07-IP组播配置举例

02-H3C S12500 PIM-SSM典型配置举例

H3C S12500 PIM-SSM配置举例

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1 简介

本文档介绍了PIM-SSM配置举例。

SSM（Source-Specific Multicast，指定信源组播）模型为指定源组播提供了解决方案。在PIM-SSM网络中，在IGMPv3的支持下，接收者在加入某组播组G的同时，能够明确要求接收来自某特定组播源S的组播信息。由于接收者已经通过其它渠道（如广告咨询等）知道了组播源的具体位置，因此在SSM模型中无需RP，无需构建RPT，无需源注册过程，也无需通过MSDP（Multicast Source Discovery Protocol，组播源发现协议）来发现其它PIM域内的组播源。

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-SSM特性。

3 配置举例

3.1 组网需求

如图1所示，三层交换机SwitchA、SwitchB和SwitchC之间采用OSPF协议进行互连，单播路由正常。末梢用户网络N1、N2、N3中都存在视频信息的点播者。

要求在该网络中采用PIM-SSM协议构建组播数据分发树，以保证接收者可加入SSM组地址为225.0.0.0/8范围内的组播组，且能够指定接收特定组播源发来的组播数据。

图1 PIM-SSM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
Switch B	Vlan-int101(GE3/0/1)	10.101.1.1/24		Vlan-int33(GE3/0/4)	10.33.1.3/24
	Vlan-int12(GE3/0/2)	10.12.1.2/24
	Vlan-int23(GE3/0/3)	10.23.1.2/24

3.2 使用版本

本举例是在S12500-CMW520-R1825P01版本上进行配置和验证的。

3.3 配置注意事项

· PIM-SSM模型需要IGMPv3的支持，因此应确保连接有接收者的PIM设备上使能了IGMPv3，且要求接收者主机也要运行IGMPv3。

· 应确保域内所有路由器上配置的SSM组播组地址范围都一致，否则组播信息将无法通过SSM模型进行传输。如果没有配置SSM的组地址，缺省为232.0.0.0～232.255.255.255。

· 若要实现主机既能加入SSM地址范围内的组播组，又能加入SSM地址范围外的组播组，可在PIM-SSM网络中配置RP及BSR，实现PIM-SM即可。

· 设备目前不支持组播组成员以exclude模式加入组播组。

3.4 配置步骤

3.4.1 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 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SwitchB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] interface vlan 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SwitchC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 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SSM组地址范围为225.0.0.0/8

[SwitchA] acl number 2000

[SwitchA-acl-basic-2000] rule permit source 225.0.0.0 0.255.255.255

[SwitchA-acl-basic-2000] quit

[SwitchA] pim

[SwitchA-pim] ssm-policy 2000

[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 0.0.0.0

[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

3.4.2 Switch B的配置

(1) 使能组播路由功能

<SwitchB> system-view

[SwtichB] multicast routing-enable

(2) 配置各接口及接口地址，并使能PIM-SM

# 配置连接SwtichA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 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SwtichC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 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IGMPv3。

[SwitchB] vlan 101

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

[SwitchB-vlan101] quit

[SwitchB] interface vlan 101

[SwitchB-Vlan-interface101] ip address 10.101.1.1 24

[SwitchB-Vlan-interface101] pim sm

[SwitchB-Vlan-interface101] igmp enable

[SwitchB-Vlan-interface101] igmp version 3

[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SSM组地址范围为225.0.0.0/8

[SwitchB] acl number 2000

[SwitchB-acl-basic-2000] rule permit source 225.0.0.0 0.255.255.255

[SwitchB-acl-basic-2000] pim

[SwitchB-pim] ssm-policy 2000

[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 0.0.0.0

[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

3.4.3 Switch C的配置

(1) 使能组播路由功能

<SwitchC> system-view

[SwtichC] multicast routing-enable

(2) 配置各接口及接口地址，并使能PIM-SM

# 配置连接SwtichA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 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SwtichB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 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IGMPv3协议。

[SwitchC] vlan 102

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

[SwitchC-vlan102] quit

[SwitchC] interface vlan 102

[SwitchC-Vlan-interface102] ip address 10.102.1.1 24

[SwitchC-Vlan-interface102] pim sm

[SwitchC-Vlan-interface102] igmp enable

[SwitchC-Vlan-interface102] igmp version 3

[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IGMPv3协议。

[SwitchC] vlan 33

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

[SwitchC-vlan33] quit

[SwitchC] interface vlan 33

[SwitchC-Vlan-interface33] ip address 10.33.1.3 24

[SwitchC-Vlan-interface33] pim sm

[SwitchC-Vlan-interface33] igmp enable

[SwitchC-Vlan-interface33] igmp version 3

[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SSM组地址范围为225.0.0.0/8

[SwitchC] acl number 2000

[SwitchC-acl-basic-2000] rule permit source 225.0.0.0 0.255.255.255

[SwitchC-acl-basic-2000] pim

[SwitchC-pim] ssm-policy 2000

(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 0.0.0.0

[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

3.5 验证配置

(1) 按照如上配置后，查看配置信息发现SwitchA、SwitchB、SwitchC两两之间建立了PIM邻居关系。

# 查看SwitchA上的PIM邻居信息。

[SwtichA] display pim neighbor

VPN-Instance: public net

Total Number of Neighbors = 2

Neighbor Interface Uptime Expires Dr-Priority Mode

10.12.1.2 Vlan12 00:00:05 00:01:20 1

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

# 查看SwitchB上的PIM邻居信息。

[SwtichB] display pim neighbor

VPN-Instance: public net

Total Number of Neighbors = 2

Neighbor Interface Uptime Expires Dr-Priority Mode

10.12.1.1 Vlan12 00:00:05 00:01:40 1

10.23.1.3 Vlan23 00:00:20 00:01:41 1

# 查看SwitchC上的PIM邻居信息。

[SwtichC] display pim neighbor

VPN-Instance: public net

Total Number of Neighbors = 2

Neighbor Interface Uptime Expires Dr-Priority Mode

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

10.23.1.2 Vlan23 00:00:20 00:01:31 1

(2) 查看交换机上的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

VPN-Instance: public net

Total 0 (*, G) entry; 1 (S, G) entry

(10.10.1.2, 225.1.1.1)

Protocol: pim-ssm, Flag:

UpTime: 00:14:24

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: 00:14:24, Expires: -

Switch A、Switch C上的显示信息与Switch B类似。

3.6 配置文件

· Switch A

vlan 12 to 13

vlan 100

multicast routing-enable

acl number 2000

rule permit source 225.0.0.0 0.255.255.255

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

ssm-policy 2000

· Switch B

vlan 12

vlan 23

vlan 101

multicast routing-enable

acl number 2000

rule permit source 225.0.0.0 0.255.255.255

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

igmp version 3

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

ssm-policy 2000

· Switch C

vlan 13

vlan 23

vlan33

vlan 102

multicast routing-enable

acl number 2000

rule permit source 225.0.0.0 0.255.255.255

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

igmp version 3

pim sm

interface Vlan-interface102

ip address 10.102.1.1 255.255.255.0

igmp enable

igmp version 3

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

ssm-policy 2000

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

02-H3C S12500 PIM-SSM典型配置举例

3.2 使用版本

3.4.1 Switch A的配置

3.4.2 Switch B的配置

3.4.3 Switch C的配置

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