前言

本文為點對點協(xié)議(PPP)背對背連接提供示例配置。 您能使用它驗證您的連接和硬件適當?shù)剡\作。

硬件和軟件版本

• 此配置是 可適用的對所有Cisco IOS軟件版本。
• DCE邊用廣域網(wǎng)DCE電纜連接。
• DTE邊用廣域網(wǎng)DTE電纜連接。

欲知關于廣域網(wǎng)DCE/DTE電纜的更多信息參見 串行電纜 說明文件。

網(wǎng)絡圖

本文根據(jù)以下配置：

在此配置， Prasit作為DCE和Spicey是DTE。

配置

interface Serial0
   ip address 5.0.2.1 255.255.255.0
   encapsulation ppp
   clockrate 64000
   no cdp enable
 

interface Serial1
   ip address 5.0.2.2 255.255.255.0
   encapsulation ppp
   no cdp enable
 

[page]

show命令
使用以下show命令測試您的網(wǎng)絡適當?shù)剡\行：

show controllers
ping
show interfaces serial x
如下所示的輸出是輸入這些命令的結果在我們在此示 例配置使用的設備。

我們能使用 show controllers命令表示， Prasit是DCE和Spicey是DTE。 此命令提供您信息物理層是否 工作并且什么類型的電纜連接。

prasit#show controllers serial 0
HD unit 0, idb = 0x1D3A2C, driver structure at 0x1DAFE8
buffer size 1524 HD unit 0, V.35 DCE cable, clockrate 64000
spicey#show controllers serial 1
HD unit 1, idb = 0x153E94, driver structure at 0x15A1F8
buffer size 1524 HD unit 1, V.35 DTE cable
Prasit
prasit#ping 5.0.2.2 Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 5.0.2.2, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/32 ms
prasit#show interfaces serial 0Serial0 is up, line protocol is up Hardware is HD64570 Internet address is 5.0.2.1/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation PPP, loopback not set Keepalive set (10 sec) LCP Open Open: IPCP Last input 00:00:05, output 00:00:05, output hang never Last clearing of "show interface" counters 00:09:58 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: weighted fair Output queue: 0/1000/64/0 (size/max total/threshold/drops) Conversations 0/1/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) Available Bandwidth 1158 kilobits/sec 5 minute input rate 0 bits/sec, 1 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 122 packets input, 2824 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 132 packets output, 2964 bytes, 0 underruns 0 output errors, 0 collisions, 2 interface resets 0 output buffer failures, 0 output buffers swapped out 6 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=upprasit#
Spicey

spicey#ping 5.0.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 5.0.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/32 ms
spicey#show interfaces serial 1
Serial1 is up, line protocol is up
Hardware is HD64570
Internet address is 5.0.2.2/24
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, loopback not set
Keepalive set (10 sec)
LCP Open
Open: IPCP
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters 00:09:27
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
130 packets input, 3392 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
129 packets output, 3378 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
spicey#