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VPN+GRE+MGRE

发布时间：2026/8/14 17:30:09
VPN+GRE+MGRE 实验拓扑实验要求1、R5为ISP只能进行IP地址配置其所有地址均配为公有IP地址;2、R1和R5间使用PPP的PAP认证R5为主认证方;R2与R5之间使用ppp的CHAP认证R5为主认证方;R3与R5之间使用HDLC封装3、R1、R2、R3构建一个MGRE环境,R1为中心站点R1、R4间为点到点的GRE; 4、整个私有网络基本RIP全网可达 5、所有Pc设置私有IP为源IP可以访问R5环回。实验思路先把IP地址配好这是最基础的一步。让公网能通配完R1能ping通R2/R3/R4的公网IP说明公网通了。配链路层协议R1-R5用PAP认证R1输账号密码R2-R5用CHAP认证更安全R3-R5改成HDLC封装。配完串口协议变成UP。建隧道R1中心R2和R3分支搭MGRE。跑RIP路由在所有隧道口和业务口开启RIP让各设备互相学习私网路由。配完每台设备都能看到去往其他网段的路由。做NAT让电脑上网R1到R4各自配ACL 2000放行自己的私网段配完PC能ping通5.5.5.5上网成功了。最后测一遍PC之间互ping通PC能访问R5环回。实验配置R1的配置[Huawei]sys R1[R1]interface GigabitEthernet0/0/0[R1-GigabitEthernet0/0/0]ip address 192.168.1.254 255.255.255.0[R1-GigabitEthernet0/0/0]interface Serial4/0/0[R1-Serial4/0/0]link-protocol ppp[R1-Serial4/0/0]ip address 15.1.1.1 255.255.255.0[R1-Serial4/0/0]ppp pap local-user r1 password cipher 123456[R1-Serial4/0/0]interface Tunnel0/0/0[R1-Tunnel0/0/0]ip address 192.168.100.1 255.255.255.0[R1-Tunnel0/0/0]tun[R1-Tunnel0/0/0]tunnel-protocol gre[R1-Tunnel0/0/0]tunnel-protocol gre p2mp[R1-Tunnel0/0/0]source Serial4/0/0[R1-Tunnel0/0/0]nhrp[R1-Tunnel0/0/0]nhrp me[R1-Tunnel0/0/0]nhrp ne[R1-Tunnel0/0/0]nhrp network-id 100[R1-Tunnel0/0/0]nhrp[R1-Tunnel0/0/0]nhrp autjem[R1-Tunnel0/0/0]nhrp authrn[R1-Tunnel0/0/0]nhrp authen[R1-Tunnel0/0/0]nhrp authentication cip[R1-Tunnel0/0/0]nhrp authentication cipher 123456[R1-Tunnel0/0/0]q[R1]inter[R1]interface Tun[R1]interface Tunnel 0/0/1[R1-Tunnel0/0/1]ip address 192.168.3.1 255.255.255.0[R1-Tunnel0/0/1]tunn[R1-Tunnel0/0/1]tunnel-protocol gre[R1-Tunnel0/0/1]sour[R1-Tunnel0/0/1]source 15.1.1.1[R1-Tunnel0/0/1]des[R1-Tunnel0/0/1]desti[R1-Tunnel0/0/1]destination 45.1.1.1[R1-Tunnel0/0/1]q[R1]rip 1[R1-rip-1]vers[R1-rip-1]version 2[R1-rip-1]network 192.168.1.0[R1-rip-1]network 192.168.100.0[R1-rip-1]network 192.168.3.0[R1-rip-1]q[R1]ip route-static 0.0.0.0 0 15.1.1.2[R1]acl number 2000[R1-acl-basic-2000]rule 5 permit source 192.168.1.0 0.0.0.255[R1-acl-basic-2000]interface Serial4/0/0[R1-Serial4/0/0]nat outbound 2000[R1-Serial4/0/0]q2、R2的配置[Huawei]sys R2[R2]inter[R2]interface Gi[R2]interface GigabitEthernet0/0/0[R2-GigabitEthernet0/0/0]ip address 192.168.2.254 255.255.255.0Aug 12 2026 21:48:04-08:00 R2 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IPon the interface GigabitEthernet0/0/0 has entered the UP state.[R2-GigabitEthernet0/0/0]interface Serial4/0/0[R2-Serial4/0/0]link-s[R2-Serial4/0/0]link-p[R2-Serial4/0/0]link-protocol ppp[R2-Serial4/0/0]ip address 25.1.1.1 255.255.255.0[R2-Serial4/0/0]ppp authentication-mode chap[R2-Serial4/0/0]ppp chap user r2[R2-Serial4/0/0]ppp chap password cipher 123456[R2-Serial4/0/0]q[R2]inte[R2]interface Tunn[R2]interface Tunnel 0/0/0[R2-Tunnel0/0/0]ip address 192.168.100.2 255.255.255.0[R2-Tunnel0/0/0]tunnel-p[R2-Tunnel0/0/0]tunnel-protocol[R2]interface Tunnel0/0/0[R2-Tunnel0/0/0]tunnel-protocol gre p2mp[R2-Tunnel0/0/0]source Serial4/0/0[R2-Tunnel0/0/0]nhrp[R2-Tunnel0/0/0]nhrp net[R2-Tunnel0/0/0]nhrp network-id 100[R2-Tunnel0/0/0]nhrp authentication cipher 123456[R2-Tunnel0/0/0]nhrp entry 192.168.100.1 15.1.1.1 register[R2-Tunnel0/0/0]rip 1[R2-rip-1]version 2[R2-rip-1]network 192.168.2.0[R2-rip-1]network 192.168.100.0[R2-rip-1]ip route-static 0.0.0.0 0 25.1.1.2[R2]ip route-static 0.0.0.0 0 25.1.1.2Error: The route already exists.[R2]acl number 2000[R2-acl-basic-2000]rule 5 permit source 192.168.2.0 0.0.0.255[R2-acl-basic-2000]interface Serial4/0/0[R2-Serial4/0/0]nat outbound 2000[R2-Serial4/0/0]q[R2]q3、R3的配置[Huawei]sysname R3[R3]interface GigabitEthernet0/0/0[R3-GigabitEthernet0/0/0]ip address 192.168.3.254 255.255.255.0Aug 12 2026 22:06:51-08:00 R3 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IPon the interface GigabitEthernet0/0/0 has entered the UP state.[R3-GigabitEthernet0/0/0]q[R3]inter[R3]interface S[R3]interface Serial 4/0/0[R3-Serial4/0/0]link-protocol hdlcWarning: The encapsulation protocol of the link will be changed. Continue? [Y/N]:YAug 12 2026 22:07:21-08:00 R3 %%01IFNET/4/CHANGE_ENCAP(l)[1]:The user performedthe configuration that will change the encapsulation protocol of the link and then selected Y.[R3-Serial4/0/0]ip address 35.1.1.1 255.255.255.0[R3-Serial4/0/0]q[R3]interface Tunnel0/0/0[R3-Tunnel0/0/0]ip address 192.168.100.3 255.255.255.0[R3-Tunnel0/0/0]tun[R3-Tunnel0/0/0]tunnel-protocol ger[R3-Tunnel0/0/0]tunnel-protocol gre[R3-Tunnel0/0/0]tunnel-protocol gre p2mp[R3-Tunnel0/0/0]source Serial4/0/0Aug 12 2026 22:07:56-08:00 R3 %%01IFNET/4/LINK_STATE(l)[7]:The line protocol IPon the interface Tunnel0/0/0 has entered the UP state.[R3-Tunnel0/0/0][R3-Tunnel0/0/0]nhrp network-id 100[R3-Tunnel0/0/0]nhrp authentication cipher 123456[R3-Tunnel0/0/0]nhrp entry 192.168.100.1 15.1.1.1 register[R3-Tunnel0/0/0]q[R3]rip 1[R3-rip-1]version 2[R3-rip-1]network 192.168.3.0[R3-rip-1]network 192.168.100.0[R3-rip-1]q[R3]ip rout[R3]ip route-str[R3]ip route-sta[R3]ip route-static 0.0.0.0 0 35.1.1.2[R3]acl number 2000[R3-acl-basic-2000]rule 5 permit source 192.168.3.0 0.0.0.255[R3-acl-basic-2000]interface Serial4/0/0[R3-Serial4/0/0]nat outbound 20004、R4的配置[R4]interface GigabitEthernet0/0/1[R4-GigabitEthernet0/0/1]ip address 192.168.4.254 255.255.255.0Aug 12 2026 22:22:37-08:00 R4 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IPon the interface GigabitEthernet0/0/1 has entered the UP state.[R4-GigabitEthernet0/0/1]interface GigabitEthernet0/0/0[R4-GigabitEthernet0/0/0]ip address 45.1.1.1 255.255.255.0Aug 12 2026 22:22:57-08:00 R4 %%01IFNET/4/LINK_STATE(l)[1]:The line protocol IPon the interface GigabitEthernet0/0/0 has entered the UP state.[R4-GigabitEthernet0/0/0]interface Tunnel0/0/0[R4-Tunnel0/0/0]ip address 192.168.3.2 255.255.255.0[R4-Tunnel0/0/0]tunn[R4-Tunnel0/0/0]tunnel-protocol gre[R4-Tunnel0/0/0]source[R4-Tunnel0/0/0]source 45.1.1.1[R4-Tunnel0/0/0]destination 15.1.1.1[R4-Tunnel0/0/0]q[R4]rip 1[R4-rip-1]ver[R4-rip-1]version[R4-rip-1]version 2[R4-rip-1]net[R4-rip-1]network 192.168.4.0[R4-rip-1]network 192.168.3.0[R4-rip-1]q[R4]ip route-static 0.0.0.0 0 45.1.1.2[R4]Aug 12 2026 22:24:27-08:00 R4 %%01IFNET/4/LINK_STATE(l)[2]:The line protocol IPon the interface Tunnel0/0/0 has entered the UP state.[R4]acl number 2000[R4-acl-basic-2000]rule 5 per[R4-acl-basic-2000]rule 5 permit sour[R4-acl-basic-2000]rule 5 permit source 192.168.4.0 0.0.0.255[R4-acl-basic-2000]q[R4]interface GigabitEthernet0/0/0[R4-GigabitEthernet0/0/0]nat outbound 2000[R4-GigabitEthernet0/0/0]q[R4]q[R4]int g0/0/0[R4-GigabitEthernet0/0/0]ip add 45.0.0.4 24[R4-GigabitEthernet0/0/0]int l0[R4-LoopBack0]ip add 192.168.4.4 245、R5的配置Huawei]sysname R5[R5]interface Loopback0[R5-LoopBack0]ip address 5.5.5.5 255.255.255.0[R5-LoopBack0]interface Serial4/0/0[R5-Serial4/0/0]link-[R5-Serial4/0/0]link-protocol hdlcWarning: The encapsulation protocol of the link will be changed. Continue? [Y/N]:YAug 12 2026 22:28:52-08:00 R5 %%01IFNET/4/CHANGE_ENCAP(l)[0]:The user performedthe configuration that will change the encapsulation protocol of the link and then selected Y.[R5]interface Serial4/0/0[R5-Serial4/0/0]ip address 35.1.1.2 255.255.255.0[R5-Serial4/0/0]q[R5]interface Serial4/0/1[R5-Serial4/0/1]link-protocol ppp[R5-Serial4/0/1]ip address 15.1.1.2 255.255.255.0[R5-Serial4/0/1]Aug 12 2026 22:38:57-08:00 R5 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol PPPIPCP on the interface Serial4/0/1 has entered the UP state.[R5-Serial4/0/1]ppp authentication-mode pap[R5-Serial4/0/1]interface Serial3/0/1[R5-Serial3/0/1]link-protocol ppp[R5-Serial3/0/1]ip address 25.1.1.2 255.255.255.0[R5-Serial3/0/1]Aug 12 2026 22:39:35-08:00 R5 %%01IFNET/4/LINK_STATE(l)[1]:The line protocol PPPIPCP on the interface Serial3/0/1 has entered the UP state.[R5-Serial3/0/1]ppp authentication-mode chap[R5-Serial3/0/1]interface GigabitEthernet0/0/0[R5-GigabitEthernet0/0/0]ip address 45.1.1.2 255.255.255.0Aug 12 2026 22:39:47-08:00 R5 %%01IFNET/4/LINK_STATE(l)[2]:The line protocol IPon the interface GigabitEthernet0/0/0 has entered the UP state.[R5-GigabitEthernet0/0/0]q[R5]aaa[R5-aaa]loce[R5-aaa]loca[R5-aaa]local-user r1 passwor[R5-aaa]local-user r1 password cip[R5-aaa]local-user r1 password cipher 123456Info: Add a new user.[R5-aaa]loce[R5-aaa]loca[R5-aaa]local-user r1 servi[R5-aaa]local-user r1 service-type ppp[R5-aaa]local-user r2 password cipher 123456Info: Add a new user.[R5-aaa]local-user r2 service-type ppp[R5-aaa]q[R5]q配置各个PC测试私网互通测试访问公网3、NAT配置4、MGRE注册5、R1PAP认证6、R2CHAP认证7、接口状态用了display ip interface brief命令发现所有配置接口Physical和Protocol均为UP

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