廣域網(wǎng)協(xié)議的封裝

1、廣域網(wǎng)協(xié)議的封裝【實(shí)驗(yàn)名稱】廣域網(wǎng)協(xié)議的封裝【實(shí)驗(yàn)?zāi)康摹空莆諒V域網(wǎng)協(xié)議的封裝類型和封裝方法【背景描述】你是公司的網(wǎng)絡(luò)管理員，兩個分公司之間希望能夠申請一條廣域網(wǎng)專線進(jìn)行 連接。公司現(xiàn)有銳捷路由器兩臺，希望你了解該設(shè)備的廣域網(wǎng)接口所支持的協(xié)議， 以確定選擇哪一種廣域網(wǎng)鏈路?！炯夹g(shù)原理】常見廣域網(wǎng)專線技術(shù)有，DDN專線、PSTN/ISDN 專線、幀中繼專線、X.25 專線等。數(shù)據(jù)鏈路層提供各種專線技術(shù)的協(xié)議，主要有 PPP、HDLC、X.25、 Frame-relay 以及 ATM 等?！緦?shí)現(xiàn)功能】查看路由器廣域網(wǎng)接口支持的數(shù)據(jù)鏈路層協(xié)議，并進(jìn)行正確的封裝。【實(shí)驗(yàn)設(shè)備】R1762路由器（1臺）【實(shí)

2、驗(yàn)拓?fù)洹俊緦?shí)驗(yàn)步驟】 步驟一查看廣域網(wǎng)接口默認(rèn)的封裝類型：Routerl# show in terface serial 1/2serial 1/2 is UP , line protocol is UP/ 查看接口的狀態(tài)，是否為 UPHardware is PQ2 SCC HDLC CONTROLLER serial查看接口 IP 地址的配置MTU 1500 bytes, BW 512 Kbit/ 查看接口的帶寬為 512KEncapsulation protocol is HDLC, loopback not set/ 默認(rèn)的圭寸裝協(xié)議是HDLCKeepalive in terval is

3、 10 sec , setCarrier delay is 2 secRXload is 1 ,Txload is 1Queue ing strategy: WFQ5 minu tes in put rate 17 bits/sec, 0 packets/sec5 minu tes output rate 17 bits/sec, 0 packets/sec511 packets in put, 11242 bytes, 0 no bufferReceived 511 broadcasts, 0 run ts, 0 gia nts0 in put errors, 0 CRC, 0 frame,

4、 0 overr un, 0 abort511 packets output, 11242 bytes, 0 underruns0 output errors, 0 collisi on s, 1 in terface resets1 carrier tran siti onsV35 DTE cable/ 該接口為 DTE 端DCD=up DSR=up DTR=up RTS=up CTS=up步驟二查看廣域網(wǎng)接口支持的封裝類型:RouterA(c on fig)#i nterface serial 1/2RouterA(c on fig-if)#e ncapsulati on ?en caps

5、ulation是圭寸裝數(shù)據(jù)鏈路層協(xié)議的命令frame-relayFrame Relay n etworks/幀中繼協(xié)議hdlcserial HDLC synchronous/高級數(shù)據(jù)鏈路控制協(xié)議lapbLAPB(X.25 Level 2)/X.25的二層協(xié)議pppPoin t-to-Po int protocol/PPP點(diǎn)到點(diǎn)協(xié)議x25X.25/X.25 協(xié)議步驟三更改廣域網(wǎng)接口的封裝類型：PPP封裝/ 進(jìn)行 serial 1/2/將接口協(xié)議封裝為 PPPRouterA(c on fig)#i nterface serial 1/2RouterA(config-if)#encapsulatio

6、n pppRouterA(c on fig-if)#e ndRouterA#show in terface serial 1/2/ 查看接口的圭寸裝協(xié)議serial 1/2 is UP , line protocol is DOWNHardware is PQ2 SCC HDLC CONTROLLER serialMTU 1500 bytes, BW 2000 KbitEn capsulati on protocol is PPP, loopback not setKeepalive in terval is 10 sec , setCarrier delay is 2 secRXload i

7、s 1 ,Txload is 1LCP Reqse nt/PPP 協(xié)議相關(guān)參數(shù)Closed: ipcpQueueing strategy: FIFOOutput queue 0/40, 0 drops;In put queue 0/75, 0 drops5 minu tes in put rate 14 bits/sec, 0 packets/sec5 minu tes output rate 36 bits/sec, 0 packets/sec403 packets in put, 8866 bytes, 0 no bufferReceived 246 broadcasts, 0 run t

8、s, 0 gia nts15 in put errors, 0 CRC, 15 frame, 0 overru n, 0 abort1011 packets output, 29156 bytes, 0 un derru ns0 output errors, 0 collisi ons, 59 in terface resets1 carrier tran siti onsV35 DCE cableDCD=up DSR=up DTR=up RTS=up CTS=upFrame-Relay 圭寸裝RouterA(config)#interface serial 1/2/ 進(jìn)行 serial 1/

9、2RouterA(config-if)#encapsulation frame-relay/ 將接口協(xié)議圭寸裝為幀中繼RouterA(c on fig-if)#e ndRouterA#show in terface serial 1/2/ 查看接口的圭寸裝協(xié)議serial 1/2 is UP , line protocol is UPHardware is PQ2 SCC HDLC CONTROLLER serialMTU 1500 bytes, BW 2000 KbitEncapsulation protocol is FRAME RELAY, loopback not set/ 圭寸裝協(xié)議

10、Keepalive in terval is 10 sec , setCarrier delay is 2 secRXload is 1 ,Txload is 1LMI enq sent 1, LMI status recvd 0, LMI update recvd 0, DTE LMI upLMI enq recvd 0, LMI status sent 0, LMI update sent 0LMI DLCI 0 LMI type is CCITT, frame relay DTE in terface broadcasts 0/幀中繼協(xié)議相關(guān)參數(shù)Queueing strategy: FI

11、FOOutput queue 0/40, 0 drops;In put queue 0/75, 0 drops5 minu tes in put rate 15 bits/sec, 0 packets/sec5 minu tes output rate 36 bits/sec, 0 packets/sec405 packets in put, 8910 bytes, 0 no bufferReceived 246 broadcasts, 0 run ts, 0 gia nts15 in put errors, 0 CRC, 15 frame, 0 overru n, 0 abort1017 p

12、ackets output, 29239 bytes, 0 un derru ns0 output errors, 0 collisi ons, 61 in terface resets1 carrier tran siti onsV35 DCE cableDCD=up DSR=up DTR=up RTS=up CTS=upX.25封裝RouterA(c on fig)#i nterface serial 1/2/ 進(jìn)行 serial 1/2RouterA(c on fig-if)#e ncapsulatio n X25/將接口協(xié)議封裝為X.25RouterA(c on fig-if)#e n

13、dRouterA#show in terface serial 1/2/查看接口的封裝協(xié)議serial 1/2 is UP , line protocol is DOWNHardware is PQ2 SCC HDLC CONTROLLER serialMTU 1500 bytes, BW 2000 Kbit/查看封裝協(xié)議En capsulati on protocol is X.25, loopback not setKeepalive in terval is 0 sec , no setCarrier delay is 2 secRXIoad is 1 ,Txload is 1LAPB

14、DTE, modulo 8, k 7, N1 12056, N2 20T1 3000, interface outage (partial T3) 0, T4 0State SABMSENT, VS 0, VR 0, Remote VR 0, Retra nsmissio ns 2Queues: U/S frames 0, I frames 0, un ack. 0, reTx 0IFRAMEs 0/0 RNRs 0/0 REJs 0/0 SABM/Es 2/0 FRMRs 0/0 DISCs 0/0X25 DTE, address , state R1, modulo 8Defaults:

15、DEF en capsulati on, idle 0, nvc 3in put/output window sizes 2/2, packet sizes 128/128Timers: T20 180, T21 200, T22 180, T23 180, TH 0Chann els: Incoming-only none, Two-way 1-1024,Outgo ing-onlynoneRESTARTs 0/0 CALLs 0+0/0+0/0+0 DIAGs 0/0/X.25 協(xié)議相關(guān)參數(shù)Queueing strategy: FIFOOutput queue 0/40, 0 drops;In put queue 0/75, 0 drops5 minu tes in put rate 16 bits/sec, 0 packets/sec5 minu tes output rate 32 bits/sec, 0 packets/sec407 packets in put, 8954 bytes, 0 no bufferReceived 246 broadcasts, 0 run ts, 0 gia nts15 in put errors, 0