CISCO路由器广域网协议设置HDLC

CISCO路由器广域网协议设置HDLCHDLCHDLC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. 有关命令端口设置任务命令设置HDLC封装encapsulation hdlc设置DCE端线路速度clockrate speed复位一个硬件接口clear interface serial unit显示接口状态show interfaces serial [unit] 1注:1.以下给出一个显示 Cisco 同步串口状态的例子.Router#show interface serial 0Serial 0 is up, line protocol is upHardware is MCI SerialInternet address is 150.136.190.203, subnet mask is 255.255.255.0MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255Encapsulation HDLC, loopback not set, keepalive set (10 sec)Last input 0:00:07, output 0:00:00, output hang neverOutput queue 0/40, 0 drops; input queue 0/75, 0 dropsFive minute input rate 0 bits/sec, 0 packets/secFive minute output rate 0 bits/sec, 0 packets/sec16263 packets input, 1347238 bytes, 0 no bufferReceived 13983 broadcasts, 0 runts, 0 giants2 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 2 abort22146 packets output, 2383680 bytes, 0 underruns0 output errors, 0 collisions, 2 interface resets, 0 restarts1 carrier transitions2. 举例设置如下：Router1:interface Serial0ip address 192.200.10.1 255.255.255.0clockrate 1000000Router2:interface Serial0ip address 192.200.10.2 255.255.255.03. 举例使用E1线路实现多个64K专线连接.相关命令:任务命令进入 controller 配置模式controller {t1 | e1 } number选择帧类型framing {crc4 | no-crc4}选择 line-code 类型linecode {ami | b8zs | hdb3}建立逻辑通道组与时隙的映射channel-groupnumber timeslotsrange1显示 controllers 接口状态show controllers e1 [slot/port]2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 e1e1 0/0 is up.Applique type is Channelized E1 - unbalancedFraming is CRC4, Line Code is HDB3 No alarms detected.Data in current interval (725 seconds elapsed)：0 Line Code Violations, 0 Path Code Violations0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail SecsTotal 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N0-CRC4,非平衡链路，路由 器具体设置如下:shanxi#wri tBuilding configuration...Current configuration:!version 11.2no service udp-small-serversno service tcp-small-servers!hostname shanxi!enable secret 5 $1$XN08$Ttr8nfLoP9.2RgZhcBzkk/enable password shanxi!!ip subnet-zerocontroller E1 0frami ng N0-CRC4chann el-group 0 timeslots 1channel-group 1 timeslots 2channel-group 2 timeslots 3!interface Ethernet0ip address 133.118.40.1 255.255.0.0media-type 10BaseT!interface Ethernet1no ip addressshutdown!interface Serial0:0ip address 202.119.96.1 255.255.255.252 no ip mroute-cache!interface Serial0:1ip address 202.119.96.5 255.255.255.252no ip mroute-cache!interface Serial0:2ip address 202.119.96.9 255.255.255.252no ip mroute-cache!no ip classlessip route 133.210.40.0 255.255.255.0 Serial0:0ip route 133.210.41.0 255.255.255.0 Serial0:1ip route 133.210.42.0 255.255.255.0 Serial0:2 !line con 0line aux 0line vty 0 4password shanxi loginend。