注：此实验需要HCL3.1版本，3.1以下不支持easy-irf，请用IRF2.0代替

实验拓扑

注：如无特别说明，描述中的 R1 或 SW1 对应拓扑中设备名称末尾数字为 1 的设备，R2 或 SW2 对应拓扑中设备名称末尾数字为 2 的设备，以此类推；此拓扑请严格按照图示接口连接线缆

实验需求

  1. SW1，SW2组成一台 IRF 堆叠设备，并使用BFD MAD技术
  2. 交换机 IRF 设备 ID 与设备编号一致

    实验解法

    分析：根据需求，交换机 IRF 设备 ID 与设备编号一致，所以需要修改 SW2的 IRF 设备 ID，并保存配置后，重启生效后才可进行后续配置

    easy-irf命令用于快速配置IRF，技术详情

步骤 1：配置SW1为IRF主，优先级为32,并创建业务vlan 10、20

  1. [H3C]vlan 10
  2. [H3C-vlan10]vlan 20
  3. [H3C]easy-irf member 1 domain 10 priority 32 irf-port1 Ten-GigabitEthernet 1/0/50 Ten-GigabitEthernet 1/0/51

步骤 2：配置SW2为IRF备，优先级为缺省1

  1. [H3C]easy-irf member 1 renumber 2 domain 10 irf-port2 Ten-GigabitEthernet 1/0/50 Ten-GigabitEthernet 1/0/51

测试：display irf，如下就已堆叠成功

  1. [SW2]disp irf
  2. MemberID    Role    Priority  CPU-Mac         Description
  3.   *1        Master  32        8085-892d-0104  ---
  4.   +2        Standby 1         8085-8b56-0204  ---
  5. --------------------------------------------------
  6.  * indicates the device is the master.
  7.  + indicates the device through which the user logs in.
  9.  The bridge MAC of the IRF is: 8085-892d-0100
  10.  Auto upgrade                : yes
  11.  Mac persistent              : 6 min
  12.  Domain ID                   : 10

步骤 3：用vlan 1000做为BFD MAD检测vlan，int g1/0/3做BFD检测端口，技术详情

  1. [H3C-Vlan-interface1000]vlan 1000
  2. [H3C-vlan1000] description BFD-MAD
  3. [H3C-vlan1000]interface Vlan-interface1000
  4. [H3C-Vlan-interface1000] mad bfd enable
  5. [H3C-Vlan-interface1000] mad ip address 169.255.255.1 255.255.255.252 member 1
  6. [H3C-Vlan-interface1000] mad ip address 169.255.255.2 255.255.255.252 member 2
  7. interface Bridge-Aggregation1023
  8. description For:mad
  9. interface Bridge-Aggregation1024
  10. description For:mad
  11. interface GE1/0/3
  12. undo stp enable
  13. port link-aggregation group 1023
  14. interface GE 1/0/4
  15. undo stp enable
  16. port link-aggregation group 1023
  17. interface GE  2/0/3
  18. undo stp enable
  19. port link-aggregation group 1024
  20. interface GE  2/0/4
  21. undo stp enable
  22. port link-aggregation group 1024
  23. interface Bridge-Aggregation1023
  24. undo stp enable
  25. port access vlan 1000
  26. interface Bridge-Aggregation1024
  27. undo stp enable
  28. port access vlan 1000

测试：display mad verbose，当MAD status为Faulty 是没有问题的。当IRF分裂时MAD工作时MAD status为Normal

  1. [H3C]display mad ?
  2.   >        Redirect it to a file
  3.   >>       Redirect it to a file in append mode
  4.   verbose  Detailed information
  5.   |        Matching output
  6.   <cr>     
  8. [H3C]display mad ver
  9. [H3C]display mad verbose 
  10. Multi-active recovery state: No
  11. Excluded ports (user-configured):
  12. Excluded ports (system-configured):
  13.   IRF physical interfaces:
  14.     Ten-GigabitEthernet1/0/50
  15.     Ten-GigabitEthernet1/0/51
  16.     Ten-GigabitEthernet2/0/50
  17.     Ten-GigabitEthernet2/0/51
  18.   BFD MAD interfaces:
  19.     Vlan-interface1000
  20.     GigabitEthernet1/0/3
  21. MAD ARP disabled.
  22. MAD ND disabled.
  23. MAD LACP disabled.
  24. MAD BFD enabled interface: Vlan-interface1000
  25.   MAD status                 : Faulty
  26.   Member ID   MAD IP address       Neighbor   MAD status
  27.   1           169.255.255.1/30     2          Faulty    
  28.   2           169.255.255.2/30     1          Faulty    
  30. [H3C]display bfd session 
  31.  Total Session Num: 1     Up Session Num: 0     Init Mode: Active
  33.  IPv4 session working in control packet mode:
  35.  LD/RD          SourceAddr      DestAddr        State    Holdtime    Interface
  36.  34881/0        169.255.255.1   169.255.255.2   Down        /        Vlan1000

步骤 4：SW1 SW2配置

  1. vlan 10
  2. vlan 20
  3. int br 2
  4. port link-type trunk
  5. undo port trunk permit vlan 1
  6. port trunk permit vlan 10 20
  7. int br 1
  8. port link-type trunk
  9. undo port trunk permit vlan 1
  10. port trunk permit vlan 10 20
  11. int g 1/0/1
  12.  port link-a g 1
  13. int g 2/0/1
  14. port link-a g 1
  15. int g 1/0/2
  16.  port link-a g 2
  17. int g 2/0/2
  18. port link-a g 2

步骤 3：配置SW3，将连接SW1、SW2的口配置为TRUNK，连接PC的为access口并创建VLAN

  1. [H3C]vlan 10
  2. [H3C-vlan10]vlan 20
  3. [H3C]int br 1
  4. [H3C-Bridge-Aggregation1] port link-type trunk
  5. [H3C-Bridge-Aggregation1] undo port trunk permit vlan 1
  6. [H3C-Bridge-Aggregation1] port trunk permit vlan 10 20
  7. [H3C-Bridge-Aggregation1]int ran g 1/0/1 to g 1/0/2
  8. [H3C-if-range] port link-a g 1
  9. [H3C-if-range]interface GigabitEthernet 1/0/3
  10. [H3C-GigabitEthernet1/0/3] port access vlan 10
  11. [H3C-GigabitEthernet1/0/3]interface GigabitEthernet 1/0/4
  12. [H3C-GigabitEthernet1/0/4] port access vlan 20

步骤 4：在路由器上创建网关，并起三层聚合口，将互联下方IRF的口加入

  1. [H3C]interface Route-Aggregation 1
  2. [H3C-Route-Aggregation1]interface GigabitEthernet 0/0/0
  3. [H3C-GigabitEthernet0/0/0] port link-aggregation group 1
  4. [H3C-GigabitEthernet0/0/0]interface GigabitEthernet 0/0/1
  5. [H3C-GigabitEthernet0/0/1] port link-aggregation group 1
  6. [H3C]int Route-Aggregation 1.10
  7. [H3C-Route-Aggregation1.10]ip address 172.16.10.254 24
  8. [H3C-Route-Aggregation1.10]vlan-type dot1q vid 10
  9. [H3C-Route-Aggregation1.10]int Route-Aggregation 1.20
  10. [H3C-Route-Aggregation1.20]ip address 192.168.100.254 24
  11. [H3C-Route-Aggregation1.20]vlan-type dot1q vid 20