1.拓扑
2.需求分析
1、R4为ISP,其上只能配置IP地址;R4与其他所有直连设备间均使用公有IP。
2、R3、R5、R6、R7为MGRE环境,R3为中心站点。
3、整个OSPF环境IP地址基于172.16.0.0/16划分。
4、减少LSA的更新量,加快收敛,保证更新安全。
5、全网可达。
3.配置
配置IP地址划分
172.16.0.0/19 — area0
172.16.32.0/19 — area1
172.16.64.0/19 — area2
172.16.96.0/19 —area3
172.16.128.0/19 — area4
公网IP地址的配置
<Huawei>system-view
[Huawei]sysname r4
[r4]interface Serial 4/0/0
[r4-Serial4/0/0]ip add 34.1.1.2 24
[r4-Serial4/0/0]int s4/0/1
[r4-Serial4/0/1]ip add 45.1.1.2 24
[r4-Serial4/0/0]int s3/0/0
[r4-Serial3/0/0]ip add 46.1.1.2 24
[r4-Serial3/0/0]int s3/0/1
[r4-Serial3/0/1]ip add 47.1.1.2 24[Huawei]sysname r3
[r3]int s3/0/0
[r3-Serial3/0/0]ip add 34.1.1.1 24
[Huawei]sysname r5
[r5]int s4/0/0
[r5-Serial4/0/0]ip add 45.1.1.1 24
[Huawei]sysname r6
[r6]int s4/0/0
[r6-Serial4/0/0]ip add 46.1.1.1 24
[Huawei]sysname r7
[r7]int s4/0/0
[r7-Serial4/0/0]ip add 47.1.1.1 24
配置静态路由,使公网全网可达
[r3]ip route-static 0.0.0.0 0 34.1.1.2
[r5]ip route-static 0.0.0.0 0 45.1.1.2
[r6]ip route-static 0.0.0.0 0 46.1.1.2
[r7]ip route-static 0.0.0.0 0 47.1.1.2
配接口IP环回(area1-area4)
AR1
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip a 172.16.33.1 29
[r1-GigabitEthernet0/0/0]int lo0
[r1-LoopBack0]ip a 172.16.34.1 24
AR2
[r2]int g 0/0/0
[r2-GigabitEthernet0/0/0]ip a 172.16.33.2 29
[r2-GigabitEthernet0/0/0]int lo0
[r2-LoopBack0]ip a 172.16.35.1 24
AR3
[r3]int g0/0/0
[r3-GigabitEthernet0/0/0]ip a 172.16.33.3 29
[r3-GigabitEthernet0/0/0]int lo0
[r3-LoopBack0]ip a 172.16.36.1 24
AR6
[r6]int g0/0/0
[r6-GigabitEthernet0/0/0]ip a 172.16.65.1 29
AR7
[r7]int g 0/0/1
[r7-GigabitEthernet0/0/1]ip a 172.16.97.1 29
AR8
[r8]int g0/0/0
[r8-GigabitEthernet0/0/0]ip a 172.16.97.2 29
[r8-GigabitEthernet0/0/0]int lo0
[r8-LoopBack0]ip a 172.16.98.1 24
[r8-LoopBack0]int g 0/0/1
[r8-GigabitEthernet0/0/1]ip a 172.16.97.9 29
AR9
[r9]int g0/0/0
[r9-GigabitEthernet0/0/0]ip a 172.16.97.10 29
[r9-GigabitEthernet0/0/0]int g0/0/1
[r9-GigabitEthernet0/0/1]ip a 172.16.129.1 29
[r9-GigabitEthernet0/0/1]int lo0
[r9-LoopBack0]ip a 172.16.130.1 24
AR10
[r10]int g0/0/0
[r10-GigabitEthernet0/0/0]ip a 172.16.129.2 29
[r10-GigabitEthernet0/0/0]int lo0
[r10-LoopBack0]ip a 172.16.131.1 24
AR11
[r11]int g 0/0/0
[r11-GigabitEthernet0/0/0]ip a 172.16.65.2 29
[r11-GigabitEthernet0/0/0]int lo0
[r11-LoopBack0]ip a 172.16.66.1 24
[r11-GigabitEthernet0/0/1]ip a 172.16.65.9 29
AR12
[r12]int g0/0/0
[r12-GigabitEthernet0/0/0]ip a 172.16.65.10 29
[r12]int lo0
[r12-LoopBack0]ip a 172.16.160.1 20
[r12-LoopBack0]int lo1
[r12-LoopBack1]ip a 172.16.176.1 20
配接口IP环回缺省(area0)
AR3
[r3]int s 4/0/0
[r3-Serial4/0/0]ip a 34.0.0.1 24
[r3]ip route-static 0.0.0.0 0 34.0.0.2
AR4
[isp]int s 4/0/0
[isp-Serial4/0/0]ip a 34.0.0.2 24
[isp-Serial4/0/0]int s 3/0/0
[isp-Serial3/0/0]ip a 46.0.0.2 24
[isp-Serial3/0/0]int s 4/0/1
[isp-Serial4/0/1]ip a 45.0.0.2 24
[isp-Serial4/0/1]int g0/0/0
[isp-GigabitEthernet0/0/0]ip a 47.0.0.2 24
[isp-GigabitEthernet0/0/0]int lo0
[isp-LoopBack0]ip a 4.4.4.4 24
AR5
[r5]int s 4/0/0
[r5-Serial4/0/0]ip a 45.0.0.1 24
[r5-Serial4/0/0]int lo0
[r5-LoopBack0]ip a 172.16.2.1 24
[r5]ip route-static 0.0.0.0 0 45.0.0.2
AR6
[r6]int s 4/0/0
[r6-Serial4/0/0]ip a 46.0.0.1 24
[r6-Serial4/0/0]int lo0
[r6-LoopBack0]ip a 172.16.3.1 24
[r6]ip route-static 0.0.0.0 0 46.0.0.2
AR7
[r7]int g0/0/0
[r7-GigabitEthernet0/0/0]ip a 47.0.0.1 24
[r7-GigabitEthernet0/0/0]int lo0
[r7-LoopBack0]ip a 172.16.4.1 24
[r7]ip route-static 0.0.0.0 0 47.0.0.2
R3 R5 R6 R7 MGRE
AR3
[r3]int t 0/0/0[r3-Tunnel0/0/0]ip a 172.16.1.1 29
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp
[r3-Tunnel0/0/0]source 34.0.0.1
[r3-Tunnel0/0/0]nhrp network-id 100
[r3-Tunnel0/0/0]nhrp entry multicast dynamic
AR5
[r5]int t0/0/0
[r5-Tunnel0/0/0]ip a 172.16.1.2 29
[r5-Tunnel0/0/0]tunnel-protocol gre p2mp
[r5-Tunnel0/0/0]source Serial 4/0/0
[r5-Tunnel0/0/0]nhrp network-id 100
[r5-Tunnel0/0/0]nhrp entry 172.16.1.1 34.0.0.1 register
AR6
[r6]int t0/0/0
[r6-Tunnel0/0/0]ip a 172.16.1.3 29
[r6-Tunnel0/0/0]tunnel-protocol gre p2mp
[r6-Tunnel0/0/0]source Serial 4/0/0
[r6-Tunnel0/0/0]nhrp network-id 100
[r6-Tunnel0/0/0]nhrp entry 172.16.1.1 34.0.0.1 register
AR7
[r7]int t0/0/0
[r7-Tunnel0/0/0]ip a 172.16.1.4 29
[r7-Tunnel0/0/0]tunnel-protocol gre p2mp
[r7-Tunnel0/0/0]source GigabitEthernet 0/0/0
[r7-Tunnel0/0/0]nhrp network-id 100
[r7-Tunnel0/0/0]nhrp entry 172.16.1.1 34.0.0.1 register
OSPF
AR1
[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]a 1
[r1-ospf-1-area-0.0.0.1]network 172.16.0.0 0.0.255.255
AR2
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]a 1
[r2-ospf-1-area-0.0.0.1]network 172.16.0.0 0.0.255.255
AR3
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]a 1
[r3-ospf-1-area-0.0.0.1]network 172.16.32.0 0.0.7.255
[r3-ospf-1-area-0.0.0.1]a 0
[r3-ospf-1-area-0.0.0.0]network 172.16.1.1 0.0.0.0
AR5
[r5]ospf 1 router-id 5.5.5.5
[r5-ospf-1]a 0
[r5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
AR6
[r6]ospf 1 router-id 6.6.6.6
[r6-ospf-1]a 0
[r6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.3.255
[r6-ospf-1-area-0.0.0.0]a 2
[r6-ospf-1-area-0.0.0.2]network 172.16.65.1 0.0.0.0
AR7
[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1]a 0
[r7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.7.255
[r7-ospf-1-area-0.0.0.0]a 3
[r7-ospf-1-area-0.0.0.3]network 172.16.97.1 0.0.0.0
AR8
[r8]ospf 1 router-id 8.8.8.8
[r8-ospf-1]a 3
[r8-ospf-1-area-0.0.0.3]network 172.16.0.0 0.0.255.255
AR9
[r9]ospf 1 router-id 9.9.9.9
[r9-ospf-1]a 3
[r9-ospf-1-area-0.0.0.3]network 172.16.97.10 0.0.0.0
[r9-ospf-1-area-0.0.0.3]a 4
[r9-ospf-1-area-0.0.0.4]network 172.16.128.0 0.0.3.255
AR10
[r10]ospf 1 router-id 10.10.10.10
[r10-ospf-1]a 4
[r10-ospf-1-area-0.0.0.4]network 172.16.0.0 0.0.255.255
AR11
[r11]ospf 1 router-id 11.11.11.11
[r11-ospf-1]a 2
[r11-ospf-1-area-0.0.0.2]network 172.16.0.0 0.0.255.255
AR12
[r12]ospf 1 router-id 12.12.12.12
[r12-ospf-1]a 2
[r12-ospf-1-area-0.0.0.2]network 172.16.65.10 0.0.0.0
[r12]rip 1
[r12-rip-1]v 2
[r12-rip-1]network 172.16.0.0
[r12]ospf 1
[r12-ospf-1]import-route rip 1
更改tunnel接口类型
AR3
[r3]int t0/0/0
[r3-Tunnel0/0/0]ospf network-type p2mp
AR5
[r5]int t0/0/0
[r5-Tunnel0/0/0]ospf network-type p2mp
AR6
[r6]int t0/0/0
[r6-Tunnel0/0/0]ospf network-type p2mp
AR7
[r7]int t0/0/0
[r7-Tunnel0/0/0]ospf network-type p2mp
area4更改为域外路由
AR9
[r9]ospf 1
[r9-ospf-1]a 4
[r9-ospf-1-area-0.0.0.4]undo network 172.16.128.0 0.0.3.255
[r9-ospf-1-area-0.0.0.4]q
[r9-ospf-1]undo a 4
[r9-ospf-1]q
[r9]ospf 2 rout
[r9]ospf 2 router-id 9.9.9.9
[r9-ospf-2]a 4
[r9-ospf-2-area-0.0.0.4]net
[r9-ospf-2-area-0.0.0.4]network 172.16.128.0 0.0.3.255
[r9]ospf 1
[r9-ospf-1]import-route ospf 2
[r9]ospf 2
[r9-ospf-2]default-route-advertise
域间域外路由汇总
AR3
[r3]ospf 1
[r3-ospf-1]a 1
[r3-ospf-1-area-0.0.0.1]abr-summary 172.16.32.0 255.255.224.0
AR6
[r6]ospf 1
[r6-ospf-1]a 2
[r6-ospf-1-area-0.0.0.2]abr-summary 172.16.64.0 255.255.224.0
AR7
[r7]ospf 1
[r7-ospf-1]a 3
[r7-ospf-1-area-0.0.0.3]abr-summary 172.16.96.0 255.255.224.0
AR12
[r12]ospf 1
[r12-ospf-1]asbr-summary 172.16.160.0 255.255.224.0
AR9
[r9]ospf 1
[r9-ospf-1]asbr-summary 172.16.128.0 255.255.224.0
area1 area2 area3做成特殊区域
AR1
[r1]ospf 1
[r1-ospf-1]a 1
[r1-ospf-1-area-0.0.0.1]stub
AR2
[r1]ospf 1
[r1-ospf-1]a 1
[r1-ospf-1-area-0.0.0.1]stub
AR3
[r3]ospf 1
[r3-ospf-1]a 1
[r3-ospf-1-area-0.0.0.1]stub no-summary
AR6
[r6]ospf 1
[r6-ospf-1]a 2
[r6-ospf-1-area-0.0.0.2]nssa no-summary
AR11
[r11]ospf 1
[r11-ospf-1]a 2
[r11-ospf-1-area-0.0.0.2]nssa
AR12
[r12]ospf 1
[r12-ospf-1]a 2
[r12-ospf-1-area-0.0.0.2]nssa
AR7
[r7]ospf 1
[r7-ospf-1]a 3
[r7-ospf-1-area-0.0.0.3]nssa no-summary
AR8
[r8]ospf 1
[r8-ospf-1]a 3
[r8-ospf-1-area-0.0.0.3]nssa
AR9
[r9]ospf 1
[r9-ospf-1]a 3
[r9-ospf-1-area-0.0.0.3]nssa
空接口防环
AR3
[r3]ip route-static 172.16.32.0 19 NULL 0
AR6
[r6]ip route-static 172.16.64.0 19 NULL 0
AR7
[r7]ip route-static 172.16.96.0 19 NULL 0
AR12
[r12]ip route-static 172.16.160.0 19 NULL 0
AR9
[r9]ip route-static 172.16.128.0 19 NULL 0
NAT
AR3
[r3]acl 2000
[r3-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r3]int s 4/0/0
[r3-Serial4/0/0]nat outbound 2000
AR5
[r5]acl 2000
[r5-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r5]int s4/0/0
[r5-Serial4/0/0]nat outbound 2000
AR6
[r6]acl 2000
[r6-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r6]int s 4/0/0
[r6-Serial4/0/0]nat outbound 2000
AR7
[r7]acl 2000
[r7-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r7]int g0/0/0
[r7-GigabitEthernet0/0/0]nat outbound 2000
区域认证
AR1
[r1]ospf 1
[r1-ospf-1]a 1
[r1-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123456
AR2
[r1]ospf 1
[r1-ospf-1]a 1
[r1-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123456
AR3
[r3]ospf 1
[r3-ospf-1]a 1
[r3-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123456
加速收敛
AR3
[r3]int t0/0/0
[r3-Tunnel0/0/0]ospf timer hello 10
AR5
[r5]int t0/0/0
[r5-Tunnel0/0/0]ospf timer hello 10
AR6
[r6]int t0/0/0
[r6-Tunnel0/0/0]ospf timer hello 10
AR7
[r7]int t0/0/0
[r7-Tunnel0/0/0]ospf timer hello 10