Posted in: Huawei CE8850

配置双向PIM与PIM-SM共存示例

配置双向PIM与PIM-SM共存示例

组网需求

在如图4-30所示的网络中,HostA希望通过双向PIM协议接收组播组225.1.1.1的信息,HostB希望通过PIM-SM协议接收组播组226.1.1.1的信息。

图4-30 配置双向PIM与PIM-SM共存组网图
file

配置思路

在SwitchA上分别配置为双向PIM和PIM-SM服务的动态RP,并通过ACL规则指定动态RP服务的组播组范围,可以实现双向PIM与PIM-SM在同一网络中共存。具体配置思路如下:

  1. 配置各交换机的接口IP地址和单播路由协议。
  2. 在所有提供组播服务的交换机上使能组播路由。
  3. 在所有提供组播服务的交换机上使能双向PIM功能。
  4. 在组播交换机的所有接口上使能PIM-SM。
  5. 在与主机直连的交换机接口上使能IGMP。
  6. 配置动态RP。在SwitchA上分别配置为双向PIM服务和为PIM-SM服务的动态RP,并配置ACL过滤规则,分别匹配双向PIM和PIM-SM的RP服务的组播组范围。

操作步骤

  1. 配置各交换机的接口IP地址和单播路由协议。

    按照图4-30配置各交换机接口的IP地址和掩码,配置各交换机间采用OSPF进行互连,确保网络中各交换机间能够在网络层互通,并且之间能够借助单播路由协议实现动态路由更新。

    # 配置SwitchA的接口加入VLAN。SwitchB和SwitchC的配置与SwitchA相似,配置过程略。

    system-view
    [~HUAWEI] sysname SwitchA
    [*HUAWEI] commit
    [~SwitchA] vlan batch 30 100 200
    [*SwitchA] interface 10ge 1/0/1
    [*SwitchA-10GE1/0/1] port default vlan 30
    [*SwitchA-10GE1/0/1] quit
    [*SwitchA] interface 10ge 1/0/2
    [*SwitchA-10GE1/0/2] port link-type trunk
    [*SwitchA-10GE1/0/2] port trunk allow-pass vlan 100
    [*SwitchA-10GE1/0/2] quit
    [*SwitchA] interface 10ge 1/0/3
    [*SwitchA-10GE1/0/3] port link-type trunk
    [*SwitchA-10GE1/0/3] port trunk allow-pass vlan 200
    [*SwitchA-10GE1/0/3] quit
    [*SwitchA] commit

    # 配置SwitchA上接口的IP地址。SwitchB和SwitchC的配置与SwitchA相似,配置过程略。

    [~SwitchA] interface vlanif 30
    [*SwitchA-Vlanif30] ip address 10.110.3.1 24
    [*SwitchA-Vlanif30] quit
    [*SwitchA] interface vlanif 100
    [*SwitchA-Vlanif100] ip address 192.168.2.1 24
    [*SwitchA-Vlanif100] quit
    [*SwitchA] interface vlanif 200
    [*SwitchA-Vlanif200] ip address 192.168.3.1 24
    [*SwitchA-Vlanif200] quit
    [*SwitchA] interface loopback0
    [*SwitchA-LoopBack0] ip address 10.1.1.1 32
    [*SwitchA-LoopBack0] quit
    [*SwitchA] commit

    # 配置SwitchA上的单播路由协议OSPF。SwitchB和SwitchC的配置与SwitchA相似,配置过程略。

    [~SwitchA] router id 10.1.1.1
    [*SwitchA] ospf
    [*SwitchA-ospf-1] area 0
    [*SwitchA-ospf-1-area-0.0.0.0] network 10.110.3.0 0.0.0.255
    [*SwitchA-ospf-1-area-0.0.0.0] network 192.168.2.0 0.0.0.255
    [*SwitchA-ospf-1-area-0.0.0.0] network 192.168.3.0 0.0.0.255
    [*SwitchA-ospf-1-area-0.0.0.0] network 10.1.1.1 0.0.0.0
    [*SwitchA-ospf-1-area-0.0.0.0] commit
    [~SwitchA-ospf-1-area-0.0.0.0] quit
    [~SwitchA-ospf-1] quit
  2. 在各交换机上使能组播功能和双向PIM功能。

    # 使能SwitchA的组播功能和双向PIM功能。SwitchB和SwitchC的配置与SwitchA相似,配置过程略。

    [~SwitchA] multicast routing-enable
    [*SwitchA] pim
    [*SwitchA-pim] bidir-pim
    [*SwitchA-pim] commit
    [~SwitchA-pim] quit
  3. 在各交换机接口上使能PIM-SM功能。

    # 使能SwitchA的各接口PIM-SM功能。SwitchB和SwitchC的配置与SwitchA相似,配置过程略。

    [~SwitchA] interface vlanif 30
    [~SwitchA-Vlanif30] pim sm
    [*SwitchA-Vlanif30] quit
    [*SwitchA] interface vlanif 100
    [*SwitchA-Vlanif100] pim sm
    [*SwitchA-Vlanif100] quit
    [*SwitchA] interface vlanif 200
    [*SwitchA-Vlanif200] pim sm
    [*SwitchA-Vlanif200] quit
    [*SwitchA] interface loopback0
    [*SwitchA-LoopBack0] pim sm
    [*SwitchA-LoopBack0] quit
    [*SwitchA] commit
  4. 在连接用户主机的接口上使能IGMP。

    # 配置SwitchB。

    [~SwitchB] interface vlanif 10
    [~SwitchB-Vlanif10] igmp enable
    [*SwitchB-Vlanif10] commit
    [~SwitchB-Vlanif10] quit

    # 配置SwitchC。

    [~SwitchC] interface vlanif 20
    [~SwitchC-Vlanif20] igmp enable
    [*SwitchC-Vlanif20] commit
    [~SwitchC-Vlanif20] quit
  5. 配置动态RP。

    # 在SwitchA上配置不同的C-RP接口为不同的PIM协议服务。

    [~SwitchA] acl number 2000
    [*SwitchA-acl4-basic-2000] rule permit source 225.1.1.0 0.0.0.255
    [*SwitchA-acl4-basic-2000] quit
    [*SwitchA] acl number 2001
    [*SwitchA-acl4-basic-2001] rule permit source 226.1.1.0 0.0.0.255
    [*SwitchA-acl4-basic-2001] quit
    [*SwitchA] pim
    [*SwitchA-pim] c-bsr vlanif30
    [*SwitchA-pim] c-rp loopback0 group-policy 2000 bidir
    [*SwitchA-pim] c-rp vlanif30 group-policy 2001
    [*SwitchA-pim] commit
    [~SwitchA-pim] quit
  6. 验证配置结果。

    # 使用display pim routing-table命令可以查看交换机上的PIM路由表。组播源(10.110.3.100/24)向组播组(225.1.1.1/24)、(226.1.1.1/24)发送信息,HostA加入了组播组(225.1.1.1/24),HostB加入了组播组(226.1.1.1/24)。例如SwitchA和SwitchB上的PIM路由表信息如下:

    [~SwitchA] display pim routing-table
    VPN-Instance: public net
    Total 2 (*, G) entries; 1 (S, G) entry
    
    (*, 226.1.1.1)
        RP: 10.110.3.1 (local)
        Protocol: pim-sm, Flag: WC
        UpTime: 03:05:41
        Upstream interface: Register
            Upstream neighbor: NULL
            RPF prime neighbor: NULL
        Downstream interface(s) information:
        Total number of downstreams: 1
           1: Vlanif200
                Protocol: pim-sm, UpTime: 03:05:41, Expires: 00:02:50
    
    (10.110.3.100, 226.1.1.1)
        RP: 10.110.3.1 (local)
        Protocol: pim-sm, Flag: SPT LOC ACT
        UpTime: 00:06:27
        Upstream interface: Vlanif30
            Upstream neighbor: NULL
            RPF prime neighbor: NULL
        Downstream interface(s) information:
        Total number of downstreams: 1
           1: Vlanif200
                Protocol: pim-sm, UpTime: 00:06:27, Expires: 00:03:04
    
    (*, 225.1.1.1)
        RP: 10.1.1.1 (local)
        Protocol: bidir-pim, Flag: WC ACT
        UpTime: 03:00:42
        Rpf interface: LoopBack0
            Upstream neighbor: NULL
        Downstream interface(s) information:
        Total number of downstreams: 2
           1: Vlanif100
                Protocol: bidir-pim, UpTime: 03:00:42, Expires: 00:02:48
           2: LoopBack0(RPF)
                Protocol: bidir-pim, UpTime: 03:00:42, Expires: -
    [~SwitchB] display pim routing-table
    VPN-Instance: public net
    Total 1 (*, G) entry; 0 (S, G) entry
    
    (*, 225.1.1.1)
        RP: 10.1.1.1
        Protocol: bidir-pim, Flag: WC ACT
        UpTime: 00:01:08
        Rpf interface: Vlanif100
            Upstream neighbor: 192.168.2.1
        Downstream interface(s) information:
        Total number of downstreams: 2
           1: Vlanif10
                Protocol: igmp, UpTime: 00:01:07, Expires: -
           2: Vlanif100(RPF)
                Protocol: bidir-pim, UpTime: 00:01:08, Expires: - 

    由显示信息可以看出,HostA通过双向PIM协议接收到了组播组225.1.1.1的信息、HostB通过PIM-SM协议接收到了组播组226.1.1.1的信息。

配置文件

  • SwitchA的配置文件

    #
    sysname SwitchA
    #
    vlan batch 30 100 200
    #
    router id 10.1.1.1
    #
    multicast routing-enable
    #
    acl number 2000
    rule 5 permit source 225.1.1.0 0.0.0.255
    #
    acl number 2001
    rule 5 permit source 226.1.1.0 0.0.0.255
    #
    interface Vlanif30
    ip address 10.110.3.1 255.255.255.0
    pim sm
    #
    interface Vlanif100
    ip address 192.168.2.1 255.255.255.0
    pim sm
    #
    interface Vlanif200
    ip address 192.168.3.1 255.255.255.0
    pim sm
    #
    interface 10GE1/0/1
    port default vlan 30
    #
    interface 10GE1/0/2
    port link-type trunk
    port trunk allow-pass vlan 100
    #
    interface 10GE1/0/3
    port link-type trunk
    port trunk allow-pass vlan 200
    #
    interface LoopBack0
    ip address 10.1.1.1 255.255.255.255
    pim sm
    #
    ospf 1
    area 0.0.0.0
    network 10.1.1.1 0.0.0.0
    network 10.110.3.0 0.0.0.255
    network 192.168.2.0 0.0.0.255
    network 192.168.3.0 0.0.0.255
    #
    pim
    c-bsr Vlanif30
    bidir-pim
    c-rp Vlanif30 group-policy 2001 
    c-rp LoopBack0 group-policy 2000 bidir
    #
    return
  • SwitchB的配置文件

    #
    sysname SwitchB
    #
    vlan batch 10 100
    #
    router id 10.2.2.2
    #
    multicast routing-enable
    #
    interface Vlanif10
    ip address 10.110.1.1 255.255.255.0
    pim sm
    igmp enable
    #
    interface Vlanif100
    ip address 192.168.2.2 255.255.255.0
    pim sm
    #
    interface 10GE1/0/1
    port default vlan 10
    #
    interface 10GE1/0/2
    port link-type trunk
    port trunk allow-pass vlan 100
    #
    interface LoopBack0
    ip address 10.2.2.2 255.255.255.255
    pim sm
    #
    ospf 1
    area 0.0.0.0
    network 10.2.2.2 0.0.0.0
    network 10.110.1.0 0.0.0.255
    network 192.168.2.0 0.0.0.255
    #
    pim
    bidir-pim
    #
    return
  • SwitchC的配置文件

    #
    sysname SwitchC
    #
    vlan batch 20 200
    #
    router id 10.3.3.3
    #
    multicast routing-enable
    #
    interface Vlanif20
    ip address 10.110.2.1 255.255.255.0
    pim sm
    igmp enable
    #
    interface Vlanif200
    ip address 192.168.3.2 255.255.255.0
    pim sm
    #
    interface 10GE1/0/1
    port default vlan 20
    #
    interface 10GE1/0/3
    port link-type trunk
    port trunk allow-pass vlan 200
    #
    interface LoopBack0
    ip address 10.3.3.3 255.255.255.255
    pim sm
    #
    ospf 1
    area 0.0.0.0
    network 10.3.3.3 0.0.0.0
    network 10.110.2.0 0.0.0.255
    network 192.168.3.0 0.0.0.255
    #
    pim
    bidir-pim
    #
    return
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