前言
本文为高级数据链路控制（HDLC）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 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电缆的更多信息请点击此处 。
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
clockrate 64000
no cdp enable
Spicey
interface Serial1
ip address 5.0.2.2 255.255.255.0
no cdp enable
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
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， 物理层工作和确定什么类型的电缆连接。我们能从输出发现 在该Prasit之下是DCE和Spicey是DTE：
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
在Prasit，输入以下命令：
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 = 28/31/32 ms
prasit#show interfaces serial 0
Serial0 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 HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:04, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:02:23
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
29 packets input, 1868 bytes, 0 no buffer
Received 14 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
30 packets output, 1890 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
prasit#
Spicey
输入以下命令在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 HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:07, output 00:00:03, output hang never
Last clearing of "show interface" counters 00:03:35
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, 1 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
41 packets input, 2524 bytes, 0 no buffer
Received 21 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
46 packets output, 2980 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=up
spicey#
【责编:admin】
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