1、CCIE学习OSPF配置 配置拓扑图: 配置要求: 1)证明在不同路由器上OSPF的PID不用匹配也可以建立邻接关系。 2)使用network命令来匹配借口,从而在网络10.0.0.0内触发邻接路由器发现进程。 3)配置S1的RID为7.7.7.7。 4)在骨干LAN上设置合适的优先权值以使得 CCIE学习——OSPF配置 配置拓扑图: 配置要求: 1)证明在不同路由器上OSPF的PID不用匹配也可以建立邻接关系。 2)使用network命令来匹配借口,从而在网络10.0.0.0内触发邻接路由器发现进程。 3)配置S1的RID为7.7.7
2、7。 4)在骨干LAN上设置合适的优先权值以使得S1和S2成为DR/BDR。 5)在骨干LAN上配置dead间隔为最小(1秒),它是hello间隔的4倍,所以hello间隔为250毫秒。 6)配置区域3为完全NSSA区域,区域4为完全桩区域,区域5为桩区域。 具体配置: 1)R1的配置: interface FastEthernet0/0 ip address 10.1.1.1 255.255.255.0 ip ospf dead-interval minimal hello-multipli
3、er 4 ! router ospf 1 area 3 nssa no-summary area 4 stub no-summary area 5 stub network 10.1.0.0 0.0.255.255 area 0 network 10.3.0.0 0.0.255.255 area 3 network 10.4.0.0 0.0.255.255 area 4 network 10.5.0.0 0.0.255.255 area 5 2)R2的配置:
4、 interface FastEthernet0/0 ip address 10.1.1.2 255.255.255.0 ip ospf dead-interval minimal hello-multiplier 4 ! router ospf 2 area 5 stub network 10.1.0.0 0.0.255.255 area 0 network 10.5.25.2 0.0.0.0 area 5 3)R3的配置: router ospf 1 are
5、a 3 nssa no-summary network 10.0.0.0 0.255.255.255 area 3 4)R4的配置: router ospf 1 area 4 stub no-summary network 10.0.0.0 0.255.255.255 area 4 5)S1的配置: interface Vlan1 ip address 10.1.1.3 255.255.255.0 ip ospf dead-interval minimal hello-multipli
6、er 4 ip ospf priority 255 ! router ospf 1 router-id 7.7.7.7 network 10.1.0.0 0.0.255.255 area 0 6)S2的配置: interface Vlan1 ip address 10.1.1.4 255.255.255.0 ip ospf dead-interval minimal hello-multiplier 4 ip ospf priority 254 ! router os
7、pf 1 network 10.0.0.0 0.255.255.255 area 0 ●OSPF的开销以及怎样重启OSPF进程 IOS确定OSPF接口开销的方法: 1)使用neighbor neighbor cost value命令对每台邻接路由器设置开销(对于允许使用neighbor命令的网络类型)。 2)使用ip ospf cost value接口子命令对每个接口设置开销。 3)开销默认为OSPF参考带宽(默认108)/接口带宽(bps)。 4)在OSPF进程下使用ospf auto-cost reference-ban
8、dwidth value命令设置OSPF参考带宽。 注意:IOS的接口带宽的单位是kbps,而auto-cost reference-bandwidth命令的单位是Mbps。当两数相除时,所得结果会向下取整,如100/1.544=64。 如果要重启OSPF进程,可以使用clear ip ospf process命令,路由器会要求你确认,输入“y”即表示确认重启。 ●OSPF网络命令的替代 从Cisco IOS 12.3(11)T开始,OSPF的配置中可以完全省去network命令部分,取而代之的是ip ospf process-id area
9、 area-id接口子命令。新命令可在接口上激活OSPF并选择区域。例如,前面例子中的network 10.3.0.0 0.0.255.255 area 3命令可以用S0/0.1和e0/0接口上的命令ip ospf 1 area 3替换。 如果使用了从IP地址,network和ip ospf area命令会有一些细微的差别。当使用network命令的时候,OSPF只将匹配命令的从IP子网广播为桩网络,而ip ospf area命令则使所配置接口上的所有从子网广播为桩网络(除非配置了secondaries none参数)。 区域间和外部路由汇总案例 主题关键词:无线网络破解 CIS
10、CO允许对地址进行汇总,以通过限制区域间通告的路由来达到节省资源的目的。 CISCO路由器支持两种类型的地址汇总:区域间汇总和外部路由汇总。区域间汇总用于在区域间汇总地址,而外部汇总用于收集到某个Cisco CCNP培训域中的一系列外部路由的汇总。 5.jpg (30.79 KB)2009-10-25 20:38路由器A将通过V。35交叉电缆连接到路由器B上。路由器B作为DCE为路由器A提供时钟。B和C通过以太网集线器连接。C通过交叉电缆连接到 D上。C作为DCE为D提供时钟。D和E通过以太网集线器连接BT无线网络破解教程B和C上的第二个以太网接口将不连到任何地方,所以需要禁用其活跃状 态
11、这里使用以太网接口代替回送接口的原因是,回送接口在区域边界间是作为/32位网络通告的。 RIP运行D和E之间;E将通告所有连接的子网。D将把学习到的RIP路由重分布到OSPF中,这里不使用相互的重分布,因为不需要它来验证汇总。但是, 如果你希望E能够看见OSPF网络,就需要加上它。所有IP地址分配如图。 //router a int e0 ip addr 192.1.1.2 255.255.255.0 int s0 ip addr 152.1.2.1 255.255.255.252 router ospf 64 network 152.1.2.0 0.0.0.255 area 1
12、 //指定运行OSPF的接口以及该接口位于的区域 //router b int e1/0 ip addr 152.1.1.129 255.255.255.192 no keepalive int e0/0 ip addr 152.1.1.1 255.255.255.128 int s0/0 ip addr 152.1.2.2 255.255.255.252 no ip direct-broadcast no ip mroute-cache no fair-queue clockrate 1000000 router ospf 64 netw 152.1.1
13、0 0.0.0.255 area 0 netw 152.1.2.0 0.0.0.255 area 1 //router c int e1/0 ip addr 152.1.1.193 255.255.255.192 no ip direct-broadcast no keepalive int e0/0思科培训团购 ip addr 152.1.1.2 255.255.255.128 no ip direct-broadcast int s0/0 ip addr 152.1.3.2 255.255.255.252 no ip direct-broadcast
14、no ip mroute-cache no fair-queue clockrate 1000000 router ospf 64 netw 152.1.1.0 0.0.0.255 area 0 netw 152.1.3.0 0.0.0.255 area 2 //router d int e0 ip addr 130.1.4.1 255.255.255.0 no ip direct-broadcast int s0 ip addr 152.1.3.1 255.255.255.252 no ip direct-broadcast ip ospf interfa
15、ce-retry 0 router ospf 64 redistribute rip metric 10 sunets //重分布RIP到OSPF中(对于此实验,仅仅只需要一个方向上的重分布) network 152.1.3.0 0.0.0.255 area 2 router rip network 130.1.0.0Cisco 模拟器 //router e int lo0 ip addr 130.1.1.1 255.255.255.0 no ip direct-broadcast int lo1 ip addr 130.1.2.1 255.255.255.0 n
16、o ip direct-broadcast int lo2 ip addr 130.1.3.1 255.255.255.0 no ip direct-broadcast int lo3 ip addr 130.1.5.1 255.255.255.0 router rip netw 130.1.0.0 //监视和测试配置 show ip ro检测一下路由表 O IA 152.1。1.128/26 [110/65] VIA 152.1.2.2 SERIAL 0 O IA 512.1.1.192/26 [110/94] VIA 152.1.2.2 SERIAL 0 因为所
17、有它些网络都是区域0的一部分。所以区域边界路由器ABR B和C都可以将网络汇总到一个项目152.1。1.0/24中: routerb# router ospf 64思科模拟器 routerb(config-router)# area 0 range 152.1.1.0 255.255.255.0 routerc# router ospf 64 routerc(config-router)# area range 152.1.1.0 255.255.255.0 show ip ro O IA 152.1.1.0/24 [110/84]VIA 152.1.2.2 SERIAL 0 路由器D做为A
18、SBR,将把E学到的RIP重分布到OSPF中。使用SHOW IP RO 130.1.0.0/24 IS SUBNETTED, 7 SUBNETS O E2 130.1。3.0 O E2 130.1。2.0 O E2 130.1。1.0 O E2 130.1。7.0 O E2 130.1。6.0 O E2 130.1。5.0 O E2 130.1。4.0 routerd# router ospf 64 routerd(config-router)# summary-address 130.1.0.0 255.255.248.0 sh ip ro 130.1.0.0/21 IS SU
19、BNETTED,1 SUBNETS O E2 130.1.0.0Cisco ios 下载 思科论坛 Cisco 首先我们还是看一看今天实验的拓扑图吧: 帧中继链接详细拓扑图: 看一看在PacketTracert中我们是如何配置帧中继服务的吧: 接下来看看路由器是如何配置的: 路由器R1的配置: R1#sh run Building configuration... Current configuration : 908 bytes ! version 12.3 no service password-encryption ! hostn
20、ame R1 ! ! ! ! interface FastEthernet0/0 ip address 192.168.20.254 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 no ip address duplex auto speed auto shutdown ! interface Serial0/0/0 no ip address encapsulation frame-relay ietf ! interface Serial0/0/0.
21、12 point-to-point ip address 192.168.3.1 255.255.255.0 frame-relay interface-dlci 102 ! interface Serial0/0/0.13 point-to-point ip address 192.168.1.1 255.255.255.0 frame-relay interface-dlci 103 ! interface Vlan1 no ip address shutdown ! router eigrp 100 network 192.168.20.0 n
22、etwork 192.168.1.0 network 192.168.3.0 auto-summary ! ip classless ! ! ip dhcp excluded-address 192.168.20.200 192.168.20.254 ! ip dhcp pool network 192.168.20.0 255.255.255.0 default-router 192.168.20.254 dns-server 192.168.20.251 ! line con 0 line vty 0 4 login ! ! end 路
23、由器R2的配置: R2#sh run Building configuration... Current configuration : 908 bytes ! version 12.3 no service password-encryption ! hostname R2 ! ! ! ! interface FastEthernet0/0 ip address 192.168.40.254 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 no ip address
24、 duplex auto speed auto shutdown ! interface Serial0/0/0 no ip address encapsulation frame-relay ietf ! interface Serial0/0/0.21 point-to-point ip address 192.168.3.2 255.255.255.0 frame-relay interface-dlci 201 ! interface Serial0/0/0.23 point-to-point ip address 192.168.4.1 2
25、55.255.255.0 frame-relay interface-dlci 203 ! interface Vlan1 no ip address shutdown ! router eigrp 100 network 192.168.3.0 network 192.168.4.0 network 192.168.40.0 auto-summary ! ip classless ! ! ip dhcp excluded-address 192.168.40.200 192.168.40.254 ! ip dhcp pool netwo
26、rk 192.168.40.0 255.255.255.0 default-router 192.168.40.254 dns-server 192.168.20.251 ! line con 0 line vty 0 4 login ! ! end 路由器R3的配置: R3#sh run Building configuration... Current configuration : 908 bytes ! version 12.3 no service password-encryption ! hostname R3 ! ! ! !
27、interface FastEthernet0/0 ip address 192.168.30.254 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 no ip address duplex auto speed auto shutdown ! interface Serial0/0/0 no ip address encapsulation frame-relay ietf ! interface Serial0/0/0.31 point-to-point
28、ip address 192.168.1.2 255.255.255.0 frame-relay interface-dlci 301 ! interface Serial0/0/0.32 point-to-point ip address 192.168.4.2 255.255.255.0 frame-relay interface-dlci 302 ! interface Vlan1 no ip address shutdown ! router eigrp 100 network 192.168.30.0 network 192.168.4.0
29、 network 192.168.1.0 auto-summary ! ip classless ! ! ip dhcp excluded-address 192.168.30.200 192.168.30.254 ! ip dhcp pool network 192.168.30.0 255.255.255.0 default-router 192.168.30.254 dns-server 192.168.20.251 ! line con 0 line vty 0 4 login ! ! end 路由器的配置就算是完成了。 在前面几篇文
30、章中我介绍了PacketTracert中服务器的设置,再此不再赘述,在该实验中DNS服务器IP为:192.168.20.251;WEB服务器的IP地址为:192.168.20.253([url][/url])。 下面看看路由表吧: R1: R1#SH IP ROUTE Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF
31、 NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic download
32、ed static route Gateway of last resort is not set C 192.168.1.0/24 is directly connected, Serial0/0/0.13 C 192.168.3.0/24 is directly connected, Serial0/0/0.12 D 192.168.4.0/24 [90/2681856] via 192.168.3.2, 01:01:01, Serial0/0/0.12 [90/2681856] via 192.168.1.2, 01:0
33、0:36, Serial0/0/0.13 C 192.168.20.0/24 is directly connected, FastEthernet0/0 D 192.168.30.0/24 [90/2172416] via 192.168.1.2, 01:00:36, Serial0/0/0.13 D 192.168.40.0/24 [90/2172416] via 192.168.3.2, 01:00:58, Serial0/0/0.12 R2: R2#SH IP ROUTE Codes: C - connected, S - static, I - I
34、GRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS leve
35、l-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route Gateway of last resort is not set D 192.168.1.0/24 [90/2681856] via 192.168.3.1, 01:01:37, Serial0/0/0.21 [90/2681856] via 192.168.4.2,
36、01:01:15, Serial0/0/0.23 C 192.168.3.0/24 is directly connected, Serial0/0/0.21 C 192.168.4.0/24 is directly connected, Serial0/0/0.23 D 192.168.20.0/24 [90/2172416] via 192.168.3.1, 01:01:37, Serial0/0/0.21 D 192.168.30.0/24 [90/2172416] via 192.168.4.2, 01:01:17, Serial0/0/0.23 C
37、 192.168.40.0/24 is directly connected, FastEthernet0/0 R3: R3# R3#SH IP ROUTE Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type
38、 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route Gateway of last resort is not set
39、 C 192.168.1.0/24 is directly connected, Serial0/0/0.31 D 192.168.3.0/24 [90/2681856] via 192.168.4.1, 01:02:15, Serial0/0/0.32 [90/2681856] via 192.168.1.1, 01:02:08, Serial0/0/0.31 C 192.168.4.0/24 is directly connected, Serial0/0/0.32 D 192.168.20.0/24 [90/2172
40、416] via 192.168.1.1, 01:02:08, Serial0/0/0.31 C 192.168.30.0/24 is directly connected, FastEthernet0/0 D 192.168.40.0/24 [90/2172416] via 192.168.4.1, 01:02:15, Serial0/0/0.32 通过对路由表的观察我们知道网络已经联通了~ 最后我们就在这个模拟器中小小应用一把吧:用PC0访问[url][/url](192.168.1.253)。 实验:OSPF高级配置(三)绝对末节区域 2009-06-2
41、6 02:08:38 本篇只介绍绝对末节区域的配置,及实验结果显示。如需查看之前配置,可参看本专题前两篇文章(一)、(二)。 拓扑图: 将区域1配置为绝对末节区域,要R2、R3、R4均设置为末节路由器,并且R2不能转发汇总信息到区域1内(只通告给R3、R4默认路由)。 路由器配置: R2: R2(config)#router ospf 1 R2(config-router)#area 1 stub no-summary R3: R3(config)#router ospf 1 R3(config-router)#area 1 stub R4: R4(config)#route
42、r ospf 1 R4(config-router)#area 1 stub 查看末节区域内的路由表: R3#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF exte
43、rnal type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is 192.168.17.1 to network
44、 0.0.0.0 C 192.168.30.0/24 is directly connected, FastEthernet1/0 C 192.168.17.0/24 is directly connected, FastEthernet0/0 O*IA 0.0.0.0/0 [110/2] via 192.168.17.1, 00:06:56, FastEthernet0/0 R4#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, E
45、X - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - can
46、didate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is 192.168.30.1 to network 0.0.0.0 C 192.168.30.0/24 is directly connected, FastEthernet0/0 O 192.168.17.0/24 [110/2] via 192.168.30.1, 00:07:13, FastEthernet0/0 O*IA 0.0.0.
47、0/0 [110/3] via 192.168.30.1, 00:07:13, FastEthernet0/0 [/img].. 类别:路由|阅读(232)|回复(1)|赞(0)阅读全文>> 原创 实验:OSPF高级配置(二)路由汇总 2009-06-26 01:53:00 接上篇《实验:OSPF高级配置(一)连通性目标实现》本片主要介绍OSPF地址汇总 在ABR(R2)和ASBR(R5)上实现路由汇总: 路由器关键配置: R2: R2(config)#router ospf 1 R2(config-router)#area 1 range 192.168.16
48、0 0.0.15.255 advertise R5: R5(config)#router ospf 1 R5(config-router)#summary-address 192.168.64.0 255.255.240.0 查看路由汇总会的路由表: R1: R1#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1
49、 OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is not set C 192.168.10.0/24 is directly connected, FastEthernet0/0 C 192.168.1.0/24 is directly connected, FastEthernet1/0 O E2 192.168.64.0/20 [110/20] via 192.168.1.2, 00:02:15, Fa






