配置SEP多实例示例

操作步骤

1. 创建SEP段和控制VLAN

   • 配置Segment ID为1的SEP段和VLAN ID为10的控制VLAN

     # 配置Router1。

     <Huawei> system-view

     [Huawei] sysname Router1

     [Router1] sep segment 1

     [Router1-sep-segment1] control-vlan 10

     [Router1-sep-segment1] quit

     # 配置Router2。

     <Huawei> system-view

     [Huawei] sysname Router2

     [Router2] sep segment1

     [Router2-sep-segment1] control-vlan 10

     [Router2-sep-segment1] quit

     # 配置Router3。

     <Huawei> system-view

     [Huawei] sysname Router3

     [Router3] sep segment 1

     [Router3-sep-segment1] control-vlan 10

     [Router3-sep-segment1] quit

     # 配置Router4。

     <Huawei> system-view

     [Huawei] sysname Router4

     [Router4] sep segment 1

     [Router4-sep-segment1] control-vlan 10

     [Router4-sep-segment1] quit

   • 配置Segment ID为2的SEP段和VLAN ID为10的控制VLAN

     # 配置Router1。

     [Router1] sep segment 2

     [Router1-sep-segment2] control-vlan 10

     [Router1-sep-segment2] quit

     # 配置Router2。

     [Router2] sep segment2

     [Router2-sep-segment2] control-vlan 10

     [Router2-sep-segment2] quit

     # 配置Router3。

     [Router3] sep segment 2

     [Router3-sep-segment2] control-vlan 10

     [Router3-sep-segment2] quit

     # 配置Router4。

     [Router4] sep segment 2

     [Router4-sep-segment2] control-vlan 10

     [Router4-sep-segment2] quit

   • 控制VLAN的ID必须是没有被创建或使用的。

   • 控制VLAN成功创建后，配置文件会自动显示创建普通VLAN的命令。

   • 每个SEP段必须配置控制VLAN，当接口加入已经配置控制VLAN的SEP段后，接口将自动加入控制VLAN。不需使用命令port trunk allow-pass vlan配置，该命令会自动显示在加入SEP段的接口配置文件中。

2. 配置SEP段保护实例，并将实例与用户VLAN映射。
   # 配置Router1。

   [Router1] vlan batch 100 to 500

   [Router1] sep segment 1

   [Router1-sep-segment1] protected-instance 1

   [Router1-sep-segment1] quit

   [Router1] sep segment 2

   [Router1-sep-segment2] protected-instance 2

   [Router1-sep-segment2] quit

   [Router1] stp region-configuration

   [Router1-mst-region] instance 1 vlan 100 to 300

   [Router1-mst-region] instance 2 vlan 301 to 500

   [Router1-mst-region] active region-configuration

   [Router1-mst-region] quit

   Router2～Router4配置略。Router2～Router4配置与Router1配置类似，具体配置请参见本示例配置文件。

3. 将环网上的设备加入SEP段，并配置端口角色

   缺省情况下，二层端口上STP处于使能状态。在将端口加入SEP段之前，请先去使能STP。

   # 配置Router1的端口GE7/0/1端口角色为主边缘端口，GE7/0/3端口角色为副边缘端口。

   [Router1] interface gigabitethernet 7/0/1

   [Router1-GigabitEthernet7/0/1] stp disable

   [Router1-GigabitEthernet7/0/1] sep segment 1 edge primary

   [Router1-GigabitEthernet7/0/1] sep segment 2 edge primary

   [Router1-GigabitEthernet7/0/1] quit

   [Router1] interface gigabitethernet 7/0/3

   [Router1-GigabitEthernet7/0/3] stp disable

   [Router1-GigabitEthernet7/0/3] sep segment 1 edge secondary

   [Router1-GigabitEthernet7/0/3] sep segment 2 edge secondary

   [Router1-GigabitEthernet7/0/3] quit

   # 配置Router2。

   [Router2] interface gigabitethernet 7/0/1

   [Router2-GigabitEthernet7/0/1] stp disable

   [Router2-GigabitEthernet7/0/1] sep segment 1

   [Router2-GigabitEthernet7/0/1] sep segment 2

   [Router2-GigabitEthernet7/0/1] quit

   [Router2] interface gigabitethernet 7/0/2

   [Router2-GigabitEthernet7/0/2] stp disable

   [Router2-GigabitEthernet7/0/2] sep segment 1

   [Router2-GigabitEthernet7/0/2] sep segment 2

   [Router2-GigabitEthernet7/0/2] quit

   # 配置Router3。

   [Router3] interface gigabitethernet 7/0/1

   [Router3-GigabitEthernet7/0/1] stp disable

   [Router3-GigabitEthernet7/0/1] sep segment 1

   [Router3-GigabitEthernet7/0/1] sep segment 2

   [Router3-GigabitEthernet7/0/1] quit

   [Router3] interface gigabitethernet 7/0/2

   [Router3-GigabitEthernet7/0/2] stp disable

   [Router3-GigabitEthernet7/0/2] sep segment 1

   [Router3-GigabitEthernet7/0/2] sep segment 2

   [Router3-GigabitEthernet7/0/2] quit

   # 配置Router4。

   [Router4] interface gigabitethernet 7/0/1

   [Router4-GigabitEthernet7/0/1] stp disable

   [Router4-GigabitEthernet7/0/1] sep segment 1

   [Router4-GigabitEthernet7/0/1] sep segment 2

   [Router4-GigabitEthernet7/0/1] quit

   [Router4] interface gigabitethernet 7/0/3

   [Router4-GigabitEthernet7/0/3] stp disable

   [Router4-GigabitEthernet7/0/3] sep segment 1

   [Router4-GigabitEthernet7/0/3] sep segment 2

   [Router4-GigabitEthernet7/0/3] quit

4. 灵活指定阻塞端口
   # 在主边缘端口所在的设备Router1上配置阻塞端口的方式是系统名+端口名，抢占模式是延时抢占。

   [Router1] sep segment 1

   [Router1-sep-segment1] block port sysname Router3 interface gigabitethernet 7/0/1

   [Router1-sep-segment1] preempt delay 15

   [Router1-sep-segment1] quit

   [Router1] sep segment 2

   [Router1-sep-segment2] block port sysname Router2 interface gigabitethernet 7/0/1

   [Router1-sep-segment2] preempt delay 15

   [Router1-sep-segment2] quit

   • 在本配置举例中，需要模拟端口故障然后恢复来完成延时抢占，为保证延时抢占功能在两个SEP段上都生效，需模拟位于两个SEP段上的端口故障。比如：

     • 在SEP segment 1上，在Router2的GE7/0/1接口视图下执行命令shutdown来模拟端口故障，然后执行命令undo shutdown来模拟端口故障恢复。
     • 在SEP segment 2上，在Router3的GE7/0/1接口视图下执行命令shutdown来模拟端口故障，然后执行命令undo shutdown来模拟端口故障恢复。

5. 配置CE1、CE2、Router1～Router4的二层转发功能

   具体配置过程略。请参考本配置举例中的配置文件。

6. 验证配置结果

   # 模拟故障产生情况下，查看阻塞端口是否能够从阻塞状态放开进入转发状态。

   # 将Router2上的端口GE7/0/1 shutdown模拟端口故障。

   # 在Router3上执行命令display sep interface，查看在Segment 1中端口GE7/0/1能否从阻塞状态放开进入转发状态。

   [Router3] display sep interface gigabitethernet 7/0/1

   SEP segment 1
   ----------------------------------------------------------------
   Interface           Port Role     Neighbor Status     Port Status
   ----------------------------------------------------------------
   GE7/0/1             common        up                  forwarding
   SEP segment 2
   ----------------------------------------------------------------
   Interface           Port Role     Neighbor Status     Port Status
   ----------------------------------------------------------------
   GE7/0/1             common        up                  forwarding

   # 从上述表项可以发现GE7/0/1的状态可以成功从阻塞状态进入转发状态，Segment 1中转发路径变化并没有影响Segment 2的转发路径。