看图
我们下完成初始配置,我们用r1模拟多播源，r5模拟pc
source配置：nterface Serial0/0
ip address 192.168.1.1 255.255.255.0
serial restart-delay 0
clock rate 64000
!
interface Serial0/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
ip http server
ip route 0.0.0.0 0.0.0.0 192.168.1.
r2配置;interface Serial0/0
ip address 192.168.1.2 255.255.255.0
serial restart-delay 0
!
interface Serial0/1
ip address 192.168.2.2 255.255.255.0
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router eigrp 100
network 2.2.2.0 0.0.0.255
network 192.168.1.0
network 192.168.2.0
auto-summary
r3配置;!
interface Loopback0
ip address 3.3.3.3 255.255.255.0
!
interface Serial0/0
ip address 192.168.3.3 255.255.255.0
serial restart-delay 0
!
interface Serial0/1
ip address 192.168.2.3 255.255.255.0
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router eigrp 100
network 3.3.3.0 0.0.0.255
network 192.168.2.0
network 192.168.3.0
auto-summary
r4配置：interface Serial0/0
ip address 192.168.3.4 255.255.255.0
serial restart-delay 0
!
interface Serial0/1
ip address 192.168.4.4 255.255.255.0
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router eigrp 100
network 4.4.4.0 0.0.0.255
network 192.168.3.0
network 192.168.4.0
auto-summary
r5;interface Serial0/1
ip address 192.168.4.5 255.255.255.0
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
ip http server
ip route 0.0.0.0 0.0.0.0 192.168.4.4
在source ping pc：
source#ping 192.168.4.5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.4.5, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/55/104 ms
基本配置完成
我们把r3配置为maping agent r2 r4 配置为 候选路由
source(config)#ip pim autorp listener
source(config)#ip multicast-routing
source(config)#int s0/0
source(config-if)#ip pim sparse-mode
source(config)#ip igmp snooping
r2(config)#ip pim autorp listener
r2(config)#ip multicast-routing
r2(config)#int s0/0
r2(config-if)#ip pim sparse-mode
r2(config)#int s0/1
r2(config-if)#ip pim sparse-mode
r2(config)#ip igmp snooping
r2(config)#int lo 0
r2(config-if)#ip pim sparse-mode
r2(config)#ip pim send-rp-announce lo 0 scope 10 group-list 1
r2(config)#access-list 1 permit 224.0.0.0 255.255.255.0
r3(config)#int lo 0
r3(config-if)#ip pim sp
r3(config-if)#ip pim sparse-mo
r3(config-if)#int s0/1
r3(config-if)#ip pim sp m
r3(config)#ip pim autorp l
r3(config-if)#ip pim sparse-mode
r3(config-if)#int s0/1
r3(config-if)#ip pim sp m
r3(config)#ip pim send-rp-discovery lo 0 scope 10
r4(config)#ip pim send-rp-announce lo 0 scope 10 group-list 1
r4(config)#access-list 1 permit 224.0.0.0 0.255.255.255.0
r4(config)#int lo 0
r4(config-if)#ip pim sp
r4(config-if)#ip pim sparse-mo
pc(config)#ip pim autorp l
pc(config-if)#ip igmp join-group 224.1.1.1
我们先检测下pim邻居关系;
r2#show ip pim neighbor
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
S - State Refresh Capable
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
192.168.1.1 Serial0/0 00:06:38/00:01:29 v2 1 / S
192.168.2.3 Serial0/1 00:05:23/00:01:17 v2 1 / S
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
S - State Refresh Capable
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
192.168.3.4 Serial0/0 00:31:22/00:01:22 v2 1 / S
192.168.2.2 Serial0/1 00:31:43/00:01:30 v2 1 / S
邻居关系正确我们在ping下224.0.0.1
source#ping 224.1.1.1
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds:
Reply to request 0 from 192.168.4.5, 352 ms
成功！
我们看下多播路由表;
r4#show ip mroute
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report,
Z - Multicast Tunnel, z - MDT-data group sender,
Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 224.1.1.1), 00:31:54/00:02:16, RP 0.0.0.0, flags: SJC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/1, Forward/Sparse, 00:31:54/00:02:16
(*, 224.0.1.39), 00:17:44/stopped, RP 0.0.0.0, flags: D
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0, Forward/Sparse, 00:17:44/00:00:00
(2.2.2.2, 224.0.1.39), 00:01:34/00:01:25, flags: PT
Incoming interface: Serial0/0, RPF nbr 192.168.3.3
Outgoing interface list: Null
(4.4.4.4, 224.0.1.39), 00:15:00/00:02:01, flags: T
Incoming interface: Loopback0, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0, Forward/Sparse, 00:15:00/00:00:00
(*, 224.0.1.40), 00:33:16/stopped, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0, Forward/Sparse, 00:33:16/00:00:00
发现这是基于源树分发的！ 结束！
下面是多播的一些要点
ip igmp join-group 224.1.1.1
ip pim autorp listener
本文转自q狼的诱惑 51CTO博客，原文链接：http://blog.51cto.com/liangrui/414291，如需转载请自行联系原作者
