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绝对精品:CISCO配置命令大全3

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lnxxnchzyl 发表于 2009-7-30 16:59:00 | 显示全部楼层 |阅读模式
E1端口配置
   
  在Cisco 4500,4700,7000和7500系列里面均支持E1(2.048Mbps)数率的接口.每一个E1端口可以按时隙分成30路64K数据线路和2路信号线路.这30个64K数据线路每一路均可以当作一条64K的专线.
   
  功 能 命 令
  在配置模式下,定义Controller E1 controller e1 slot/port
  定义line code linecode {ami |hdb3}
  定义字符帧 framing {crc4 |no-crc4}
  定义E1组 channel-group number timeslots range [speed {48| 56| 64}]
  指定串口属于那一个channel-group组 interface serial slot/port:channel-group
  注:slot/port----是针对7000或7500系列的,故区分槽口号和端口号.
  linecode----默认是HDB3.
  framing----默认是crc4,要与电信局参数匹配.
  channel-group----每个E1可以分成30个channel-group,把channel-group和时间槽对应起来.channel-group是0-30,timeslots是1-31.
  interface serial----在定义完E1 channel-group后,我们把group赋予成一个虚拟串口.
  具体的请参阅"Channelized E1 Interface Example"实例.
  4、配置X.25
   
  X.25配置完成如下工作:
  功 能 命 令
  设置X.25模式 encapsulation x25 [dte|dce]
  设置最大虚电路数 x25 htc max-vc-number
  设置X.121地址 x25 address x121-address
  建立IP地址与X.121地址对应 x25 map ip ip-address x121-addres [broadcast]
  htc----htc是最大的虚电路数,因为许多X.25交换机是从高到低建立虚电路的,max-vc-number不能超过申请的最大值.
  请参阅"X.25 Example"的配置实例.
  5、配置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。
  A.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 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
  B. 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
  !
  C. 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-group number timeslots range1
  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 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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