協定遷移分析

 有時候機關網絡更新需要把路由協定遷移如：rip向ospf  rip向eigrp 我們這裡就好好說下這個問題

如圖所示：我們把原來的rip協定遷移到ospf

<a href="http://blog.51cto.com/attachment/201010/111234500.png" target="_blank"></a>

首先完成初始配置

interface Loopback0

 ip address 1.1.1.1 255.255.255.0

!

interface Serial0/0

 ip address 192.168.1.1 255.255.255.0

 serial restart-delay 0

 no fair-queue

interface Serial0/1

 ip address 192.168.2.1 255.255.255.0

 encapsulation frame-relay

 no arp frame-relay

 frame-relay map ip 192.168.2.2 102 broadcast

 frame-relay map ip 192.168.2.4 104 broadcast

 no frame-relay inverse-arp

interface Serial0/2

 no ip address

 shutdown

interface Serial0/3

router rip

 version 2

 network 1.0.0.0

 network 192.168.1.0

 network 192.168.2.0

 no auto-summary

r2配置

 ip address 2.2.2.2 255.255.255.0

 ip address 192.168.1.2 255.255.255.0

 ip address 192.168.2.2 255.255.255.0

 frame-relay map ip 192.168.2.1 201 broadcast

 frame-relay map ip 192.168.2.4 204 broadcast

 network 2.0.0.0

r3;

no ip domain lookup

frame-relay switching

!         

 clock rate 64000

 frame-relay lmi-type cisco

 frame-relay intf-type dce

 frame-relay route 102 interface Serial0/2 201

 frame-relay route 104 interface Serial0/3 401

 frame-relay route 201 interface Serial0/1 102

 frame-relay route 204 interface Serial0/3 402

 frame-relay route 401 interface Serial0/1 104

 frame-relay route 402 interface Serial0/2 204

r4:

 ip address 4.4.4.4 255.255.255.0

 ip address 192.168.3.4 255.255.255.0

 ip address 192.168.2.4 255.255.255.0

 frame-relay map ip 192.168.2.1 401 broadcast

 frame-relay map ip 192.168.2.2 402 broadcast

 network 4.0.0.0

 network 192.168.3.0

r5:

 ip address 5.5.5.5 255.255.255.0

 ip address 192.168.3.5 255.255.255.0

router eigrp 1

 network 5.0.0.0

r1的路由表

r1#show 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 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

     1.0.0.0/24 is subnetted, 1 subnets

C       1.1.1.0 is directly connected, Loopback0

     2.0.0.0/24 is subnetted, 1 subnets

R       2.2.2.0 [120/1] via 192.168.2.2, 00:00:10, Serial0/1

                [120/1] via 192.168.1.2, 00:00:10, Serial0/0

     4.0.0.0/24 is subnetted, 1 subnets

R       4.4.4.0 [120/1] via 192.168.2.4, 00:00:18, Serial0/1

     5.0.0.0/24 is subnetted, 1 subnets

R       5.5.5.0 [120/2] via 192.168.2.4, 00:00:03, Serial0/1

C    192.168.1.0/24 is directly connected, Serial0/0

C    192.168.2.0/24 is directly connected, Serial0/1

R    192.168.3.0/24 [120/1] via 192.168.2.4, 00:00:18, Serial0/1

r3的show fr r

r3#show frame-relay r

Input Intf      Input Dlci      Output Intf     Output Dlci     Status

Serial0/1       102             Serial0/2       201             active

Serial0/1       104             Serial0/3       401             active

Serial0/2       201             Serial0/1       102             active

Serial0/2       204             Serial0/3       402             active

Serial0/3       401             Serial0/1       104             active

Serial0/3       402             Serial0/2       204             active

我們用distance修改管理距離，先降低ospf管理距離

例子：router ospf 1

distance 130

network  ip位址   反掩碼    area 0

 O   1.1.1.0 [110/65] via 192.168.1.1, 00:14:53, Serial0/0

4.0.0.0/24 is subnetted, 1 subnets

O       4.4.4.0 [110/65] via 192.168.3.4, 00:00:06, Serial0/0

C       5.5.5.0 is directly connected, Loopback0

O    192.168.2.0/24 [110/128] via 192.168.3.4, 00:00:06, Serial0/0

C    192.168.3.0/24 is directly connected, Serial0/0

本文轉自q狼的誘惑 51CTO部落格，原文連結：http://blog.51cto.com/liangrui/411271，如需轉載請自行聯系原作者