前言
本文为点对点协议(PPP)背对背连接提供示例配置。 您能使用它验证您的连接和硬件适当地运作。
硬件和软件版本
- 此配置是 可适用的对所有Cisco IOS软件版本。
- DCE边用广域网DCE电缆连接。
- DTE边用广域网DTE电缆连接。
欲知关于广域网DCE/DTE电缆的更多信息参见 串行电缆 说明文件。
网络图
本文根据以下配置：
在此配置， Prasit作为DCE和Spicey是DTE。
配置
| Prasit |
interface Serial0
ip address 5.0.2.1 255.255.255.0
encapsulation ppp
clockrate 64000
no cdp enable
|
| Spicey |
interface Serial1
ip address 5.0.2.2 255.255.255.0
encapsulation ppp
no cdp enable
|
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show命令
使用以下show命令测试您的网络适当地运行：
show controllers
ping
show interfaces serial x
如下所示的输出是输入这些命令的结果在我们在此示 例配置使用的设备。
我们能使用 show controllers命令表示， Prasit是DCE和Spicey是DTE。 此命令提供您信息物理层是否 工作并且什么类型的电缆连接。
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#
