CCNA培訓 12第十一章應用幀中繼實現(xiàn)廣域網(wǎng)連接(共33張)

1、 1999, Cisco Systems, Inc. 14-1第十一章第十一章應用幀中繼實現(xiàn)應用幀中繼實現(xiàn)廣域網(wǎng)連接廣域網(wǎng)連接 1999, Cisco Systems, Inc. ICND14-2通過本章的學習，您應該掌握以下內容通過本章的學習，您應該掌握以下內容： 了解了解 Frame Relay 工作過程工作過程 配置配置 Frame Relay 配置配置 Frame Relay 的子端口的子端口 查看查看 Frame Relay 信息信息本章目標本章目標 1999, Cisco Systems, Inc. ICND14-3Frame Relay 概述概述 使用虛電路進行連接使用虛電路進行

2、連接 提供面向對象的服務提供面向對象的服務Frame Relay works here.DCE or FrameRelay SwitchCSU/DSU 1999, Cisco Systems, Inc. ICND14-4Frame Relay 棧棧OSI 參考模型參考模型Frame RelayPhysicalPresentationSessionTransportNetworkData LinkApplicationEIA/TIA-232, EIA/TIA-449, V.35, X.21, EIA/TIA-530Frame RelayIP/IPX/AppleTalk, etc. 1999, C

3、isco Systems, Inc. ICND14-5Frame Relay 術語術語LocalAccessLoop=T1Local AccessLoop=64 kbpsLocal AccessLoop=64 kbpsDLCI: 400PVCDLCI: 500LMI100=Active400=ActiveDLCI: 200DLCI: 100PVC 1999, Cisco Systems, Inc. ICND14-6CSU/DSUFrame Relay 地址映射地址映射 從提供商那里得到本地的從提供商那里得到本地的DLCI號號 建立目的地址和本地建立目的地址和本地DLCI之間的映射關系之間的映射

4、關系DLCI: 500PVC10.1.1.1Inverse ARP orFrame Relay mapIP(10.1.1.1)FrameRelayDLCI (500) 1999, Cisco Systems, Inc. ICND14-7Frame Relay 信號信號Cisco 路由器支持三種路由器支持三種 LMI 標準標準: Cisco ANSI T1.617 Annex D ITU-T Q.933 Annex ADLCI: 400PVCKeepaliveCSU/DSUDLCI: 500PVC10.1.1.1xLMI500=Active400=Inactive 1999, Cisco Sys

5、tems, Inc. ICND14-8Frame Relay 的反轉的反轉 ARP 協(xié)議協(xié)議和和 LMI 工作工作Frame RelayCloud1DLCI=100DLCI=400172.168.5.5172.168.5.7 1999, Cisco Systems, Inc. ICND14-9Frame Relay 的反轉的反轉 ARP 協(xié)議協(xié)議和和 LMI 工作工作2Status Inquiry2Status InquiryFrame RelayCloud1DLCI=100DLCI=400172.168.5.5172.168.5.7 1999, Cisco Systems, Inc. ICN

6、D14-10Frame Relay 的反轉的反轉 ARP 協(xié)議協(xié)議和和 LMI 工作工作3Local DLCI 100=Active4Local DLCI 400=Active2Status Inquiry2Status InquiryFrame RelayCloud1DLCI=100DLCI=4003172.168.5.5172.168.5.7 1999, Cisco Systems, Inc. ICND14-11Frame Relay 的反轉的反轉 ARP 協(xié)議協(xié)議和和 LMI 工作工作4Hello, I am 172.168.5.5.3Local DLCI 100=Active4Loca

7、l DLCI 400=Active2Status Inquiry2Status InquiryFrame RelayCloud1DLCI=100DLCI=4003172.168.5.5172.168.5.7 1999, Cisco Systems, Inc. ICND14-12Frame Relay 的反轉的反轉 ARP 協(xié)議協(xié)議和和 LMI 工作工作Hello, I am 172.168.5.7.45Frame Relay Map172.168.5.5 DLCI 400 ActiveFrame RelayCloudDLCI=100DLCI=400Frame Relay Map172.168.

8、5.7 DLCI 100 Active5172.168.5.5172.168.5.7 1999, Cisco Systems, Inc. ICND14-13Frame Relay 的反轉的反轉 ARP 協(xié)議協(xié)議和和 LMI 工作工作Hello, I am 172.168.5.7.45Frame Relay Map172.168.5.5 DLCI 400 ActiveFrame RelayCloudDLCI=100DLCI=400Frame Relay Map172.168.5.7 DLCI 100 Active5Hello, I am 172.168.5.5.6172.168.5.5172.1

9、68.5.7 1999, Cisco Systems, Inc. ICND14-14Frame Relay 的反轉的反轉 ARP 協(xié)議協(xié)議和和 LMI 工作工作KeepalivesKeepalivesHello, I am 172.168.5.7.45Frame Relay Map172.168.5.5 DLCI 400 ActiveFrame RelayCloudDLCI=100DLCI=400Frame Relay Map172.168.5.7 DLCI 100 Active5Hello, I am 172.168.5.5.677172.168.5.5172.168.5.7 1999, C

10、isco Systems, Inc. ICND14-15 Rel. 11.2 RouterRel. 10.3 Routerinterface Serial1 ip address 10.16.0.1 255.255.255.0 encapsulation frame-relay bandwidth 64interface Serial1 ip address 10.16.0.2 255.255.255.0 encapsulation frame-relay bandwidth 64 frame-relay lmi-type ansiHQBranch配置配置 Frame Relay 1999,

11、Cisco Systems, Inc. ICND14-16反轉反轉 ARP 缺省情況下是激活的缺省情況下是激活的 在配置輸出信息中看不出來在配置輸出信息中看不出來Rel. 11.2 RouterRel. 10.3 RouterHQ interface Serial1 ip address 10.16.0.1 255.255.255.0 encapsulation frame-relay bandwidth 64interface Serial1 ip address 10.16.0.2 255.255.255.0 encapsulation frame-relay bandwidth 64 f

12、rame-relay lmi-type ansiBranch配置配置 Frame Relay 1999, Cisco Systems, Inc. ICND14-17DLCI=110IP address=10.16.0.1/24 p1r1DLCI=100IP address=10.16.0.2/24 interface Serial1ip address 10.16.0.1 255.255.255.0encapsulation frame-relaybandwidth 64frame-relay map ip 10.16.0.2 110 broadcastHQBranch配置靜態(tài)的配置靜態(tài)的 F

13、rame Relay 映射映射 1999, Cisco Systems, Inc. ICND14-18查看查看 Frame Relay 信息信息顯示協(xié)議、顯示協(xié)議、DLCI、和和 LMI 的相關信息的相關信息Router#show interface s0Serial0 is up, line protocol is up Hardware is HD64570 Internet address is 10.140.1.2/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulatio

14、n FRAME-RELAY, loopback not set, keepalive set (10 sec) LMI enq sent 19, LMI stat recvd 20, LMI upd recvd 0, DTE LMI up LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0 LMI DLCI 1023 LMI type is CISCO frame relay DTE FR SVC disabled, LAPF state down Broadcast queue 0/64, broadcasts sent/dropped 8/0,

15、 interface broadcasts 5 Last input 00:00:02, output 00:00:02, output hang never Last clearing of show interface counters never Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops 1999, Cisco Systems, Inc. ICND14-19顯示顯示 LMI 信息信息Router#show frame-relay lmi LMI Statistics for

16、interface Serial0 (Frame Relay DTE) LMI TYPE = CISCO Invalid Unnumbered info 0 Invalid Prot Disc 0 Invalid dummy Call Ref 0 Invalid Msg Type 0 Invalid Status Message 0 Invalid Lock Shift 0 Invalid Information ID 0 Invalid Report IE Len 0 Invalid Report Request 0 Invalid Keep IE Len 0 Num Status Enq.

17、 Sent 113100 Num Status msgs Rcvd 113100 Num Update Status Rcvd 0 Num Status Timeouts 0查看查看 Frame Relay 信息信息 1999, Cisco Systems, Inc. ICND14-20顯示顯示 PVC 數(shù)據(jù)通訊信息數(shù)據(jù)通訊信息查看查看 Frame Relay 信息信息Router#show frame-relay pvc 100PVC Statistics for interface Serial0 (Frame Relay DTE)DLCI = 100, DLCI USAGE = LOCA

18、L, PVC STATUS = ACTIVE, INTERFACE = Serial0 input pkts 28 output pkts 10 in bytes 8398 out bytes 1198 dropped pkts 0 in FECN pkts 0 in BECN pkts 0 out FECN pkts 0 out BECN pkts 0 in DE pkts 0 out DE pkts 0 out bcast pkts 10 out bcast bytes 1198 pvc create time 00:03:46, last time pvc status changed

19、00:03:47 1999, Cisco Systems, Inc. ICND14-21顯示路由信息顯示路由信息Router#show frame-relay mapSerial0 (up): ip 10.140.1.1 dlci 100(0 x64,0 x1840), dynamic, broadcast, status defined, active查看查看 Frame Relay 信息信息 1999, Cisco Systems, Inc. ICND14-22清除動態(tài)的清除動態(tài)的Frame Relay 映射關系映射關系查看查看 Frame Relay 信息信息Router#show fr

20、ame-relay mapSerial0 (up): ip 10.140.1.1 dlci 100(0 x64,0 x1840), dynamic, broadcast, status defined, activeRouter#clear frame-relay-inarpRouter#sh frame mapRouter# 1999, Cisco Systems, Inc. ICND14-23顯示顯示 LMI 的調試信息的調試信息查看查看 Frame Relay 信息信息Router#debug Frame lmiFrame Relay LMI debugging is onDisplay

21、ing all Frame Relay LMI dataRouter#1w2d: Serial0(out): StEnq, myseq 140, yourseen 139, DTE up1w2d: datagramstart = 0 xE008EC, datagramsize = 131w2d: FR encap = 0 xFCF103091w2d: 00 75 01 01 01 03 02 8C 8B1w2d:1w2d: Serial0(in): Status, myseq 1401w2d: RT IE 1, length 1, type 11w2d: KA IE 3, length 2,

22、yourseq 140, myseq 1401w2d: Serial0(out): StEnq, myseq 141, yourseen 140, DTE up1w2d: datagramstart = 0 xE008EC, datagramsize = 131w2d: FR encap = 0 xFCF103091w2d: 00 75 01 01 01 03 02 8D 8C1w2d:1w2d: Serial0(in): Status, myseq 1421w2d: RT IE 1, length 1, type 01w2d: KA IE 3, length 2, yourseq 142,

23、myseq 1421w2d: PVC IE 0 x7 , length 0 x6 , dlci 100, status 0 x2 , bw 0 1999, Cisco Systems, Inc. ICND14-24Star (Hub and Spoke)Full MeshPartial MeshFrame Relay default: nonbroadcast, multiaccess (NBMA)選擇選擇 Frame Relay 拓撲結構拓撲結構 1999, Cisco Systems, Inc. ICND14-25問題問題:廣播幀必須復制給其它已經(jīng)建立的連接廣播幀必須復制給其它已經(jīng)建立的連

24、接RoutingUpdateACB231路由信息的可達性路由信息的可達性BCDA 1999, Cisco Systems, Inc. ICND14-26實現(xiàn)路由信息的可達性實現(xiàn)路由信息的可達性解決方法解決方法: 在在NBMA環(huán)境的網(wǎng)絡中使用水平分割可能造成一些問題環(huán)境的網(wǎng)絡中使用水平分割可能造成一些問題 劃分子端口可以解決水平分割造成的問題劃分子端口可以解決水平分割造成的問題 一個物理端口可以被劃分成多個邏輯意義上的子端口一個物理端口可以被劃分成多個邏輯意義上的子端口Subnet ASubnet BSubnet CS0PhysicalInterfaceS0.1S0.2S0.3Logical I

25、nterface 1999, Cisco Systems, Inc. ICND14-27子端口的配置子端口的配置 點到點點到點子端口看作是專線子端口看作是專線 沒一個點到點連接的子端口要求由自己的子網(wǎng)沒一個點到點連接的子端口要求由自己的子網(wǎng) 適用于星型拓撲結構適用于星型拓撲結構 多點多點子端口應用在子端口應用在 NBMA 網(wǎng)絡，因此它們無法解決水網(wǎng)絡，因此它們無法解決水平分割所帶來的問題平分割所帶來的問題由于使用的是單獨的子網(wǎng)可以保存地址空間由于使用的是單獨的子網(wǎng)可以保存地址空間適用于適用于 partial-mesh 和和 full-mesh 拓撲結構中拓撲結構中 1999, Cisco Sy

26、stems, Inc. ICND14-28A10.17.0.1s0.2B配置點到點的子端口配置點到點的子端口interface Serial0 no ip address encapsulation frame-relay!interface Serial0.2 point-to-point ip address 10.17.0.1 255.255.255.0 bandwidth 64 frame-relay interface-dlci 110!interface Serial0.3 point-to-point ip address 10.18.0.1 255.255.255.0 band

27、width 64 frame-relay interface-dlci 120!s0.310.18.0.1C10.17.0.210.18.0.2DLCI=110DLCI=120 1999, Cisco Systems, Inc. ICND14-29 interface Serial2 no ip address encapsulation frame-relay!interface Serial2.2 multipoint ip address 10.17.0.1 255.255.255.0 bandwidth 64 frame-relay map ip 10.17.0.2 120 broadcast frame-relay map ip 10.17.0.3 130 broadcast frame-relay map ip 10.17.0.4 140 broadcasts2.1=10.17.0.2/24s2.2=10.17.0.1/24s2.1=10.17.0.4/24s2.1=10.17.0.3