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至顶网网络频道HDLC协议配置

HDLC协议配置

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HDLC是CISCO路由器使用的缺省协议,一台新路由器在未指定封装协议时默认使用HDLC封装。以下例子为E1连接3条64K专线, 帧类型为NO-CRC4,非平衡链路,路由器具体设置如下.

作者:中国IT实验室 2007年9月18日

关键字: 路由协议 EIGRP igrp SNMP CISCO 网络协议

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  一、HDLC

  

  HDLC是CISCO路由器使用的缺省协议,一台新路由器在未指定封装协议时默认使用HDLC封装。

  

  1.    有关命令

  

  端口设置

  

   

  

  注:1.以下给出一个显示Cisco同步串口状态的例子.

  

  Router#show interface serial 0

  

  Serial 0 is up, line protocol is up

  

  Hardware is MCI Serial

  

  Internet address is 150.136.190.203, subnet mask is 255.255.255.0

  

  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255

  

  Encapsulation HDLC, loopback not set, keepalive set (10 sec)

  

  Last input 0:00:07, output 0:00:00, output hang never

  

  Output queue 0/40, 0 drops; input queue 0/75, 0 drops

  

  Five minute input rate 0 bits/sec, 0 packets/sec

  

  Five minute output rate 0 bits/sec, 0 packets/sec

  

  16263 packets input, 1347238 bytes, 0 no buffer

  

  Received 13983 broadcasts, 0 runts, 0 giants

  

  2 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 2 abort

  

  22146 packets output, 2383680 bytes, 0 underruns

  

  0 output errors, 0 collisions, 2 interface resets, 0 restarts

  

  1 carrier transitions    

  

  2.    举例

  

   

  

  设置如下:

  

  Router1:

  

  interface Serial0

  

   ip address 192.200.10.1 255.255.255.0

  

   clockrate 1000000

  

  Router2:

  

  interface Serial0

  

   ip address 192.200.10.2 255.255.255.0

  

  !

  

  3.   举例使用E1线路实现多个64K专线连接.

  

  相关命令:

  

  

  

  注: 1. 当链路为T1时,channel-group编号为0-23, Timeslot范围1-24; 当链路为E1时, channel-group编号为0-30, Timeslot范围1-31. 

  

  2.使用show controllers e1观察controller状态,以下为帧类型为crc4时controllers正常的状态.

  

  Router# show controllers e1

  

  e1 0/0 is up.

  

  Applique type is Channelized E1 - unbalanced

  

  Framing is CRC4, Line Code is HDB3 No alarms detected.

  

  Data in current interval (725 seconds elapsed):

  

  0 Line Code Violations, 0 Path Code Violations

  

  0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

  

  0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

  

  Total Data (last 24 hours)   0 Line Code Violations, 0 Path Code Violations,

  

  0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,

  

   0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

  

  以下例子为E1连接3条64K专线, 帧类型为NO-CRC4,非平衡链路,路由器具体设置如下:

  

  shanxi#wri t

  

  Building configuration...

  

  Current configuration:

  

  !

  

  version 11.2

  

  no service udp-small-servers

  

  no service tcp-small-servers

  

  !

  

  hostname shanxi

  

  !

  

  enable secret 5 $1$XN08$Ttr8nfLoP9.2RgZhcBzkk/

  

  enable password shanxi

  

  !

  

  !

  

  ip subnet-zero

  

  !

  

  controller E1 0

  

  framing NO-CRC4

  

  channel-group 0 timeslots 1

  

  channel-group 1 timeslots 2

  

  channel-group 2 timeslots 3

  

  !

  

  interface Ethernet0

  

  ip address 133.118.40.1 255.255.0.0

  

  media-type 10BaseT

  

  !

  

  interface Ethernet1

  

  no ip address

  

  shutdown

  

  !

  

  interface Serial0:0

  

  ip address 202.119.96.1 255.255.255.252

  

  no ip mroute-cache

  

  !

  

  interface Serial0:1

  

  ip address 202.119.96.5 255.255.255.252

  

  no ip mroute-cache

  

  !

  

  interface Serial0:2

  

  ip address 202.119.96.9 255.255.255.252

  

  no ip mroute-cache

  

  !

  

  no ip classless

  

  ip route 133.210.40.0 255.255.255.0 Serial0:0

  

  ip route 133.210.41.0 255.255.255.0 Serial0:1

  

  ip route 133.210.42.0 255.255.255.0 Serial0:2

  

  !

  

  line con 0

  

  line aux 0

  

  line vty 0 4

  

  password shanxi

  

  login

  

  !

  

  end

  

  

  

  

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