• 自制mpls ldp实验


    实验步骤

    步骤1:完成EIGRP BGP 及宣告配置

    步骤2:完成LDP 的配置

    过程校验

    步骤1:校验和理解LDP 邻居关系的发现和邻接关系的建立

    R4#show mpls ldp discovery detail

    Local LDP Identifier:

    4.4.4.4:0

    Discovery Sources:

    Interfaces:

        FastEthernet0/0 (ldp): xmit/recv

         Enabled: Interface config

         Hello interval: 5000 ms; Transport IP addr: 4.4.4.4

         LDP Id: 5.5.5.5:0; no host route to transport addr

         Src IP addr: 45.45.45.5; Transport IP addr: 5.5.5.5

         Hold time: 15 sec; Proposed local/peer: 15/15 sec

         Reachable via 5.5.5.0/24

        FastEthernet0/1 (ldp): xmit/recv

         Enabled: Interface config

         Hello interval: 5000 ms; Transport IP addr: 4.4.4.4

         LDP Id: 2.2.2.2:0; no host route to transport addr

         Src IP addr: 24.24.24.2; Transport IP addr: 2.2.2.2

         Hold time: 15 sec; Proposed local/peer: 15/15 sec

         Reachable via 2.2.2.0/24

    步骤2:校验邻接关系是否建立
    R4#show mpls ldp neighbor

    Peer LDP Ident: 2.2.2.2:0; Local LDP Ident 4.4.4.4:0

        TCP connection: 2.2.2.2.646 - 4.4.4.4.58866

        State: Oper; Msgs sent/rcvd: 32/33; Downstream

        Up time: 00:18:54

        LDP discovery sources:

         FastEthernet0/1, Src IP addr: 24.24.24.2

    Addresses bound to peer LDP Ident:

    12.12.12.2 24.24.24.2 23.23.23.2 2.2.2.2

    Peer LDP Ident: 5.5.5.5:0; Local LDP Ident 4.4.4.4:0

        TCP connection: 5.5.5.5.55110 - 4.4.4.4.646

        State: Oper; Msgs sent/rcvd: 32/33; Downstream

        Up time: 00:18:28

        LDP discovery sources:

         FastEthernet0/0, Src IP addr: 45.45.45.5

    Addresses bound to peer LDP Ident:

    45.45.45.5 56.56.56.5 35.35.35.5 5.5.5.5

    步骤3:校验LDP 的标签分配、分发、关联

    3.1 查看LIB

    R2

    R2#show mpls ldp bindings

    tib entry: 2.2.2.0/24, rev 4

        local binding: tag: imp-null

        remote binding: tsr: 3.3.3.3:0, tag: 300

        remote binding: tsr: 4.4.4.4:0, tag: 401

    ……………………………………

    tib entry: 5.5.5.0/24, rev 10

        local binding: tag: 203

        remote binding: tsr: 3.3.3.3:0, tag: 302

        remote binding: tsr: 4.4.4.4:0, tag: 403

    …………………………………

    R4

    R4#show mpls ldp bindings

    tib entry: 2.2.2.0/24, rev 4

        local binding: tag: 401

        remote binding: tsr: 2.2.2.2:0, tag: imp-null

        remote binding: tsr: 5.5.5.5:0, tag: 500

    …………………………

    tib entry: 5.5.5.0/24, rev 10

        local binding: tag: 403

        remote binding: tsr: 2.2.2.2:0, tag: 203

        remote binding: tsr: 5.5.5.5:0, tag: imp-null

    R5#show mpls ldp bindings

    tib entry: 2.2.2.0/24, rev 4

        local binding: tag: 500

        remote binding: tsr: 3.3.3.3:0, tag: 300

        remote binding: tsr: 4.4.4.4:0, tag: 401

    tib entry: 5.5.5.0/24, rev 10

        local binding: tag: imp-null

        remote binding: tsr: 3.3.3.3:0, tag: 302

        remote binding: tsr: 4.4.4.4:0, tag: 403

    此时利用show mpls ldp neighbor 获取对端设备共享的绑定地址

    利用show ip route 查看目标网络真实下一跳地址

    确认拥有下一跳地址和绑定地址重样的设备远程标签被关联

    3.2 查看LFIB 确认正确的理解和分析了标签关联过程

    R2#show mpls forwarding-table

    Local Outgoing Prefix Bytes tag Outgoing Next Hop

    tag tag or VC or Tunnel Id switched interface

    200 400 35.35.35.0/24 0 Fa0/1 24.24.24.4

    201 Pop tag 3.3.3.0/24 0 Se1/0 point2point

    202 Pop tag 4.4.4.0/24 0 Fa0/1 24.24.24.4

    203 403 5.5.5.0/24 0 Fa0/1 24.24.24.4

    204 Pop tag 45.45.45.0/24 0 Fa0/1 24.24.24.4

    R4#show mpls forwarding-table

    Local Outgoing Prefix Bytes tag Outgoing Next Hop

    tag tag or VC or Tunnel Id switched interface

    400 Pop tag 35.35.35.0/24 0 Fa0/0 45.45.45.5

    401 Pop tag 2.2.2.0/24 8444 Fa0/1 24.24.24.2

    402 501 3.3.3.0/24 0 Fa0/0 45.45.45.5

    201 3.3.3.0/24 0 Fa0/1 24.24.24.2

    403 Pop tag 5.5.5.0/24 5258 Fa0/0 45.45.45.5

    404 Pop tag 23.23.23.0/24 0 Fa0/1 24.24.24.2

    R4#

    R5#show mpls forwarding-table

    Local Outgoing Prefix Bytes tag Outgoing Next Hop

    tag tag or VC or Tunnel Id switched interface

    500 401 2.2.2.0/24 0 Fa0/0 45.45.45.4

    R5#

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  • 原文地址:https://www.cnblogs.com/jinhengyu/p/10258035.html
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