實(shí)驗(yàn)4-3：配置多區(qū)域OSPF和P2MP、P2P幀中繼

實(shí)驗(yàn)室4-3:多區(qū)域OSPF和P2MP，P2P幀中繼配置實(shí)驗(yàn)?zāi)康?本實(shí)驗(yàn)將在復(fù)雜的幀中繼網(wǎng)絡(luò)中配置OSPF。完成這個(gè)實(shí)驗(yàn)后，必須完成以下任務(wù)：使用點(diǎn)到多點(diǎn)網(wǎng)絡(luò)類(lèi)型配置OSPF使用點(diǎn)對(duì)點(diǎn)網(wǎng)絡(luò)類(lèi)型配置OSPF連接核心中的其他裝置實(shí)驗(yàn)拓?fù)?注：在圖中，x是所在機(jī)架的編號(hào)，y是路由器的編號(hào)。實(shí)驗(yàn)幫助:如果出現(xiàn)任何問(wèn)題，可以提交給退伍教師并請(qǐng)求幫助。命令列表:命令說(shuō)明(config)#default interface s0將S0界面還原為默認(rèn)配置(配置-subif)# frame-relay interface-DLCI 122為點(diǎn)對(duì)點(diǎn)連接指定DLCI(config)# intern faces 0/0.1 multipoint | point-to-point創(chuàng)建點(diǎn)到點(diǎn)(點(diǎn)到多點(diǎn))子界面(config-subif)# IP OSPF network point-to-multipoint指定OSPF介面類(lèi)型為點(diǎn)到多點(diǎn)。默認(rèn)值為NBMA。(config-router)# network 172 . 31 . 0 . 0 . 0 . 255 . 255 area 0指定與此網(wǎng)絡(luò)范圍匹配的接口在此指定的OSPF區(qū)域運(yùn)行(config-if)# no frame-relay inverse-ARP關(guān)閉此接口的幀中繼站ARP解析任務(wù)1: OSPF多區(qū)域和幀中繼網(wǎng)絡(luò)點(diǎn)到多點(diǎn)、點(diǎn)對(duì)點(diǎn)配置實(shí)驗(yàn)過(guò)程：第一步：在邊界路由器上創(chuàng)建多點(diǎn)子接口s0.1。用于以O(shè)SPF點(diǎn)到多點(diǎn)網(wǎng)絡(luò)類(lèi)型連接幀中繼網(wǎng)絡(luò)。步驟2:更改子接口s0.1的OSPF網(wǎng)絡(luò)類(lèi)型為點(diǎn)到點(diǎn)(默認(rèn)幀中繼多點(diǎn)接口網(wǎng)絡(luò)類(lèi)型為非廣播(NBMA)步驟3:在IP地址172.31.xx.y/24中分配s0.1接口，x是機(jī)架號(hào)，y是路由器號(hào)。例如：P3R2，此IP地址為172.31.33.2/24。步驟4:幀中繼不使用幀中繼站arp，因此必須將此遠(yuǎn)程地址手動(dòng)映射到本地DLCI編號(hào)。在邊界路由器上為路由器BBR2創(chuàng)建新的幀中繼映射語(yǔ)句。IP地址172.31.xx.4使用DLCI編號(hào)2xy。其中x是幀編號(hào)，y是路由器編號(hào)。不要忘記添加Broadcast參數(shù)。例如：P3R2，此幀中繼映射語(yǔ)句應(yīng)如下所示：frame-relay rap IP 172 . 31 . 33 . 4 232 broadcastP3R1，此幀中繼映射語(yǔ)句應(yīng)如下所示：frame-relay rap IP 172 . 31 . 33 . 4 231 broadcast步驟5:連接邊界路由器上的S0接口。步驟6:在邊界路由器上的OSPF進(jìn)程下添加新network語(yǔ)句聲明172.31.xx.0此網(wǎng)段在Area 0上運(yùn)行，使用IP OSPF網(wǎng)絡(luò)點(diǎn)至多點(diǎn)命令修改S0.1接口的網(wǎng)絡(luò)類(lèi)型。步驟7:在邊界路由器上使用相應(yīng)的show命令檢查OSPF鄰居狀態(tài)。點(diǎn)對(duì)點(diǎn)網(wǎng)絡(luò)類(lèi)型下是否有DR/BDR？路由器輸出應(yīng)類(lèi)似于以下內(nèi)容：P1R1#sh IP OS neineighbor id pri state dead time address interface172.31.11.4 1完整/BDR 10033003:5172 . 31 . 11 . 4串行0.1172.31.1.3 100完整/dr003300:5172.31.1.3串行010 . 1 . 0 . 2 0 full/-00336900:35 10 . 1 . 0 . 2串行110.200.200.13 1完整/dr 00336600:337 10 . 1 . 1 . 3以太網(wǎng)0P1R1#步驟8:顯示邊界路由器PxR1和PxR2的路由表，以確保它是正確學(xué)習(xí)核心的OSPF路由。在邊界路由器上ping BBR 2路由器的以太網(wǎng)接口10.254.0.2，以驗(yàn)證核心是否建立了正確的連接。您的輸出應(yīng)類(lèi)似于以下內(nèi)容：Router#ping 10.254.0.2Type Escape sequence to abort。Sending 5，100-byte icmp echos to 10.254.0.2，timeout is 2 seconds :！Success rate is 80percent (4/5)，round-trip min/avg/max=1/1/4毫秒步驟9:創(chuàng)建連接兩個(gè)邊界路由器的新點(diǎn)對(duì)點(diǎn)子接口s0.2。在此子接口上配置IP地址10.xx.0.y/24。x是機(jī)架號(hào)，y是路由器號(hào)。路由器PxR1到PxR2的此DLCI為122，路由器PxR2到PxR1的DLCI為221。例如，與P3R1和P3R2路由器的連接配置如下：p3r 1(config)# interface serial 0.2 point-to-pointp3r 1(config-subif)# IP address 10 . 33 . 0 . 1 255 . 255 . 255 . 0配置子接口(p3r 1)#幀中繼接口-DLCI 122p3r 2(config)# interface serial 0.2 point-to-pointp3r 2(config-subif)# IP address 10 . 33 . 0 . 2 255 . 255 . 255 . 0P3r2(配置子)#幀中繼接口-DLCI 221步驟10:PING每個(gè)邊界路由器上的相對(duì)邊界路由器的S0.2子接口以驗(yàn)證連接是否正確。您的輸出應(yīng)類(lèi)似于以下內(nèi)容：Router#ping 10.55.0.2Type Escape sequence to abort。Sending 5，100-byte icmp echos to 10.55.0.2，timeout is 2 seconds :！Success rate is 80percent (4/5)，round-trip min/avg/max=1/1/4毫秒步驟11:將10.xx.0.0網(wǎng)絡(luò)添加到邊界路由器上的OSPF區(qū)域x。步驟12:確定邊界路由器上具有兩個(gè)子接口的網(wǎng)絡(luò)類(lèi)型。哪個(gè)OSPF的網(wǎng)絡(luò)類(lèi)型是點(diǎn)對(duì)點(diǎn)子接口的默認(rèn)網(wǎng)絡(luò)類(lèi)型？您的顯示應(yīng)該類(lèi)似于以下內(nèi)容：P1R1#sh IP OS intSerial0.1 is up，line protocol is upInternet address 172.31.11.1/24，area 0Process id 1，路由器id 10.1.0.1，network type point _ to _ multipoint，cost : 64Transmit delay is 1 sec，state point _ to _ multipoint，Timer intervals configured，hello 30，dead 120，wait 120，retransmit 5Oob-resync timeout 120Hello due in 00:00:11Index 2/4，flood queue length 0Next0x0(0)/0x0(0)Last flood scan length is 1，maximum is 3Last flood scan time is 4 msec，maximum is 4 msecNeighbor count is 1，adjacent neighbor count is 1neighbor 172.31.11.4與Adjacent with neighborSuppress hello for 0 neighbor(s)(Output Omitted)Serial0.2 is up，line protocol is upInternet address 10.11.0.1/24，area 1Process id 1，路由器id 10.1.0.1，network type point _ to _ point，cost : 64Transmit delay is 1 sec，state point _ to _ point，Timer intervals configured、hello 10、dead 40、wait 40、retransmit 5Oob-resync timeout 40Hello due in 00:00:06Index 3/5，flood queue length 0Next0x0(0)/0x0(0)Last flood scan length is 2，maximum is 3Last flood scan time is 4 msec，maximum is 4 msecNeighbor count is 1，adjacent neighbor count is 1neighbor 10.1.0.2與Adjacent with neighborSuppress hello for 0 neighbor(s)(Output Omitted)步驟13:在邊界路由器上使用相應(yīng)的show命令檢查OSPF鄰居狀態(tài)。點(diǎn)對(duì)點(diǎn)網(wǎng)絡(luò)是否有DR/BDR？您的輸出應(yīng)類(lèi)似于以下內(nèi)容：P1R1#sh IP OS neineighbor id pri state dead time address interface172 . 31 . 11 . 4 0 full/-00336600:1172 . 31 . 11 . 4串行0.110 . 1 . 0 . 2 0 full/-00336900:333 10 . 11 . 0 . 2串行0.210 . 1 . 0 . 2 0 full/-00336900:333 10 . 1 . 0 . 2串行110.200.200.13 1完整/dr 00336600:334 10 . 1 . 1 . 3以太網(wǎng)0P1R1#步驟14:邊界路由器在IP路由表中進(jìn)行OSPF路由，并且依賴(lài)于使用的機(jī)架，可能顯示其他機(jī)架的路徑。您的輸出類(lèi)似于：P1R1#sh IP routecodes 3360 c-connected、s-static、r-rip、m-mobile、b-BGPD-EIGRP、ex-EIGRP external、o-OSPF、ia-OSPF interareaN1-OSPF nssa external type 1，n2-OSPF nssa external type 2E1-OSPF external type 1，E2-OSPF external type 2I-is-is、su-is-is摘要、L1-is-is level-1、L2-is-is level-2Ia-is-is interarea、*-candidate default、u-per-user static routeO-ODR，p-periodic downloaded static routeGateway of last resort is not set172 . 31 . 0 . 0/16 is variably subnetted，4 subnets，2 masksc 172 . 31 . 1 . 0/24 is directly connected，串行0c 172 . 31 . 11 . 0/24 is directly connected，串行0.1o 172 . 31 . 11 . 2/32110/128via 172 . 31 . 11 . 4，0033300333647，串行0.1o 172 . 31 . 11 . 4/32110/64via 172 . 31 . 11 . 4，0033300333647，串行0.110.0.0.0/24 is subnetted，6 subnetsC 10.11.0.0 is directly connected，串行0.2O 10.1.3.0 110/74 via 10.1.1.3，00330073:54，乙太網(wǎng)路0O 10.1.2.0 110/74 via 10.1.0.2，00337600:55，串行1110/74 via 10.11.0.2，00336600:55，串行0.2C 10.1.1.0 is directly connected，以太網(wǎng)0C 10.1.0.0 is directly connected，串行1o e 210 . 254 . 0 . 0110/20via 172 . 31 . 11 . 4，00333:338，串行0.1P1R1#步驟15:驗(yàn)證內(nèi)部路由器上IP路由表中的OSPF路徑。P1R3#sh IP routecodes 3360 c-connected、