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详解BSCI实验五、配置PIM auto-rp

环境：三台路由器串口相连，其它的配置如图所示

要求：1. R1,R2,R3配置ospf 并把所有接口加入到area 0

2.配置R1为rp，配置R2为映射代理，把R3加入239.3.3.3组

3.练习本课所有show命令

步骤一：在每个路由器上配置1个loopback 口，并配置三台路由器接口使其连通。

R1的配置

R1(config)# interface Loopback0

R1(config-if)# ip address 30.1.1.1 255.255.255.0

R1(config)# interface Serial0

R1(config-if)# ip address 10.1.1 .1 255.255.255.0

R1(config-if)# clockrate 64000

R1(config-if)#no shutdown

R2的配置

R2(config)#interface Loopback0

R2(config-if)# ip address 40.1.1.1 255.255.255.0

R2(config)#interface Serial0

R2(config-if)# ip address 20.1.1 .1 255.255.255.0

R2(config-if)#clockrate 64000

R2(config-if)#no shutdown

R2(config)#interface Serial1

R2(config-if)# ip address 10.1.1 .2 255.255.255.0

R2(config-if)#no shutdown

R3的配置

R3(config)#interface Loopback0

R3(config-if)# ip address 50.1.1.1 255.255.255.0

R3(config)#interface Serial1

R3(config-if)# ip address 20.1.1 .2 255.255.255.0

R3(config-if)#no shutdown

步骤二：配置ospf路由协议，使其连通

R1的配置

R1(config)#router ospf 1

R1(config-router)# network 10.1.1 .0 0.0.0.255 area 0

R1(config-router)# network 30.1.1.0 0.0.0 .255 area 0

R2的配置

R2(config)#router ospf 1

R2(config-router)#network 10.1.1 .0 0.0.0.255 area 0

R2(config-router)# network 20.1.1 .0 0.0.0.255 area 0

R2(config-router)# network 40.1.1.0 0.0.0 .255 area 0

R3的配置

R3(config)#router ospf 1

R3(config-router)# network 20.1.1 .0 0.0.0.255 area 0

R3(config-router)# network 50.1.1.0 0.0.0 .255 area 0

步骤三：配置R1为rp，配置R2为映射代理，把R3加入239.3.3.3组

R1的配置

R1(config)#ip multicast-routing à启用多播协议

R1(config)# interface Loopback0

R1(config-if)# ip pim sparse-mode à接口PIM模式为稀疏

R1(config)# interface Serial0

R1(config-if)# ip pim sparse-mode

R1(config)# ip pim send-rp-announce Loopback0 scope 5 à指定R1为RP

R2的配置

R2(config)#ip multicast-routing

R2(config)# interface Loopback0

R2(config-if)# ip pim sparse-mode

R2(config)# interface Serial0

R2(config-if)# ip pim sparse-mode

R2(config)# interface Serial1

R2(config-if)# ip pim sparse-mode

R2(config)# ip pim send-rp-discovery Loopback0 scope 5 à将R2指定为映射代理

R3的配置

R3(config)#ip multicast-routing

R3(config)# interface Loopback0

R3(config-if)# ip pim sparse-mode

R3(config-if)# ip igmp join-group 239.3.3.3 à将此接口加入到组239.3.3.3

R3(config)# interface Serial1

R3(config-if)# ip pim sparse-mode

步骤四：查看组播路由表

R1#sh ip mroute 239.3.3.3

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

Y - Joined MDT-data group, y - Sending to MDT-data group

Outgoing interface flags: H - Hardware switched

Timers: Uptime/Expires

Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.3.3.3), 00:37:56/stopped, RP 30.1.1.1, flags: S

Incoming interface: Null, RPF nbr 0.0.0 .0

Outgoing interface list:

Serial0, Forward/Sparse, 00:37:56/00:03:07

( 10.1.1 .1, 239.3.3.3), 00:00:04/00:02:56, flags: P à学来对端的基于源的多播路由

Incoming interface: Serial0, RPF nbr 0.0.0 .0

Outgoing interface list: Null

(30.1.1.1, 239.3.3.3), 00:00:04/00:03:28, flags: T

Incoming interface: Loopback0, RPF nbr 0.0.0 .0

Outgoing interface list:

Serial0, Forward/Sparse, 00:00:05/00:03:24

(50.1.1.1, 239.3.3.3), 00:00:12/00:03:17, flags: PX

Incoming interface: Serial0, RPF nbr 10.1.1 .2

Outgoing interface list: Null

R2#sh ip mroute 239.3.3.3

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

Y - Joined MDT-data group, y - Sending to MDT-data group

Outgoing interface flags: H - Hardware switched

Timers: Uptime/Expires

Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.3.3.3), 00:43:06/stopped, RP 30.1.1.1, flags: SF

Incoming interface: Serial1, RPF nbr 10.1.1 .1

Outgoing interface list:

Serial0, Forward/Sparse, 00:42:48/00:03:02

( 20.1.1 .1, 239.3.3.3), 00:00:22/00:03:07, flags: T

Incoming interface: Serial0, RPF nbr 0.0.0 .0, Registering

Outgoing interface list:

Serial1, Forward/Sparse, 00:00:22/00:03:07

(40.1.1.1, 239.3.3.3), 00:00:23/00:03:08, flags: FT

Incoming interface: Loopback0, RPF nbr 0.0.0 .0, Registering

Outgoing interface list:

Serial0, Forward/Sparse, 00:00:24/00:03:06

(50.1.1.1, 239.3.3.3), 00:01:39/00:01:53, flags:

Incoming interface: Serial0, RPF nbr 20.1.1 .2

Outgoing interface list:

Serial1, Forward/Sparse, 00:01:39/00:01:53

R3#sh ip mroute 239.3.3.3

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

Y - Joined MDT-data group, y - Sending to MDT-data group

Outgoing interface flags: H - Hardware switched

Timers: Uptime/Expires

Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.3.3.3), 00:46:06/stopped, RP 30.1.1.1, flags: SJCLF

Incoming interface: Serial1, RPF nbr 20.1.1 .1

Outgoing interface list:

Loopback0, Forward/Sparse, 00:46:06/00:02:27

(50.1.1.1, 239.3.3.3), 00:03:54/00:03:06, flags: LFT

Incoming interface: Loopback0, RPF nbr 0.0.0 .0, Registering

Outgoing interface list:

Serial1, Forward/Sparse, 00:00:32/00:02:58

步骤五：查看接口组播信息

R1#sh ip pim int s0