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      學(xué)習(xí)啦 > 學(xué)習(xí)電腦 > 網(wǎng)絡(luò)知識(shí) > 路由器 > 路由器設(shè)置 > cisco思科 > cisco怎么配置OSPF虛鏈路

      cisco怎么配置OSPF虛鏈路

      時(shí)間: 權(quán)威724 分享

      cisco怎么配置OSPF虛鏈路

        cisco公司已成為公認(rèn)的全球網(wǎng)絡(luò)互聯(lián)解決方案的領(lǐng)先廠商,該公司出產(chǎn)的一系列路由器更是引領(lǐng)全球,那么你知道cisco怎么配置OSPF虛鏈路嗎?下面是學(xué)習(xí)啦小編整理的一些關(guān)于cisco怎么配置OSPF虛鏈路的相關(guān)資料,供你參考。

        cisco配置OSPF虛鏈路的方法

        這個(gè)配置將驗(yàn)證一個(gè)OSPF虛電路(Virtual-Link)的過程,重點(diǎn)在觀察虛鏈路連接的臨時(shí)網(wǎng)絡(luò)與正常區(qū)域間路由有何區(qū)別。上圖中區(qū)域4(area 4)沒有和area 0直接相連。在R2與R3之間配置了一條虛鏈路。

        // R1 //

        int lo0

        ip ad 1.1.1.1 255.255.255.0

        int e0

        ip ad 192.1.1.1 255.255.255.0

        router os 1

        network 192.1.1.0 0.0.0.255 area 0

        // R2 //

        int lo0

        ip ad 2.2.2.2 255.255.255.0

        int e0

        ip ad 192.1.1.2 255.255.255.0

        int e1

        ip ad 193.1.1.2 255.255.255.0

        router os 1

        network 192.1.1.0 0.0.0.255 area 0

        network 193.1.1.0 0.0.0.255 area 1

        // R3 //

        int lo0

        ip ad 3.3.3.3 255.255.255.0

        int e1

        ip ad 193.1.1.3 255.255.255.0

        int e0

        ip ad 194.1.1.3 255.255.255.0

        router os 1

        network 193.1.1.0 0.0.0.255 area 1

        network 194.1.1.0 0.0.0.255 area 4

        // R4 //

        int lo0

        ip ad 4.4.4.4 255.255.255.0

        int e0

        ip ad 194.1.1.4 255.255.255.0

        router os 1

        network 194.1.1.0 0.0.0.255 area 4

        基本配置完成后,我們?cè)诿颗_(tái)路由器上分別來驗(yàn)證一下:

        r1#sh ip os nei

        Neighbor ID Pri State Dead Time Address Interface

        2.2.2.2 1 FULL/BDR 00:00:33 192.1.1.2 Ethernet0/0

        r1#

        r1#sh ip ro

        1.0.0.0/24 is subnetted, 1 subnets

        C 1.1.1.0 is directly connected, Loopback0

        O IA 193.1.1.0/24 [110/20] via 192.1.1.2, 00:00:19, Ethernet0/0

        C 192.1.1.0/24 is directly connected, Ethernet0/0

        //注意R1上有關(guān)于193.1.1.0的路由條目,是屬于IA類型(域間路由)

        r2#sh ip os nei

        Neighbor ID Pri State Dead Time Address Interface

        1.1.1.1 1 FULL/DR 00:00:35 192.1.1.1 Ethernet0/0

        3.3.3.3 1 FULL/BDR 00:00:35 193.1.1.3 Ethernet1/0

        r2#

        r2#

        r2#sh ip ro

        2.0.0.0/24 is subnetted, 1 subnets

        C 2.2.2.0 is directly connected, Loopback0

        C 193.1.1.0/24 is directly connected, Ethernet1/0

        C 192.1.1.0/24 is directly connected, Ethernet0/0

        r3#sh ip os nei

        Neighbor ID Pri State Dead Time Address Interface

        2.2.2.2 1 FULL/DR 00:00:32 193.1.1.2 Ethernet1/0

        4.4.4.4 1 FULL/DR 00:00:34 194.1.1.4 Ethernet0/0

        r3#sh ip ro

        3.0.0.0/24 is subnetted, 1 subnets

        C 3.3.3.0 is directly connected, Loopback0

        C 193.1.1.0/24 is directly connected, Ethernet1/0

        O IA 192.1.1.0/24 [110/20] via 193.1.1.2, 00:02:49, Ethernet1/0

        C 194.1.1.0/24 is directly connected, Ethernet0/0

        //注意R3中有關(guān)于192.1.1.0的路由是屬于IA類型(域間路由)

        r4#sh ip os nei

        Neighbor ID Pri State Dead Time Address Interface

        3.3.3.3 1 FULL/BDR 00:00:33 194.1.1.3 Ethernet0/0

        r4#sh ip ro

        4.0.0.0/24 is subnetted, 1 subnets

        C 4.4.4.0 is directly connected, Loopback0

        C 194.1.1.0/24 is directly connected, Ethernet0/0

        //R4上沒有關(guān)于AREA 0內(nèi)的任何路由信息

        我們下面在R2、R3上添加Virtual-link的配置:

        R2:

        router os 1

        area 1 virtual-link 3.3.3.3

        R3:

        router os 1

        area 1 virtual-link 2.2.2.2

        對(duì)比之前的路由信息,看有何區(qū)別:

        r1#sh ip ro

        1.0.0.0/24 is subnetted, 1 subnets

        C 1.1.1.0 is directly connected, Loopback0

        O IA 193.1.1.0/24 [110/20] via 192.1.1.2, 00:00:01, Ethernet0/0

        C 192.1.1.0/24 is directly connected, Ethernet0/0

        O IA 194.1.1.0/24 [110/30] via 192.1.1.2, 00:00:01, Ethernet0/0

        //多了一條194網(wǎng)段的路由,類型IA(區(qū)域間)

        r2#sh ip ro

        2.0.0.0/24 is subnetted, 1 subnets

        C 2.2.2.0 is directly connected, Loopback0

        C 193.1.1.0/24 is directly connected, Ethernet1/0

        C 192.1.1.0/24 is directly connected, Ethernet0/0

        O IA 194.1.1.0/24 [110/20] via 193.1.1.3, 00:00:06, Ethernet1/0

        //多了一條194網(wǎng)段路由,類型為IA(區(qū)域間)

        r3#sh ip ro

        3.0.0.0/24 is subnetted, 1 subnets

        C 3.3.3.0 is directly connected, Loopback0

        C 193.1.1.0/24 is directly connected, Ethernet1/0

        O 192.1.1.0/24 [110/20] via 193.1.1.2, 00:02:56, Ethernet1/0

        C 194.1.1.0/24 is directly connected, Ethernet0/0

        //R3的192路由原本為IA類型(區(qū)域間),現(xiàn)在轉(zhuǎn)為O類型(區(qū)域內(nèi)),說明R3認(rèn)為自已與192網(wǎng)段是直連的。虛鏈路相當(dāng)于將R3直接連接了AREA 0 與 AREA 4區(qū)域

        r4#sh ip ro

        4.0.0.0/24 is subnetted, 1 subnets

        C 4.4.4.0 is directly connected, Loopback0

        O IA 193.1.1.0/24 [110/20] via 194.1.1.3, 00:03:40, Ethernet0/0

        O IA 192.1.1.0/24 [110/30] via 194.1.1.3, 00:03:25, Ethernet0/0

        C 194.1.1.0/24 is directly connected, Ethernet0/0

        //R4上192路由類型IA(區(qū)域間)

        最后我們將虛鏈路效果再與正常連接方式進(jìn)行一下比對(duì),如下圖:

        驗(yàn)證如下:

        r1#sh ip ro

        1.0.0.0/24 is subnetted, 1 subnets

        C 1.1.1.0 is directly connected, Loopback0

        O IA 193.1.1.0/24 [110/20] via 192.1.1.2, 00:00:41, Ethernet0/0

        C 192.1.1.0/24 is directly connected, Ethernet0/0

        C 192.2.2.0/24 is directly connected, Ethernet1/0

        O IA 194.1.1.0/24 [110/20] via 192.2.2.4, 00:00:39, Ethernet1/0

        r2#sh ip ro

        2.0.0.0/24 is subnetted, 1 subnets

        C 2.2.2.0 is directly connected, Loopback0

        C 193.1.1.0/24 is directly connected, Ethernet1/0

        C 192.1.1.0/24 is directly connected, Ethernet0/0

        O 192.2.2.0/24 [110/20] via 192.1.1.1, 00:01:04, Ethernet0/0

        O IA 194.1.1.0/24 [110/30] via 192.1.1.1, 00:00:03, Ethernet0/0

        r2#

        r3#sh ip ro

        3.0.0.0/24 is subnetted, 1 subnets

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