【实验需求】 使用MSTP实现VLAN10 和VLAN20的互访， 并且VLAN10的流量通过路径S3到S1到R1 VLAN20的流量通过路径S3到S2到R1。 【实验过程】 1.配置IP地址。 [r1]int g0/0/0 [r1-GigabitEthernet0/0/0]ip add 192.168.10.254 24 [r1-GigabitEthernet0/0/0]undo sh [r1-GigabitEthernet0/0/0]int g0/0/1 [r1-GigabitEthernet0/0/1]ip add 192.168.20.254 24 [r1-GigabitEthernet0/0/1]undo sh 2.配置VLAN和Trunk。 SW1: [sw1]vlan batch 10 20 [sw1]int e0/0/2 [sw1-Ethernet0/0/2]port link-type trunk [sw1-Ethernet0/0/2]port trunk allow- vlan all [sw1-Ethernet0/0/2]int e0/0/3 [sw1-Ethernet0/0/3]port link-type trunk [sw1-Ethernet0/0/3]port trunk allow- vlan all [sw1-Ethernet0/0/3]int e0/0/1 [sw1-Ethernet0/0/1]port link-type hybrid [sw1-Ethernet0/0/1]port hybrid untagged vlan 10 [sw1-Ethernet0/0/1]port hybrid pvid 10 SW2: [sw2]vlan batch 10 20 [sw2-Ethernet0/0/2]port link-type trunk [sw2-Ethernet0/0/2]port trunk allow-pass vlan all [sw2-Ethernet0/0/2]int e0/0/3 [sw2-Ethernet0/0/3]port link-type trunk [sw2-Ethernet0/0/3]port trunk allow-pass vlan all [sw2-Ethernet0/0/3]int e0/0/1 [sw2-Ethernet0/0/1]port link-type hybrid [sw2-Ethernet0/0/1]port hybrid pvid vlan 20 [sw2-Ethernet0/0/1]port hybrid untagged vlan 20 SW3: [sw3]int e0/0/1 [sw3-Ethernet0/0/1]port link-type trunk [sw3-Ethernet0/0/1]port trunk allow-pass vlan all [sw3-Ethernet0/0/1]int e0/0/2 [sw3-Ethernet0/0/2]port link-type trunk [sw3-Ethernet0/0/2]port trunk allow-pass vlan all [sw3-Ethernet0/0/3]int e0/0/3 [sw3-Ethernet0/0/3]port link-type access [sw3-Ethernet0/0/3]port default vlan 10 [sw3-Ethernet0/0/3]int e0/0/4 [sw3-Ethernet0/0/4]port link-type access [sw3-Ethernet0/0/4]port default vlan 20
3.配置MSTP。 SW1: [sw1]stp mode mstp [sw1]stp region-configuration [sw1-mst-region]region-name benet.com [sw1-mst-region]revision-level 1 [sw1-mst-region]instance 1 vlan 10 [sw1-mst-region]instance 2 vlan 20 [sw1-mst-region]active region-configuration [sw1-mst-region]q [sw1]stp instance 1 root primary [sw1]stp instance 2 root secondary SW2: [sw2]stp mode mstp [sw2]stp region-configuration [sw2-mst-region]region-name benet.com [sw2-mst-region]revision-level 1 [sw2-mst-region]instance 1 vlan 10 [sw2-mst-region]instance 2 vlan 20 [sw2-mst-region]active region-configuration [sw2-mst-region]q [sw2]stp instance 1 root secondary [sw2]stp instance 2 root primary SW3: [sw3]stp mode mstp [sw3]stp region-configuration [sw3-mst-region]revision-level 1 [sw3-mst-region]instance 1 vlan 10 [sw3-mst-region]instance 2 vlan 20 [sw3-mst region]active region-configuration
