CCIE实验笔记之第3章 WAN协议（帧中继）之七
[size=2][color=#000000][font=Arial][size=10.5pt]3.8[/size][/font][font=黑体][size=10.5pt]实验[/size][/font][/color][/size][size=2][size=10.5pt]6[/size][font=黑体][size=10.5pt]：[/size][/font][size=10.5pt]PPP over frame-relay[/size][font=黑体][size=10.5pt]的配置[/size][/font]
[size=10.5pt][/size][/size][size=2][size=10.5pt][font=Times New Roman][color=#000000]3.8.1
[/color][/font][/size][font=宋体][size=10.5pt][color=#000000]实验内容[/color][/size][/font][/size]
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[/size][/font][font=宋体]在[/font][font=Times New Roman]Frame Relay[/font][font=宋体]的[/font][font=Times New Roman]PVC[/font][font=宋体]上建立端到端的[/font][font=Times New Roman]PPP[/font][font=宋体]会话，注意：只能在[/font][font=Times New Roman]PVC[/font][font=宋体]处于[/font][font=Times New Roman]active[/font][font=宋体]状态时才能建立。能够在一条[/font][font=Times New Roman]Frame-relay[/font][font=宋体]链路上的多个虚链路上存在多个[/font][font=Times New Roman]PPP[/font][font=宋体]会话。[/font][font=Times New Roman]([/font][font=宋体]也就是说要[/font][font=Times New Roman]PVC[/font][font=宋体]仅允许一个[/font][font=Times New Roman]PPP[/font][font=宋体]会话[/font][font=Times New Roman])[/font][font=宋体]。[/font][/size]
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[/size][/font][font=宋体]一个[/font][font=Times New Roman]PPP[/font][font=宋体]连接建立在一个虚拟访问接口上。[/font][/size]
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[/size][/font][font=Times New Roman]PPP over Frame Relay[/font][font=宋体]仅在[/font][font=Times New Roman]IP[/font][font=宋体]上支持。[/font][/size]
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[/size][/font][font=宋体]硬件压缩和一些队列不能应用于虚拟接口之上像[/font][font=Times New Roman]weighted fair queueing, custom queueing, and priority queueing[/font][font=宋体]。[/font][/size]
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[/size][/font][font=宋体]默认，一个[/font][font=Times New Roman]virtual template interface[/font][font=宋体]的封装类型是[/font][font=Times New Roman]PPP[/font][font=宋体]，所以[/font][font=Times New Roman]encapsulation PPP[/font][font=宋体]不会显示在你的配置中。[/font][/size]
[size=2][size=10.5pt][font=Times New Roman][color=#000000]3.8.2
[/color][/font][/size][font=宋体][size=10.5pt][color=#000000]实验拓扑[/color][/size][/font][/size]
[size=10.5pt][/size][size=2][font=宋体]在图[/font][font=Times New Roman]3-9 PPP over frame-relay[/font][font=宋体]的拓扑示意图中，[/font][font=Times New Roman]R5[/font][font=宋体]和[/font][font=Times New Roman]R6[/font][font=宋体]在[/font][font=Times New Roman]frame-relay[/font][font=宋体]上封装[/font][font=Times New Roman]PPP[/font][font=宋体]协议。[/font][/size]
[size=2][font=宋体]图[/font][font=Times New Roman]3-9 PPP over frame-relay[/font][/size]
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[/size]
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[img=413,104]http://www.cnfan.net/cisco/uploadfile/200707/20070703105700859.JPG[/img][size=2][size=10.5pt][font=Times New Roman][color=#000000]3.8.3
[/color][/font][/size][font=宋体][size=10.5pt][color=#000000]所需设备[/color][/size][/font][/size]
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[/size][/font][font=宋体]路由器[/font][font=Times New Roman]3[/font][font=宋体]台，一台模拟帧中继交换机。[/font][/size]
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[/size][/font][font=Times New Roman]V.35[/font][font=宋体]线缆公头两条。[/font][/size]
[size=2][size=10.5pt][font=Times New Roman][color=#000000]3.8.4
[/color][/font][/size][font=宋体][size=10.5pt][color=#000000]实验步骤[/color][/size][/font][/size]
[size=10.5pt][/size][size=2][font=宋体]第[/font][font=Times New Roman]1[/font][font=宋体]步 在接口上配置帧中继封装。[/font][/size]
[size=2][font=宋体]第[/font][font=Times New Roman]2[/font][font=宋体]步 在子接口上配置[/font][font=Times New Roman]Frame-relay [/font][font=宋体]支持[/font][font=Times New Roman]PPP[/font][font=宋体]。[/font][/size]
[size=2][font=宋体]第[/font][font=Times New Roman]3[/font][font=宋体]步 配置虚拟接口，包括[/font][font=Times New Roman]IP[/font][font=宋体]地址。[/font][/size]
[size=2][font=宋体]第[/font][font=Times New Roman]4[/font][font=宋体]步 配置[/font][font=Times New Roman]PPP[/font][font=宋体]认证类型（可选），虚拟接口封装默认[/font][font=Times New Roman]PPP[/font][font=宋体]。见例[/font][font=Times New Roman]3-20 [/font][font=宋体]所示接口封装。[/font][/size]
[size=2][font=宋体]例[/font][font=Times New Roman]3-20 show interface virtual-template 1[/font][font=宋体]信息[/font][/size]
[font=Times New Roman][size=2]R5#
sho int virtual-TEmplate 1[/size][/font]
[font=Times New Roman][size=2]Virtual-Template1 is down, line protocol is down [/size][/font]
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Hardware is Virtual Template interface[/size][/font]
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Internet address is 172.16.11.5/24[/size][/font]
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MTU 1500 bytes, BW 100000 Kbit, DLY 100000 usec, [/size][/font]
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reliability 255/255, txload 1/255, rxload 1/255[/size][/font]
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Encapsulation PPP, loopback not set[/font][font=宋体] [color=red]＜－默认封装[/color][/font][color=red][font=Times New Roman]PPP[/font][/color][/size]
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DTR is pulsed for 5 seconds on reset[/size][/font]
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LCP Closed[/size][/font]
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Closed: OSICP, BRIDGECP, TAGCP, IPCP, CCP, CDPCP, LLC2, IPXCP, NBFCP[/size][/font]
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BACP, ATCP, IPV6CP[/size][/font]
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Last input never, output never, output hang never[/size][/font]
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Last clearing of "show interface" counters 00:24:25[/size][/font]
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Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0[/size][/font]
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Queueing strategy: fifo[/size][/font]
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Output queue :0/40 (size/max)[/size][/font]
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5 minute input rate 0 bits/sec, 0 packets/sec[/size][/font]
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5 minute output rate 0 bits/sec, 0 packets/sec[/size][/font]
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0 packets input, 0 bytes, 0 no buffer[/size][/font]
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Received 0 broadcasts, 0 runts, 0 giants, 0 throttles[/size][/font]
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0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort[/size][/font]
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0 packets output, 0 bytes, 0 underruns[/size][/font]
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0 output errors, 0 collisions, 0 interface resets[/size][/font]
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0 output buffer failures, 0 output buffers swapped out[/size][/font]
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0 carrier transitions[/size][/font]
[font=Times New Roman][size=2]R5# sho run[/size][/font]
[font=Times New Roman][size=2]R5#[/size][/font]
[size=2][size=10.5pt][font=Times New Roman][color=#000000]3.8.5
[/color][/font][/size][font=宋体][size=10.5pt][color=#000000]完整配置[/color][/size][/font][/size]
[size=10.5pt][/size][size=2][font=宋体]例[/font][font=Times New Roman]3-21 R5[/font][font=宋体]的完整配置[/font][/size]
[font=Times New Roman][size=2]hostname R5[/size][/font]
[font=Times New Roman][size=2]![/size][/font]
[font=Times New Roman][size=2]interface Serial1/1[/size][/font]
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no ip address[/size][/font]
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encapsulation frame-relay[/size][/font]
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serial restart_delay 0[/size][/font]
[font=Times New Roman][size=2]![/size][/font]
[font=Times New Roman][size=2]interface Serial1/1.1 point-to-point[/size][/font]
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frame-relay interface-dlci 516 ppp Virtual-Template1[/size][/font]
[font=Times New Roman][size=2]![/size][/font]
[font=Times New Roman][size=2]interface Virtual-Template1[/size][/font]
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ip address 172.16.11.5 255.255.255.0[/size][/font]
[font=Times New Roman][size=2]![/size][/font]
[font=Times New Roman][size=2] [/size][/font]
[size=2][font=宋体]例[/font][font=Times New Roman]3-21 R6[/font][font=宋体]的完整配置[/font][/size]
[font=Times New Roman][size=2]hostname R6[/size][/font]
[font=Times New Roman][size=2]![/size][/font]
[font=Times New Roman][size=2]interface Serial1/0[/size][/font]
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no ip address[/size][/font]
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encapsulation frame-relay[/size][/font]
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serial restart_delay 0[/size][/font]
[font=Times New Roman][size=2]![/size][/font]
[font=Times New Roman][size=2]interface Serial1/0.1 point-to-point[/size][/font]
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frame-relay interface-dlci 615 ppp Virtual-Template1[/size][/font]
[font=Times New Roman][size=2]![/size][/font]
[font=Times New Roman][size=2]interface Virtual-Template1[/size][/font]
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ip address 172.16.11.6 255.255.255.0[/size][/font]
[font=Times New Roman][size=2]![/size][/font]
[size=2][size=10.5pt][font=Times New Roman][color=#000000]3.8.6
[/color][/font][/size][font=宋体][size=10.5pt][color=#000000]验证配置[/color][/size][/font][/size]
[size=10.5pt][/size][size=2][font=宋体]使用[/font][font=Times New Roman]show interface virtual-template 1[/font][font=宋体]显示接口状态。[/font][/size]
[size=2][font=宋体]使用[/font][font=Times New Roman]show running-config [/font][font=宋体]显示配置信息。[/font][/size]
[size=2][font=宋体]使用[/font][font=Times New Roman]ping[/font][font=宋体]测试连通性。[/font][/size]
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