07-IP组播配置举例

01-S12500_PIM-SM典型配置举例

1 简介

本文档介绍了PIM-SM配置举例。

PIM-SM（Protocol Independent Multicast-Sparse Mode，稀疏模式协议无关组播）属于稀疏模式的组播路由协议，使用“拉（Pull）模式”传送组播数据，通常适用于组播组成员分布相对分散、范围较广的大中型网络。

2 配置前提

本文档中的配置均是在实验室环境下进行的配置和验证，配置前设备的所有参数均采用出厂时的缺省配置。如果您已经对设备进行了配置，为了保证配置效果，请确认现有配置和以下举例中的配置不冲突。

本文假设您已了解PIM-SM特性。

3 配置举例

3.1 组网需求

如图1所示，三层交换机Switch A、Switch B和Switch C之间采用OSPF协议进行互连，单播路由正常。接收者通过组播方式接收视频点播信息，末梢用户网络N1、N2、N3中存在不同视频信息的接收者。

要求在该网络中采用PIM-SM协议实现组播数据的分发，并通过自举机制来动态选举RP，同时配置静态RP以避免动态RP故障而使通信中断。

图1 PIM-SM配置组网图

设备	接口	IP地址	设备	接口	IP地址
Switch A	Vlan-int100(GE3/0/1)	10.10.1.1/24	Switch C	Vlan-int102(GE3/0/1)	10.102.1.1/24
	Vlan-int12(GE3/0/2)	10.12.1.1/24		Vlan-int13(GE3/0/3)	10.13.1.3/24
	Vlan-int13(GE3/0/3)	10.13.1.1/24		Vlan-int23(GE3/0/2)	10.23.1.3/24
				Vlan-int33(GE3/0/4)	10.33.1.3/24
Switch B	Vlan-int101(GE3/0/1)	10.101.1.1/24
	Vlan-int12(GE3/0/2)	10.12.1.2/24
	Vlan-int23(GE3/0/3)	10.23.1.2/24

3.2 配置思路

· 为了确保一个C-RP故障时，另一个C-RP能够生效，将Switch A的VLAN接口12和Switch B的VLAN接口23均配置为C-RP，其中前者的优先级较高；同时为了确保上述两个接口都发生故障时静态RP能够生效，将Swtich C的VLAN接口13配置为静态RP。

· 为了能动态选举出RP，需要在Switch A和Switch B上配置C-BSR来自动选举产生BSR，以负责收集C-RP发来的宣告报文。

3.3 使用版本

本举例是在S12500-CMW710-R7129版本上进行配置和验证的。

3.4 配置注意事项

· 同一台设备所有接口上所使能的PIM模式必须相同。

· BSR和RP接口必须使能PIM-SM。

· 在边界设备连接用户网络的接口上必须使能IGMPv2功能，以建立和维护各组播组的成员关系。

3.5 配置步骤

3.5.1 Switch A的配置

(1) 使能组播路由功能

<SwitchA> system-view

System View: return to User View with Ctrl+Z.

[SwitchA] multicast routing-enable

(2) 配置各接口及接口地址，并使能PIM-SM

# 配置连接组播源的接口及接口地址，使能PIM-SM。

[SwitchA] vlan 100

[SwitchA-vlan100] port GigabitEthernet 3/0/1

[SwitchA-vlan100] quit

[SwitchA] interface Vlan-interface 100

[SwitchA-Vlan-interface100] ip address 10.10.1.1 24

[SwitchA-Vlan-interface100] pim sm

[SwitchA-Vlan-interface100] undo shutdown

[SwitchA-Vlan-interface100] quit

[SwitchA] interface GigabitEthernet 3/0/1

[SwitchA-GigabitEthernet3/0/1] undo shutdown

[SwitchA-GigabitEthernet3/0/1] quit

# 配置连接Switch B的接口及接口地址，使能PIM-SM。

[SwitchA] vlan 12

[SwitchA-vlan12] port GigabitEthernet 3/0/2

[SwitchA-vlan12] quit

[SwitchA-vlan12] interface Vlan-interface 12

[SwitchA-Vlan-interface12] ip address 10.12.1.1 24

[SwitchA-Vlan-interface12] pim sm

[SwitchA-Vlan-interface12] undo shutdown

[SwitchA-Vlan-interface12] quit

[SwitchA] interface GigabitEthernet 3/0/2

[SwitchA-GigabitEthernet3/0/2] undo shutdown

[SwitchA-GigabitEthernet3/0/2] quit

# 配置连接Switch C的接口及接口地址，使能PIM-SM。

[SwitchA] vlan 13

[SwitchA-vlan13] port GigabitEthernet 3/0/3

[SwitchA-vlan13] quit

[SwitchA] interface Vlan-interface 13

[SwitchA-Vlan-interface13] ip address 10.13.1.1 24

[SwitchA-Vlan-interface13] pim sm

[SwitchA-Vlan-interface13] undo shutdown

[SwitchA-Vlan-interface13] quit

[SwitchA] interface GigabitEthernet 3/0/3

[SwitchA-GigabitEthernet3/0/3] undo shutdown

[SwitchA-GigabitEthernet3/0/3] quit

(3) 配置C-RP和静态RP

# 指定VLAN接口12的IP地址为C-BSR和C-RP，其中C-RP的优先级为10。

[SwitchA] pim

[SwitchA-pim] c-bsr 10.12.1.1

[SwitchA-pim] c-rp 10.12.1.1 priority 10

# 指定Switch C的VLAN接口13的IP地址为静态RP的IP地址。

[SwitchA-pim] static-rp 10.13.1.3

[SwitchA-pim] quit

(4) 配置单播路由协议，以建立正确的单播路由表项

[SwitchA] ospf 1

[SwitchA-ospf-1] import-route direct

[SwitchA-ospf-1] area 0

[SwitchA-ospf-1-area-0.0.0.0] network 10.0.0.0 0.255.255.255

[SwitchA-ospf-1-area-0.0.0.0] quit

[SwitchA-ospf-1] quit

3.5.2 Switch B的配置

(1) 使能组播路由功能

<SwitchB> system-view

System View: return to User View with Ctrl+Z.

[SwitchB] multicast routing-enable

(2) 配置各接口及接口地址，并使能PIM-SM

# 配置连接Switch A的接口及接口地址，使能PIM-SM。

[SwitchB] vlan 12

[SwitchB-vlan12] port GigabitEthernet 3/0/2

[SwitchB-vlan12] quit

[SwitchB] interface Vlan-interface 12

[SwitchB-Vlan-interface12] ip address 10.12.1.2 24

[SwitchB-Vlan-interface12]pim sm

[SwitchB-Vlan-interface12] undo shutdown

[SwitchB-Vlan-interface12] quit

[SwitchB] interface GigabitEthernet 3/0/2

[SwitchB-GigabitEthernet3/0/2] undo shutdown

[SwitchB-GigabitEthernet3/0/2] quit

# 配置连接Switch C的接口及接口地址，使能PIM SM。

[SwitchB] vlan 23

[SwitchB-vlan23] port GigabitEthernet 3/0/3

[SwitchB-vlan23] quit

[SwitchB] interface Vlan-interface 23

[SwitchB-Vlan-interface23] ip address 10.23.1.2 24

[SwitchB-Vlan-interface23] pim sm

[SwitchB-Vlan-interface23] undo shutdown

[SwitchB-Vlan-interface23] quit

[SwitchB] interface GigabitEthernet 3/0/3

[SwitchB-GigabitEthernet3/0/3] undo shutdown

[SwitchB-GigabitEthernet3/0/3] quit

# 配置连接网络N1的接口及接口地址，使能PIM-SM和IGMP（缺省情况下，IGMP的版本为IGMPv2）。

[SwitchB] vlan 101

[SwitchB-vlan101] port GigabitEthernet 3/0/1

[SwitchB-vlan101] quit

[SwitchB] interface Vlan-interface 101

[SwitchB-Vlan-interface101] ip address 10.101.1.1 24

[SwitchB-Vlan-interface101] pim sm

[SwitchB-Vlan-interface101] igmp enable

[SwitchB-Vlan-interface101] undo shutdown

[SwitchB-Vlan-interface101] quit

[SwitchB] interface GigabitEthernet 3/0/1

[SwitchB-GigabitEthernet3/0/1] undo shutdown

[SwitchB-GigabitEthernet3/0/1] quit

(3) 配置C-RP和静态RP

# 指定VLAN接口23的IP地址为C-BSR和C-RP，其中C-RP的优先级为20。

[SwitchB] pim

[SwitchB-pim] c-bsr 10.23.1.2

[SwitchB-pim] c-rp 10.23.1.2 priority 20

# 指定Switch C的VLAN接口13的IP地址为静态RP的IP地址。

[SwitchB-pim] static-rp 10.13.1.3

[SwitchB-pim] quit

(4) 配置单播路由协议，以建立正确的单播路由表项

[SwitchB] ospf 1

[SwitchB-ospf-1] import-route direct

[SwitchB-ospf-1] area 0

[SwitchB-ospf-1-area-0.0.0.0] network 10.0.0.0 0.255.255.255

[SwitchB-ospf-1-area-0.0.0.0] quit

[SwitchB-ospf-1] quit

3.5.3 Switch C的配置

(1) 使能组播路由功能

<SwitchC> system-view

System View: return to User View with Ctrl+Z.

[SwitchC] multicast routing-enable

(2) 配置各接口及接口地址，并使能PIM-SM

# 配置连接Switch A的接口及接口地址，使能PIM-SM

[SwitchC] vlan 13

[SwitchC-vlan13] port GigabitEthernet 3/0/3

[SwitchC-vlan13] quit

[SwitchC] interface Vlan-interface 13

[SwitchC-Vlan-interface13] ip address 10.13.1.3 24

[SwitchC-Vlan-interface13] pim sm

[SwitchC-Vlan-interface13] undo shutdown

[SwitchC-Vlan-interface13] quit

[SwitchC] interface GigabitEthernet 3/0/3

[SwitchC-GigabitEthernet3/0/3] undo shutdown

[SwitchC-GigabitEthernet3/0/3] quit

# 配置连接Switch B的接口及接口地址，使能PIM-SM。

[SwitchC] vlan 23

[SwitchC-vlan23] port GigabitEthernet 3/0/2

[SwitchC-vlan23] quit

[SwitchC] interface Vlan-interface 23

[SwitchC-Vlan-interface23] ip address 10.23.1.3 24

[SwitchC-Vlan-interface23] pim sm

[SwitchC-Vlan-interface23] undo shutdown

[SwitchC-Vlan-interface23] quit

[SwitchC] interface GigabitEthernet 3/0/2

[SwitchC-GigabitEthernet3/0/2] undo shutdown

[SwitchC-GigabitEthernet3/0/2] quit

# 配置连接网络N2的接口及接口地址，使能PIM-SM和IGMP（缺省情况下，IGMP的版本为IGMPv2）。

[SwitchC] vlan 102

[SwitchC-vlan102] port GigabitEthernet 3/0/1

[SwitchC-vlan102] quit

[SwitchC] interface Vlan-interface 102

[SwitchC-Vlan-interface102] ip address 10.102.1.1 24

[SwitchC-Vlan-interface102] pim sm

[SwitchC-Vlan-interface102] igmp enable

[SwitchC-Vlan-interface102] undo shutdown

[SwitchC-Vlan-interface102] quit

[SwitchC] interface GigabitEthernet 3/0/1

[SwitchC-GigabitEthernet3/0/1] undo shutdown

[SwitchC-GigabitEthernet3/0/1] quit

# 配置连接网络N3的接口及接口地址，使能PIM-SM和IGMP（缺省情况下，IGMP的版本为IGMPv2）。

[SwitchC] vlan 33

[SwitchC-vlan33] port GigabitEthernet 3/0/4

[SwitchC-vlan33] quit

[SwitchC] interface Vlan-interface 33

[SwitchC-Vlan-interface33] ip address 10.33.1.3 24

[SwitchC-Vlan-interface33] pim sm

[SwitchC-Vlan-interface33] igmp enable

[SwitchC-Vlan-interface33] undo shutdown

[SwitchC-Vlan-interface33] quit

[SwitchC] interface GigabitEthernet 3/0/4

[SwitchC-GigabitEthernet3/0/4] undo shutdown

[SwitchC-GigabitEthernet3/0/4] quit

(3) 配置静态RP。指定VLAN接口13的IP地址为静态RP的IP地址

[SwitchC] pim

[SwitchC-pim] static-rp 10.13.1.3

[SwitchC-pim] quit

(4) 配置单播路由协议，以建立正确的单播路由表项

[SwitchC] ospf 1

[SwitchC-ospf-1] import-route direct

[SwitchC-ospf-1] area 0

[SwitchC-ospf-1-area-0.0.0.0] network 10.0.0.0 0.255.255.255

[SwitchC-ospf-1-area-0.0.0.0] quit

[SwitchC-ospf-1] quit

3.6 验证配置

(1) 按照如上配置后，查看配置信息发现Switch A、Switch B、Switch C两两之间建立PIM邻居关系。

# 查看Switch A上的PIM邻居信息。

[SwtichA] display pim neighbor

Total Number of Neighbors = 2

Neighbor Interface Uptime Expires Dr-Priority

10.12.1.2 Vlan12 00:15:48 00:01:20 1

10.13.1.3 Vlan13 00:00:25 00:01:21 1

# 查看Switch B上的PIM邻居信息。

[SwitchB] display pim neighbor

Total Number of Neighbors = 2

Neighbor Interface Uptime Expires DR-Priority

10.12.1.1 Vlan12 00:15:48 00:01:27 1

10.23.1.3 Vlan23 00:07:37 00:01:30 1

# 查看Switch C上的PIM邻居信息。

[SwtichC] display pim neighbor

Total Number of Neighbors = 2

Neighbor Interface Uptime Expires Dr-Priority

10.13.1.1 Vlan13 00:00:25 00:01:30 1

10.23.1.2 Vlan23 00:07:37 00:01:31 1

(2) 通过使用display pim bsr-info命令可以查看PIM-SM域中的BSR信息。

# 查看Switch A上PIM-SM域中的BSR信息。

[SwitchA] display pim bsr-info

Scope: non-scoped

State: Elected

Bootstrap timer: 00:01:44

Elected BSR address: 10.13.1.1

Priority: 64

Hash mask length: 30

Uptime: 00:01:18

Candidate BSR address: 10.23.1.2

Priority: 64

Hash mask length: 30

# 查看Switch B上PIM-SM域中的BSR信息。

[SwitchB] display pim bsr-info

Scope: non-scoped

State: Candidate

Bootstrap timer: 00:01:44

Elected BSR address: 10.12.1.1

Priority: 64

Hash mask length: 30

Uptime: 00:05:26

Candidate BSR address: 10.23.1.2

Priority: 64

Hash mask length: 30

# 查看Switch C上PIM-SM域中的BSR信息。

[SwitchC] display pim bsr-info

Scope: non-scoped

State: Accept Preferred

Bootstrap timer: 00:01:44

Elected BSR address: 10.12.1.1

Priority: 64

Hash mask length: 30

Uptime: 00:40:40

(3) 通过使用display pim rp-info命令可以查看PIM-SM域中的RP信息。

# 查看Switch A上所有组播组对应的RP信息。

[SwitchA] display pim rp-info

BSR RP information:

Scope: non-scoped

Group/MaskLen: 224.0.0.0/4

RP address Priority HoldTime Uptime Expires

10.12.1.1 (local) 10 150 00:51:45 00:02:22

10.23.1.2 20 150 00:51:45 00:02:22

Static RP information:

RP address ACL Mode Preferred

10.13.1.3 ---- pim-sm No

# 查看Switch B上所有组播组对应的RP信息。

[SwitchB] display pim rp-info

BSR RP information:

Scope: non-scoped

Group/MaskLen: 224.0.0.0/4

RP address Priority HoldTime Uptime Expires

10.12.1.1 10 150 00:51:45 00:02:22

10.23.1.2 (local) 20 150 00:51:45 00:02:22

Static RP information:

RP address ACL Mode Preferred

10.13.1.3 ---- pim-sm No

# 查看Switch C上所有组播组对应的RP信息。

[SwitchC] display pim rp-info

BSR RP information:

Scope: non-scoped

Group/MaskLen: 224.0.0.0/4

RP address Priority HoldTime Uptime Expires

10.12.1.1 10 150 00:51:45 00:02:22

10.23.1.2 20 150 00:51:45 00:02:22

Static RP information:

RP address ACL Mode Preferred

10.13.1.3 ---- pim-sm No

(4) 查看交换机的PIM路由表信息

# Host A指定加入组播组G（225.1.1.1）后，查看Switch B上的PIM路由表信息，可以看出具体的（S，G）表项，（*，G）与（S，G）表项总数、PIM的模式、入接口、上游邻居、RPF邻居和下游接口信息。

[SwitchB] display pim routing-table

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

(*, 225.1.1.1)

RP: 10.13.1.1

Protocol: pim-sm, Flag: WC

UpTime: 00:00:43

Upstream interface: Vlan-interface12

Upstream neighbor: 10.12.1.1

RPF prime neighbor: 10.12.1.1

Downstream interface(s) information:

Total number of downstreams: 1

1: Vlan-interface101

Protocol: igmp, UpTime: 00:00:43, Expires: -

(10.10.1.2, 225.1.1.1)

RP: 10.13.1.1

Protocol: pim-sm, Flag: SPT ACT

UpTime: 00:02:26

Upstream interface: Vlan-interface12

Upstream neighbor: 10.12.1.1

RPF prime neighbor: 10.12.1.1

Downstream interface(s) information:

Total number of downstreams: 1

1: Vlan-interface101

Protocol: pim-sm, UpTime: 00:02:06, Expires: -

Switch A、Switch C上的显示信息与Switch B类似。

3.7 配置文件

· Switch A

vlan 12 to 13

vlan 100

multicast routing-enable

interface Vlan-interface12

ip address 10.12.1.1 255.255.255.0

pim sm

interface Vlan-interface13

ip address 10.13.1.1 255.255.255.0

pim sm

interface Vlan-interface100

ip address 10.10.1.1 255.255.255.0

pim sm

interface GigabitEthernet3/0/1

port link-mode bridge

port access vlan 100

interface GigabitEthernet3/0/2

port link-mode bridge

port access vlan 12

interface GigabitEthernet3/0/3

port link-mode bridge

port access vlan 13

ospf 1

import-route direct

area 0.0.0.0

network 10.0.0.0 0.255.255.255

pim

c-bsr 10.12.1.1

c-rp 10.12.1.1 priority 10

static-rp 10.13.1.3

· Switch B

vlan 12

vlan 23

vlan 101

multicast routing-enable

interface Vlan-interface12

ip address 10.12.1.2 255.255.255.0

pim sm

interface Vlan-interface23

ip address 10.23.1.2 255.255.255.0

pim sm

interface Vlan-interface101

ip address 10.101.1.1 255.255.255.0

igmp enable

pim sm

interface GigabitEthernet3/0/1

port link-mode bridge

port access vlan 101

interface GigabitEthernet3/0/2

port link-mode bridge

port access vlan 12

interface GigabitEthernet3/0/3

port link-mode bridge

port access vlan 23

ospf 1

import-route direct

area 0.0.0.0

network 10.0.0.0 0.255.255.255

pim

c-bsr 10.23.1.2

c-rp 10.23.1.2 priority 20

static-rp 10.13.1.3

· Switch C

vlan 13

vlan 23

vlan33

vlan 102

multicast routing-enable

interface Vlan-interface13

ip address 10.13.1.3 255.255.255.0

pim sm

interface Vlan-interface23

ip address 10.23.1.3 255.255.255.0

pim sm

interface Vlan-interface33

ip address 10.33.1.3 255.255.255.0

igmp enable

pim sm

interface Vlan-interface102

ip address 10.102.1.1 255.255.255.0

igmp enable

pim sm

interface GigabitEthernet3/0/1

port link-mode bridge

port access vlan 102

interface GigabitEthernet3/0/2

port link-mode bridge

port access vlan 23

interface GigabitEthernet3/0/3

port link-mode bridge

port access vlan 13

interface GigabitEthernet3/0/4

port link-mode bridge

port access vlan 33

ospf 1

import-route direct

area 0.0.0.0

network 10.0.0.0 0.255.255.255

pim

static-rp 10.13.1.3

4 相关资料

· 《H3C S12500系列路由交换机 IP组播配置指导》中的“PIM”

· 《H3C S12500系列路由交换机 IP组播命令参考》中的“PIM”

不同款型规格的资料略有差异, 详细信息请向具体销售和400咨询。H3C保留在没有任何通知或提示的情况下对资料内容进行修改的权利!

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07-IP组播配置举例

目录

01-S12500_PIM-SM典型配置举例

2 配置前提

3 配置举例

3.2 配置思路

3.5.1 Switch A的配置

3.5.2 Switch B的配置

3.5.3 Switch C的配置

3.7 配置文件

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