- 配置下面的网络
- 要求如下
- 划分IP
- 配置area0区域的IP
- 配置area1区域的IP
- 配置area2区域的IP
- 配置area3区域的IP
- 配置area4区域的IP
- 配置RIP区域的IP
- AR3、AR5、AR6、AR7配置缺省
- MGRE环境
- 启动OSPF
- 减少更新量
- 配置NAT
- 加快收敛
- 手工认证
- 测试
实线表示的是路由器上环回地址所在的区域
- 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
- R3-R5/6/7为MGRE环境，R3为中心站点
- 整个OSPF环境IP基于172.16.0.0/16划分
- 所有设备均可访向R4的环回
- 减少LSA的更新量，加快收敏,保障更新安全
- 全网可达
总共六个区域，把/16的网段分出六块区域 172.16.0.0/16 总网段 借三位主机位给网络位 172.16.000 00000.0 172.16.0.0/19 AR0 172.16.000 00000.0 172.16.0.0/24 MA网络 172.16.000 00000.00000 000 172.16.0.0/29 172.16.0.8/29 172.16.0.16/29 172.16.0.24/29 ...... ...... 172.16.001 00000.0 172.16.32.0/19 AR1 172.16..001 00000.0 172.16.32.0/24 MA网络 172.16.001 00000.00000 000 172.16.32.0/29 172.16.32.8/29 172.16.32.16/29 172.16.32.24/29 ...... ...... 172.16.010 00000.0 172.16.64.0/19 AR2 172.16.010 00000.0 172.16.64.0/24 MA网络 172.16.010 00000.00000 000 172.16.64.0/29 172.16.010 00000.00001 000 172.16.64.8/29 172.16.64.16/29 ...... ...... 172.16.011 00000.0 172.16.96.0/19 AR3 172.16.011 00000.0 172.16.96.0/24 MA网络 172.16.011 00000.00000 000 172.16.96.0/29 172.16.011 00000.00001 000 172.16.96.8/29 172.16.96.16/29 ...... ...... 172.16.100 00000.0 172.16.128.0/19 AR4 172.16.100 00000.00000 000 172.16.128.0/24 MA网络 172.16.100 00000.00000 000 172.16.128.0/29 172.16.128.8/29 172.16.128.16/29 ...... ...... 172.16.101 00000.0 172.16.160.0/19 RIP 172.16.160.0/20 172.16.176.0/20 这两块用不到 172.16.110 00000.0 172.16.111 00000.0
配置area0区域的IP
# AR3 [r3]int s 4/0/0 [r3-Serial4/0/0]ip add 34.0.0.1 24 # AR4 [r4]int s 4/0/0 [r4-Serial4/0/0]ip add 34.0.0.2 24 [r4-Serial4/0/0]int s 4/0/1 [r4-Serial4/0/1]ip add 45.0.0.2 24 [r4-Serial4/0/1]int s 3/0/0 [r4-Serial3/0/0]ip add 46.0.0.2 24 [r4-Serial3/0/0]int g 0/0/0 [r4-GigabitEthernet0/0/0]ip add 47.0.0.2 24 [r4-GigabitEthernet0/0/0]int l 0 [r4-LoopBack0]ip add 4.4.4.4 24 # AR5 [r5]int s 4/0/0 [r5-Serial4/0/0]ip add 45.0.0.1 24 [r5-Serial4/0/0]int l 0 [r5-LoopBack0]ip add 172.16.0.9 29 # AR6 [r6]int s 4/0/0 [r6-Serial4/0/0]ip add 46.0.0.1 24 [r6-Serial4/0/0]int l 0 [r6-LoopBack0]ip add 172.16.0.17 29 # AR7 [r7]int g 0/0/0 [r7-GigabitEthernet0/0/0]ip add 47.0.0.1 24 [r7-GigabitEthernet0/0/0]int l 0 [r7-LoopBack0]ip add 172.16.0.25 29
配置area1区域的IP
# AR1 [r1]int g 0/0/0 [r1-GigabitEthernet0/0/0]ip add 172.16.32.1 29 [r1-GigabitEthernet0/0/0]int l 0 [r1-LoopBack0]ip add 172.16.32.9 29 #AR2 [r2]int g 0/0/0 [r2-GigabitEthernet0/0/0]ip add 172.16.32.2 29 [r2-GigabitEthernet0/0/0]int l 0 [r2-LoopBack0]ip add 172.16.32.17 29 #AR3 [r3]int g 0/0/0 [r3-GigabitEthernet0/0/0]ip add 172.16.32.3 29 [r3-GigabitEthernet0/0/0]int l 0 [r3-LoopBack0]ip add 172.16.32.25 29
配置area2区域的IP
# AR6 [r6]int g 0/0/0 [r6-GigabitEthernet0/0/0]ip add 172.16.64.1 29 # AR11 [r11]int g 0/0/0 [r11-GigabitEthernet0/0/0]ip add 172.16.64.2 29 [r11-GigabitEthernet0/0/0]int g 0/0/1 [r11-GigabitEthernet0/0/1]ip add 172.16.64.9 29 [r11-GigabitEthernet0/0/1]int l 0 [r11-LoopBack0]ip add 172.16.64.17 29 # AR12 [r12]int g 0/0/0 [r12-GigabitEthernet0/0/0]ip add 172.16.64.10 29
配置area3区域的IP
# AR7 [r7]int g 0/0/1 [r7-GigabitEthernet0/0/1]ip add 172.16.96.1 29 # AR8 [r8]int g 0/0/0 [r8-GigabitEthernet0/0/0]ip add 172.16.96.2 29 [r8-GigabitEthernet0/0/0]int g 0/0/1 [r8-GigabitEthernet0/0/1]ip add 172.16.96.9 29 [r8-GigabitEthernet0/0/1]int l 0 [r8-LoopBack0]ip add 172.16.96.17 29 # AR9 [r9]int g 0/0/0 [r9-GigabitEthernet0/0/0]ip add 172.16.96.10 29
配置area4区域的IP
# AR9 [r9]int g 0/0/1 [r9-GigabitEthernet0/0/1]ip add 172.16.128.1 29 [r9-GigabitEthernet0/0/1]int l 0 [r9-LoopBack0]ip add 172.16.128.9 29 # AR10 [r10]int g 0/0/0 [r10-GigabitEthernet0/0/0]ip add 172.16.128.2 29 [r10-GigabitEthernet0/0/0]int l 0 [r10-LoopBack0]ip add 172.16.128.17 29
配置RIP区域的IP
# 环回一 [r12]int l 0 [r12-LoopBack0]ip add 172.16.160.1 20 # 环回二 [r12-LoopBack0]int l 1 [r12-LoopBack1]ip add 172.16.176.1 20
AR3、AR5、AR6、AR7配置缺省
# AR3 [r3]ip route-static 0.0.0.0 0 34.0.0.2 # AR5 [r5]ip route-static 0.0.0.0 0 45.0.0.2 # AR6 [r6]ip route-static 0.0.0.0 0 46.0.0.2 # AR7 [r7]ip route-static 0.0.0.0 0 47.0.0.2
MGRE环境
# AR3上： [r3]int t 0/0/0 [r3-Tunnel0/0/0]ip add 172.16.0.1 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 t 0/0/0 [r5-Tunnel0/0/0]ip add 172.16.0.2 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 172.16.0.1 34.0.0.1 register # AR6 [r6]int t 0/0/0 [r6-Tunnel0/0/0]ip add 172.16.0.3 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 172.16.0.1 34.0.0.1 register # AR7 [r7]int t 0/0/0 [r7-Tunnel0/0/0]ip add 172.16.0.4 29 [r7-Tunnel0/0/0]tunnel-protocol gre p2mp [r7-Tunnel0/0/0]source g 0/0/0 [r7-Tunnel0/0/0]nhrp network-id 100 [r7-Tunnel0/0/0]nhrp entry 172.16.0.1 34.0.0.1 register
启动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 0.0.0.255 [r3-ospf-1]area 0 [r3-ospf-1-area-0.0.0.0]network 172.16.0.1 0.0.0.0 [r3]int t 0/0/0 [r3-Tunnel0/0/0]ospf network-type p2mp # AR5 [r5]ospf 1 router-id 5.5.5.5 [r5-ospf-1]area 0 [r5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255 [r5]int t 0/0/0 [r5-Tunnel0/0/0]ospf network-type p2mp # AR6 [r6]ospf 1 router-id 6.6.6.6 [r6-ospf-1]area 0 [r6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.0.255 [r6]int t 0/0/0 [r6-Tunnel0/0/0]ospf network-type p2mp [r6]ospf 1 [r6-ospf-1]a 2 [r6-ospf-1-area-0.0.0.2]network 172.16.64.1 0.0.0.0 # AR7 [r7]ospf 1 router-id 7.7.7.7 [r7-ospf-1]area 0 [r7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.0.255 [r7]int t 0/0/0 [r7-Tunnel0/0/0]ospf network-type p2mp [r7]ospf 1 [r7-ospf-1]a 3 [r7-ospf-1-area-0.0.0.3]network 172.16.96.1 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 172.16.96.0 0.0.0.255 # AR9 [r9]ospf 1 router-id 9.9.9.9 [r9-ospf-1]a 3 [r9-ospf-1-area-0.0.0.3]network 172.16.96.10 0.0.0.0 [r9-ospf-1]a 4 [r9-ospf-1-area-0.0.0.4]network 172.16.128.0 0.0.0.255 # AR10 [r10]ospf 1 router-id 10.10.10.10 [r10-ospf-1]a 4 [r10-ospf-1-area-0.0.0.4]network 172.16.128.0 0.0.0.255 # AR11 [r11]ospf 1 router-id 11.11.11.11 [r11-ospf-1]a 2 [r11-ospf-1-area-0.0.0.2]network 172.16.64.0 0.0.0.255 # AR12 [r12]ospf 1 router-id 12.12.12.12 [r12-ospf-1]a 2 [r12-ospf-1-area-0.0.0.2]network 172.16.64.10 0.0.0.0 [r12]rip [r12-rip-1]v 2 [r12-rip-1]network 172.16.0.0
这里的AR10是没有其他区域的路由的，我们要在AR9上做 双向重发布
# 把之前的宣告的删了 [r9]ospf 1 [r9-ospf-1]area 4 [r9-ospf-1-area-0.0.0.4]undo network 172.16.128.0 0.0.0.255 # 在新的OSPF进程中宣告 [r9]ospf 2 router-id 9.9.9.9 [r9-ospf-2]area 4 [r9-ospf-2-area-0.0.0.4]network 172.16.128.0 0.0.0.255
减少更新量
# AR1 [r1]ospf 1 [r1-ospf-1]area 1 [r1-ospf-1-area-0.0.0.1]stub # AR2 [r2]ospf 1 [r2-ospf-1]area 1 [r2-ospf-1-area-0.0.0.1]stub # AR3 [r3]ospf 1 [r3-ospf-1]area 1 [r3-ospf-1-area-0.0.0.1]stub no-summary [r3-ospf-1-area-0.0.0.1]abr-summary 172.16.32.0 255.255.224.0 [r3]ip route-static 172.16.32.0 24 NULL 0 # AR6 [r6]ospf 1 [r6-ospf-1]a 2 [r6-ospf-1-area-0.0.0.2]nssa no-summary [r6-ospf-1-area-0.0.0.2]abr-summary 172.16.64.0 255.255.224.0 [r6]ip route-static 172.16.64.0 24 null 0 # AR7 [r7]ospf 1 [r7-ospf-1]a 3 [r7-ospf-1-area-0.0.0.3]nssa no-summary [r7-ospf-1-area-0.0.0.3]abr-summary 172.16.96.0 255.255.224.0 [r7]ip route-static 172.16.96.0 24 NULL 0 # 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 [r9-ospf-1]asbr-summary 172.16.128.0 255.255.224.0 [r9]ip route-static 172.16.128.0 24 NULL 0 # 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 [r12-ospf-1]asbr-summary 172.16.160.0 255.255.224.0 [r12]ip route-static 172.16.160.0 24 NULL 0
AR9给AR10发缺省
[r9]ospf 2 [r9-ospf-2]default-route-advertise
配置NAT
# AR3 [r3]acl 2000 [r3-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255 [r3-acl-basic-2000]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-acl-basic-2000]int s 4/0/0 [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-acl-basic-2000]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-acl-basic-2000]int g 0/0/0 [r7-GigabitEthernet0/0/0]nat outbound 2000
加快收敛
# AR3 [R3]int t 0/0/0 [R3-Tunnel0/0/0]ospf timer hello 5 # AR5 [R5]int t 0/0/0 [R5-Tunnel0/0/0]ospf timer hello 5 # AR6 [R6]int t 0/0/0 [R6-Tunnel0/0/0]ospf timer hello 5 # AR7 [R7]int t 0/0/0 [R7-Tunnel0/0/0]ospf timer hello 5
手工认证
[r1]ospf 1 [r1-ospf-1]a 1 [r1-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123456 [r2]ospf 1 [r2-ospf-1]a 1 [r2-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123456 [r3]ospf 1 [r3-ospf-1]a 1 [r3-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher 123456
测试
ok
