1、一、搭建本次实验的拓扑和环境要求电脑配置：4G内存，cpu性能至少2.3GHZ，双线程更好eNSP：4台交换机，两台S5700、两台S3700，有真实的机器更好，土豪
2、二、配置交换机的信息和各个接口信息<Quidway>system-viewEnter system view, return user view with Ctrl+Z.[Quidway]sysname S1[S1]<Quidway>system-viewEnter system view, return user view with Ctrl+Z.[Quidway]sysname S2[S2]<Quidway>system-viewEnter system view, return user view with Ctrl+Z.[Quidway]sysname S3[S3]<Quidway>system-viewEnter system view, return user view with Ctrl+Z.[Quidway]sysname S4
3、三、创建SEP段并配醅呓择锗置控制VLAN和指定保护实例[S1]sep segment 1[S1-sep-segment1]control-vlan 10[S1-sep-segment1]protected-instance all[S1-sep-segment1]quit[S1]sep segment 2[S1-sep-segment2]control-vlan 20[S1-sep-segment2]protected-instance all[S2]sep segment 1[S2-sep-segment1]control-vlan 10[S2-sep-segment1]protected-instance all[S2-sep-segment1]quit[S2]sep segment 2[S2-sep-segment2]control-vlan 20[S2-sep-segment2]protected-instance all[S3]sep segment 2[S3-sep-segment2]control-vlan 20[S3-sep-segment2]protected-instance all[S4]sep segment 2[S4-sep-segment2]control-vlan 20[S4-sep-segment2]protected-instance all
4、四、将接口加入SEP段，敛财醣沁并配置接口角色[S1]interface GigabitEthernet 0/0/9[S1-GigabitEthernet0/0/9]stp disa芟鲠阻缒ble[S1-GigabitEthernet0/0/9]sep segment 1 edge primary[S1-GigabitEthernet0/0/9]inter GigabitEthernet 0/0/10[S1-GigabitEthernet0/0/10]stp disable[S1-GigabitEthernet0/0/10]sep segment 1 edge secondary[S1-GigabitEthernet0/0/10]inter GigabitEthernet 0/0/13[S1-GigabitEthernet0/0/13]stp disable[S1-GigabitEthernet0/0/13]sep segment 2 edge primary[S2]interface GigabitEthernet 0/0/23[S2-GigabitEthernet0/0/23]stp disable[S2-GigabitEthernet0/0/23]sep segment 2 edge secondary[S2-GigabitEthernet0/0/23]inter GigabitEthernet 0/0/9[S2-GigabitEthernet0/0/9]stp disable[S2-GigabitEthernet0/0/9]sep segment 1[S2-GigabitEthernet0/0/9]inter GigabitEthernet 0/0/10[S2-GigabitEthernet0/0/10]stp disable[S2-GigabitEthernet0/0/10]sep segment 1[S3]interface Ethernet 0/0/13[S3-Ethernet0/0/13]stp disable[S3-Ethernet0/0/13]sep segment 2[S3-Ethernet0/0/13]inter ethernet 0/0/23[S3-Ethernet0/0/23]stp disable[S3-Ethernet0/0/23]sep segment 2
5、五、配置阻俅驺小钒塞模式和抢占模式[S1]sep segment 1[S1-sep-segment1]block port optim锾攒揉敫al[S1-sep-segment1]quit[S1]sep segment 2[S1-sep-segment2]block port[S1-sep-segment2]block port optimal[S2]interface GigabitEthernet 0/0/10[S2-GigabitEthernet0/0/10]sep segment 1 priority 128[S3]inter Ethernet 0/0/23[S3-Ethernet0/0/23]sep segment 2 priority 128[S1]sep segment 1[S1-sep-segment1]preempt delay 30[S1-sep-segment1]quit[S1]sep segment 2[S1-sep-segment2]preempt delay 30
6、六、配置拓扑变更报告[S1]sep segment 2[S1-sep-segment2]tc-notify segment 1[S2]sep segment 2[S2-sep-segment2]tc-notify segment 1
7、七、验证SEP的作用1、查看SEP运行信息2、关闭S2的G0/0/9端口查看SEP运行情况3、打开S2的G0/0/9端口，关闭S3的E0/0/13端口并查看SEP运行情况4、打开S3的E0/0/13端口，查看运行情况
