冗余口和聚合的区别

冗余口是两个H3C设备堆叠，每个设备各出一个口，正常是主口跑业务，聚合是两个口都跑业务。

下行的三层交换机需要创建VLAN，并设置VLAN IP，同时将VLAN划分到端口。
关于冗余口的配置，可参考如下配置举例：

2.13.2 工作在三层，上下行分别连接一台设备

1. 组网需求

  • 如图2-7所示，Device A和Device B组成IRF，Device A和Device B分别用一个接口连接上行设备Device C，再分别用一个接口连接下行设备Device D。
  • Device C使用VLAN接口连接Device A和Device B，Device D也使用VLAN接口连接Device A和Device B。
  • 正常情况下，流量走Device D——Device A——Device C；当这条通道上的任一链路或者设备故障时，流量切换到Device D——Device B——Device C。正常通道故障恢复时，流量再切回。

    2. 组网图

    图2-7 配置组网图
    image.png

3. 配置步骤

(1) 配置各接口的IP地址、路由、安全域及域间策略保证网络可达，具体配置过程略。
(2) 配置IRF
IRF的配置请参见“2.13.2工作在三层，上下行分别连接一台设备”。
(3) 配置以太网冗余接口
# 创建Reth1，IP地址为1.1.1.2/24，成员接口为GigabitEthernet1/0/1和GigabitEthernet2/0/1，其中GigabitEthernet1/0/1的优先级为255，GigabitEthernet2/0/1的优先级为50。

  1. <Sysname> system-view
  2. [Sysname] interface reth 1
  3. [Sysname-Reth1] ip address 1.1.1.2 24
  4. [Sysname-Reth1] member interface gigabitethernet 1/0/1 priority 255
  5. [Sysname-Reth1] member interface gigabitethernet 2/0/1 priority 50
  6. [Sysname-Reth1] quit

创建Reth2，IP地址为2.2.2.2/24，成员接口为GigabitEthernet1/0/2和GigabitEthernet2/0/2，其中GigabitEthernet1/0/2的优先级为255，GigabitEthernet2/0/2的优先级为50。

  1. [Sysname] interface reth 2
  2. [Sysname-Reth2] ip address 2.2.2.2 24
  3. [Sysname-Reth2] member interface gigabitethernet 1/0/2 priority 255
  4. [Sysname-Reth2] member interface gigabitethernet 2/0/2 priority 50
  5. [Sysname-Reth2] quit

(4) 配置Track，监测上、下行接口的状态。

  1. [Sysname] track 1 interface gigabitethernet 1/0/1 physical
  2. [Sysname-track-1] quit
  3. [Sysname] track 2 interface gigabitethernet 1/0/2 physical
  4. [Sysname-track-2] quit
  5. [Sysname] track 3 interface gigabitethernet 2/0/1 physical
  6. [Sysname-track-3] quit
  7. [Sysname] track 4 interface gigabitethernet 2/0/2 physical
  8. [Sysname-track-4] quit

(5) 配置冗余组
# 创建Node 1，Node 1和Device A绑定，为主节点。关联的Track项为1和2。

  1. [Sysname] redundancy group aaa
  2. [Sysname-redundancy-group-aaa] node 1
  3. [Sysname-redundancy-group-aaa-node1] bind slot 1
  4. [Sysname-redundancy-group-aaa-node1] priority 100
  5. [Sysname-redundancy-group-aaa-node1] track 1 interface gigabitethernet 1/0/1
  6. [Sysname-redundancy-group-aaa-node1] track 2 interface gigabitethernet 1/0/2
  7. [Sysname-redundancy-group-aaa-node1] quit

创建Node 2，Node 2和Device B绑定，为备节点。关联的Track项为3和4。

  1. [Sysname-redundancy-group-aaa] node 2
  2. [Sysname-redundancy-group-aaa-node2] bind slot 2
  3. [Sysname-redundancy-group-aaa-node2] priority 50
  4. [Sysname-redundancy-group-aaa-node2] track 3 interface gigabitethernet 2/0/1
  5. [Sysname-redundancy-group-aaa-node2] track 4 interface gigabitethernet 2/0/2
  6. [Sysname-redundancy-group-aaa-node2] quit

将Reth1和Reth2添加到冗余组中。

  1. [Sysname-redundancy-group-aaa] member interface reth 1
  2. [Sysname-redundancy-group-aaa] member interface reth 2
  3. [Sysname-redundancy-group-aaa] quit

4. 验证配置

(1) 缺省情况下的显示信息
# 显示冗余组信息。可以看到优先级高的Node 1为主节点，Reth1和Reth2中优先级高的成员接口处于激活状态。

  1. [Sysname] display redundancy group aaa
  2. Redundancy group aaa (ID 1):
  3. Node ID   Slot     Priority  Status       Track weight
  4.  Node1     Slot1    100       Primary      255
  5. Node2     Slot2    50        Secondary    255
  7. Preempt delay time remained   : 0    min
  8. Preempt delay timer setting   : 1    min
  9. Remaining hold-down time      : 0    sec
  10. Hold-down timer setting       : 300  sec
  11. Manual switchover request     : No
  13. Member interfaces:
  14. Reth1          Reth2
  15. Member failover groups:
  17. Node 1:
  18. Track info:
  19. Track     Status        Reduced weight       Interface
  20. 1         Positive      255                  GE1/0/1
  21. 2         Positive      255                  GE1/0/2
  22. Node 2:
  23. Track info:
  24. Track     Status        Reduced weight      Interface
  25. 3         Positive      255                 GE2/0/1
  26. 4         Positive      255                 GE2/0/2

显示Reth信息。可以看到Reth1和Reth2中优先级高的成员接口处于激活状态。

  1. [Sysname] display reth interface reth 1
  2. Reth1 :
  3. Redundancy group  : aaa
  4. Member                Physical status         Forwarding status    Presence status
  5. GE1/0/1               UP                      Active               Normal
  6. GE2/0/1               UP                      Inactive             Normal
  7. [Sysname] display reth interface reth 2
  8. Reth2 :
  9. Redundancy group  : aaa
  10. Member                Physical status         Forwarding status    Presence status
  11. GE1/0/2               UP                      Active               Normal
  12. GE2/0/2               UP                      Inactive             Normal

(2) 冗余组内主备倒换后的显示信息
# 手工关闭接口GigabitEthernet1/0/2，显示冗余组信息。可以看到优先级低的Node 2为主节点。

  1. [Sysname] interface gigabitethernet 1/0/2
  2. [Sysname-GigabitEthernet1/0/2] shutdown
  3. [Sysname-GigabitEthernet1/0/2] display redundancy group aaa
  4. Redundancy group aaa (ID 1):
  5. Node ID   Slot     Priority  Status       Track weight
  6. Node1     Slot1    100       Secondary    -255
  7.  Node2     Slot2    50        Primary      255
  9. Preempt delay time remained   : 0    min
  10. Preempt delay timer setting   : 1    min
  11. Remaining hold-down time      : 0    sec
  12. Hold-down timer setting       : 300  sec
  13. Manual switchover request     : No
  15. Member interfaces:
  16. Reth1          Reth2
  17. Member failover groups:
  19. Node 1:
  20. Track info:
  21. Track     Status       Reduced weight     Interface
  22. 1         Negative     255                GE1/0/1
  23. 2         Negative     255                GE1/0/2(Fault)
  24. Node 2:
  25. Track info:
  26. Track     Status       Reduced weight     Interface
  27. 3         Positive     255                GE2/0/1
  28. 4         Positive     255                GE2/0/2

显示Reth的信息。Reth2下的接口GigabitEthernet1/0/2故障（DOWN），Reth1下的接口GigabitEthernet1/0/1被协议关闭（DOWN(redundancy down)）。GigabitEthernet2/0/1和GigabitEthernet2/0/2激活。

  1. [Sysname-GigabitEthernet1/0/2] display reth interface reth 1
  2. Reth1 :
  3. Redundancy group  : aaa
  4. Member                 Physical status         Forwarding status    Presence status
  5. GE1/0/1                DOWN(redundancy down)   Inactive             Normal
  6. GE2/0/1                UP                      Active               Normal
  7. [Sysname-GigabitEthernet1/0/2] display reth interface reth 2
  8. Reth2 :
  9. Redundancy group  : aaa
  10. Member                 Physical status         Forwarding status    Presence status
  11. GE1/0/2                DOWN                    Inactive             Normal
  12. GE2/0/2                UP                      Active               Normal