组播实验怎么做？看这篇就够了！文末有惊喜！

乾颐堂

                               
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1.PIM DM实验

2.IGMPv1-v3实验，可以观察IGMP报文

3.PIM SM静态实验

4.PIM SM动态实验

                               
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配置IP地址，PIM部分路由器IGP互联。

[R4]multicast routing-enable

[R4-GigabitEthernet0/0/2]igmp enable

PC1点击组播加组

[R4]dis igmp routing-table

Routing table of VPN-Instance: public net

Total 1 entry

00001. (*, 239.1.1.1)

       List of 1 downstream interface

        GigabitEthernet0/0/2 (192.168.1.1),

                   Protocol: IGMP

开启PIM-DM

[R1]multicast routing-enable

[R1-GigabitEthernet0/0/0]pim dm

[R1-GigabitEthernet0/0/2]pim dm

[R2]multicast routing-enable

[R2-GigabitEthernet0/0/0]pim dm

[R2-GigabitEthernet0/0/1]pim dm

[R2-GigabitEthernet0/0/2]pim dm

[R4-GigabitEthernet0/0/0]pim dm

[R4-GigabitEthernet0/0/1]pim dm

[R3]multicast routing-enable

[R3-GigabitEthernet0/0/0]pim dm

[R3-GigabitEthernet0/0/1]igmp enable

<R4>dis pim routing-table   //查看pim对于的表项

VPN-Instance: public net

Total 1 (*, G) entry; 1 (S, G) entry

(*, 239.1.1.1)

     Protocol: pim-dm, Flag: WC EXT

     UpTime: 00:20:44

     Upstream interface: NULL

         Upstream neighbor: NULL

         RPF prime neighbor: NULL

     Downstream interface(s) information: None

(172.16.1.100, 239.1.1.1)

     Protocol: pim-dm, Flag: EXT ACT

     UpTime: 00:03:39

     Upstream interface: GigabitEthernet0/0/1

         Upstream neighbor: 24.1.1.2

         RPF prime neighbor: 24.1.1.2

     Downstream interface(s) information: None

                               
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加入组后，启动vcl，接收到组播流量。

查看IGMPv1报文实验

[R4-GigabitEthernet0/0/2]undo igmp enable   //开启pim需要先关闭igmp

[R4-GigabitEthernet0/0/2]pim dm

[R4-GigabitEthernet0/0/2]igmp enable

[R4-GigabitEthernet0/0/2]igmp version 1

<R4>dis igmp interface g0/0/2    //查看接口0/0/2的igmp信息

Interface information of VPN-Instance: public net

GigabitEthernet0/0/2(192.168.1.1):

IGMP is enabled

Current IGMP version is 1

IGMP state: up

IGMP group policy: none

IGMP limit: -

Value of query interval for IGMP (negotiated): -

Value of query interval for IGMP (configured): 60 s

Value of other querier timeout for IGMP: 0 s

Value of maximum query response time for IGMP: -

Querier for IGMP: 192.168.1.1 (this router)

Total 1 IGMP Group reported

IGMP查询器，依靠pim协议hello报文选举。

1.PIM hello报文

                               
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2.普遍组查询报文

                               
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3.成员关系报告报文

                               
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查看IGMPv2报文实验

默认版本为v2

特定组查询报文

                               
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成员关系报告报文

                               
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离开报文

                               
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查看IGMPv3报文实验

添加组播源IP

                               
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PIM SM

静态RP

所有pim路由器创建环回口，且都igp互通。

设置R2为RP

[R2-LoopBack0]ip address 3.3.3.3 32

[R2-pim]static-rp 2.2.2.2

[R1-LoopBack0]ip address 1.1.1.1 32

[R1-pim]static-rp 2.2.2.2

[R3-LoopBack0]ip address 3.3.3.3 32

[R3-pim]static-rp 2.2.2.2

[R4-LoopBack0]ip address 4.4.4.4 32

[R4-pim]static-rp 2.2.2.2

[R2-pim]dis pim routing-table

VPN-Instance: public net

Total 1 (*, G) entry; 1 (S, G) entry

(*, 239.1.1.1)

     RP: 2.2.2.2 (local)

     Protocol: pim-sm, Flag: WC

     UpTime: 00:00:27

     Upstream interface: Register

         Upstream neighbor: NULL

         RPF prime neighbor: NULL

     Downstream interface(s) information:

     Total number of downstreams: 1

         1: GigabitEthernet0/0/2

             Protocol: pim-sm, UpTime: 00:00:27, Expires: 00:03:03

(172.16.1.100, 239.1.1.1)

     RP: 2.2.2.2 (local)

     Protocol: pim-sm, Flag: SPT 2MSDP ACT

     UpTime: 00:00:03

     Upstream interface: GigabitEthernet0/0/0

         Upstream neighbor: 13.1.1.1

         RPF prime neighbor: 13.1.1.1

     Downstream interface(s) information:

     Total number of downstreams: 1

         1: GigabitEthernet0/0/2

             Protocol: pim-sm, UpTime: 00:00:03, Expires: -

动态RP

[R2-LoopBack0]pim sm          //动态的方式的话选举RP，需要环回接口也开启PIM SM模式

[R2-pim]c-bsr priority 100    //通过控制C-BSR的优先级，选举成为正式的BSR

[R2-pim]c-bsr LoopBack 0

[R1-LoopBack0]pim sm

[R1-pim]c-bsr LoopBack 0

[R3-LoopBack0]pim sm

[R3-pim]c-bsr LoopBack 0

[R4-LoopBack0]pim sm

[R4-pim]c-bsr LoopBack 0

[R2-pim]dis pim bsr-info   //查看bsr信息

VPN-Instance: public net

Elected AdminScoped BSR Count: 0

Elected BSR Address: 2.2.2.2

     Priority: 100

     Hash mask length: 30

     State: Elected

     Scope: Not scoped

     Uptime: 00:06:07

     Next BSR message scheduled at: 00:00:53

     C-RP Count: 0

Candidate AdminScoped BSR Count: 0

Candidate BSR Address: 2.2.2.2

     Priority: 100

     Hash mask length: 30

     State: Elected

     Scope: Not scoped

     Wait to be BSR: 0

     

     

[R1-pim]c-rp LoopBack 0

[R2-pim]c-rp LoopBack 0

[R3-pim]c-rp LoopBack 0

[R4-pim]c-rp LoopBack 0

[R2-pim]dis pim rp-info

VPN-Instance: public net

PIM-SM BSR RP Number:4

Group/MaskLen: 224.0.0.0/4

     RP: 1.1.1.1

     Priority: 0

     Uptime: 00:02:21

     Expires: 00:02:09

Group/MaskLen: 224.0.0.0/4

     RP: 2.2.2.2 (local)

     Priority: 0

     Uptime: 00:02:14

     Expires: 00:02:16

Group/MaskLen: 224.0.0.0/4

     RP: 3.3.3.3

     Priority: 0

     Uptime: 00:02:11

     Expires: 00:02:19

Group/MaskLen: 224.0.0.0/4

     RP: 4.4.4.4

     Priority: 0

     Uptime: 00:02:08

     Expires: 00:02:22

PIM SM static RP Number:1

     Static RP: 2.2.2.2 (local)

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