MSTP+OSPF+VRRP综合实验指导书

（一）拓扑描述：

本次实验采用MSTP+OSPF+VRRP技术，提供网络高可靠性、稳定性。MSTP（多生成树实例）主要解决网络中（SW5―SW4―SW6）设备间的环路问题，对接入交换机双上行链路进行备份；对业务流进行负载分担。OSPF（开放最短路径优先协议）动态路由技术，处理（SW5―SW4―SW7）之间的路由学习，计算出多条路径，实现出口链路负载；vrrp(虚拟网关路由协议)通过将两台核心交换机上面的地址虚拟出来一个虚拟IP地址作为用户提供网关服务。核心层交换机任意一台出现故障不会影响用户网络服务。设备需求：采用四台5700-28C-HI交换机，两台PC，7条网线。IP地址规划： 四台交换机采用192.168.1.1-192.168.1.4作为设备的管理地址及担当设备互联地址。
核心交换机SW4上面 vlan 2（192.168.2.252） vlan 3（192.168.2.252）
核心交换机SW5上面 vlan 2（192.168.3.252） vlan 3（192.168.3.252）
在两台核心交换机做VRRP（vlan2 vip:192.168.2.254;vlan 3 vip：192.168.3.254）

（二）配置步骤;

1、 配置交换机(SW4―SW5―SW6―SW7)的互联IP地址，设备互联端口启用TRUNK模式。2、 配置MSTP生成树。3、 配置VRRP 4、 配置ospf5、 测试各项

（一）配置命令及验证结果：

1、 SW4：(SW5―SW6―SW7和SW4配置一致)interface Vlanif1 ip address 192.168.1.3 255.255.255.0interface GigabitEthernet0/0/1port link-type trunkport trunk allow-pass vlan 2 to 40942、 SW4 stp region-configuration region-name h3c instance 2 vlan 2 instance 3 vlan 3 active region-configurationstp instance 2 priority 4096stp instance 3 priority 8192 SW5
stp region-configuration region-name h3c instance 2 vlan 2 instance 3 vlan 3 active region-configurationstp instance 2 priority 8192stp instance 3 priority 4096SW6 stp region-configuration region-name h3c instance 2 vlan 2 instance 3 vlan 3 active region-configurationstp instance 2 priority 12288stp instance 3 priority 122883、 SW4interface Vlanif2ip address 192.168.2.252 255.255.255.0vrrp vrid 1 virtual-ip 192.168.2.254vrrp vrid 1 priority 120interface Vlanif3ip address 192.168.3.252 255.255.255.0vrrp vrid 2 virtual-ip 192.168.3.254 SW5
interface Vlanif2ip address 192.168.2.253 255.255.255.0vrrp vrid 1 virtual-ip 192.168.2.254interface Vlanif3ip address 192.168.3.253 255.255.255.0vrrp vrid 2 virtual-ip 192.168.3.254vrrp vrid 2 priority 1204、 SW4（其他配置雷同）ospf 1 area 0.0.0.0 network 192.168.1.0 0.0.0.255 network 192.168.2.0 0.0.0.255 network 192.168.3.0 0.0.0.2555、 查看各协议状态1、在接入交换机查看生成树实例<Huawei>dis stp instance 2 brief MSTID Port Role STP State Protection 2 GigabitEthernet0/0/1 ALTE DISCARDING NONE 2 GigabitEthernet0/0/2 ROOT FORWARDING NONE 2 GigabitEthernet0/0/3 DESI FORWARDING NONE<Huawei>dis stp instance 3 brief MSTID Port Role STP State Protection 3 GigabitEthernet0/0/1 ROOT FORWARDING NONE 3 GigabitEthernet0/0/2 ALTE DISCARDING NONE 3 GigabitEthernet0/0/4 DESI FORWARDING NONE2、查看vrrp状态[sw4]dis vrrp briefVRID State Interface Type Virtual IP ----------------------------------------------------------------1 Master Vlanif2 Normal 192.168.2.254 2 Backup Vlanif3 Normal 192.168.3.254 ----------------------------------------------------------------Total:2 Master:1 Backup:1 Non-active:0 [sw5]dis vrrp brief VRID State Interface Type Virtual IP ----------------------------------------------------------------1 Backup Vlanif2 Normal 192.168.2.254 2 Master Vlanif3 Normal 192.168.3.254 ----------------------------------------------------------------Total:2 Master:1 Backup:1 Non-active:0 3、查看路由表 [sw5]dis ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 10 Routes : 12 Destination/Mask Proto Pre Cost Flags NextHop Interface 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0 192.168.1.0/24 Direct 0 0 D 192.168.1.2 Vlanif1 192.168.1.2/32 Direct 0 0 D 127.0.0.1 Vlanif1 192.168.2.0/24 Direct 0 0 D 192.168.2.253 Vlanif2 192.168.2.253/32 Direct 0 0 D 127.0.0.1 Vlanif2 192.168.2.254/32 OSPF 10 2 D 192.168.2.252 Vlanif2 OSPF 10 2 D 192.168.3.252 Vlanif3 OSPF 10 2 D 192.168.1.3 Vlanif1 192.168.3.0/24 Direct 0 0 D 192.168.3.253 Vlanif3 192.168.3.253/32 Direct 0 0 D 127.0.0.1 Vlanif3 192.168.3.254/32 Direct 0 0 D 127.0.0.1 Vlanif3

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