goes to the highest advertised ip address (in the case above, would be the ip address on loopback 0