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CESM-8 非结构化数据传输

2016 年 10 月 24 日 - 机器翻译
其他版本: PDFpdf | 英语 (2015 年 8 月 22 日) | 反馈


目录


简介

本文为非结构化数据传输提供配置示例在电路仿真服务Module-8 (CESM-8)卡。

先决条件

要求

在尝试此配置前,请保证您对熟悉:

  • 思科CESM-8

  • Cisco MGX 8220

  • Cisco MC3810

使用的组件

本文档中的信息基于以下软件和硬件版本:

  • MGX 8220/8250固件4.1.x和以后支持CESM-8T1E1卡集

在本文的所有配置示例根据与此固件/引导代码/硬件修订版的一个CESM-8卡:

wss-mgxb.1.10.CESM.a > dspcd
        ModuleSlotNumber: 10
        FunctionModuleState: Active
        FunctionModuleType: CESM-8T1
        FunctionModuleSerialNum: 754950
        FunctionModuleHWRev: aa
        FunctionModuleFWRev: 4.1.01
        FunctionModuleResetReason: Local DRAM parity reset
        LineModuleType: LM-RJ48-8T1
        LineModuleState: Present
        mibVersionNumber: 20
        configChangeTypeBitMap: CardCnfChng, LineCnfChng
        cardIntegratedAlarm: Clear
        fab number: 28-2199-02

用于配置示例的MC3810多业务接入集中器单元作为客户端前置设备(CPE)设备根据级此的软件/的硬件版本:

wss-3810a# show version 
    Cisco Internetwork Operating System Software 
    IOS (tm) MC3810 Software (MC3810-A2INR3V2-M), Version 11.3(1)MA62, EARLY DEPLOY 
    Copyright (c) 1986-1998 by cisco Systems, Inc.
    Compiled Mon 26-Oct-98 19:35 by runyan 
    Image text-base: 0x00023000, data-base: 0x0064BFDC 

    ROM: System Bootstrap, Version 11.3(1)MA1, MAINTENANCE INTERIM SOFTWARE 
    ROM: MC3810 Software (MC3810-WBOOT-M), Version 11.3(1)MA1, MAINTENANCE INTERIM 

    wss-3810a uptime is 3 days, 1 hour, 20 minutes 
    System restarted by reload 
    System image file is "flash:mc3810-a2inr3v2-mz.113-1.MA62", booted via flash: 

    Cisco MC3810 (MPC860) processor (revision 06.07) with 27648K/5120K bytes of mem. 
    Processor board ID 09502861 
    PPC860 PowerQUICC, partnum 0x0000, version A03(0x0013) 
    Bridging software. 
    MC3810 SCB board (v05.A0) 
    1 Multiflex T1(slot 3) RJ45 interface(v01.K0) 
    1 Multiflex T1(slot 4) RJ45 interface(v01.K0) 
    1 6-DSP(slot2) Voice Compression Module(v01.K0) 
    1 6-DSP(slot5) Voice Compression Module(v01.K0) 
    1 Ethernet/IEEE 802.3 interface(s) 
    4 Serial network interface(s) 
    2 Channelized T1/PRI port(s) 256K bytes of non-volatile configuration memory. 
    8192K bytes of processor board System flash (INTEL28F016)

    Configuration register is 0x2102 

wss-3810a#

本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始(默认)配置。如果您使用的是真实网络,请确保您已经了解所有命令的潜在影响。

规则

有关文档规则的详细信息,请参阅 Cisco 技术提示规则

背景信息

CESM-8卡提供100百分比在CESM-4卡的端口密度增加、以及多种时钟频率和成帧功能的增进。CESM-4卡支持与同步计时的仅T1/E1基本的非结构化服务。CESM-8提供基本的非结构化服务和基本/随路信令(CAS)结构化服务。

本文测试CESM-8卡的仅非结构化服务功能,特殊时钟频率策划(同步, Synchronous Residual Time Stamp (SRTS)和可适应)和framingonVCdisconnect功能。参考这些规格欲知关于电路仿真或非结构化数据传输的更多背景信息:

配置

CESM-8支持两条T1 & E1线路。使用同一一组命令,两种线路类型配置。

  • 线路是在卡将配置的第一个实体。

  • 其次,逻辑端口用有效线路配置并且关联。这些端口在卡和使用的CES种类定义了范围数字信号电平0s (Ds0s)使用(构造或无特定结构的)。

  • 最后,信道创建为了每个端口能通过ATM网络路由数据。

此部分描述这些配置:

注意: 要查找本文档所用命令的其他信息,请使用命令查找工具仅限注册用户)。

同步计时

在本例中,我们通过他们的MultiFlex Trunk (MFT)模块(控制器T1 0/Serial 2)连接MC3810单元WSS-3810A和WSS-3810B使用高级数据链路控制(HDLC)作为第2层协议。每Multiflex中继模块(MFT)连接到在其各自CESM卡的Line2。在测试网络的所有设备从在WSS-BPXC的内部振荡器派生他们的定时。

此示例使用此网络图:

/image/gif/paws/22236/UDT-Synchronous.gif

  1. CESM —构建线路

    启动在两个CESM卡的线路。line configuration包括相关的T1或E1线路的物理层参数。

    MGX-B
    wss-mgxb.1.10.CESM.a > addln 2
    
    wss-mgxb.1.10.CESM.a > dsplns
    Line Conn    Type       Status/Coding    Length       XmtClock Alarm Stats
         Type                                              Source        Alarm
    ---- ----- ------------ ------ -------- ------------- -------- ----- -----
    10.1 RJ-48 dsx1ESF      Dis/dsx1B8ZS    0-131 ft      LocalTim 
    10.2 RJ-48 dsx1ESF      Ena/dsx1B8ZS    0-131 ft      LocalTim  No    No 
    10.3 RJ-48 dsx1ESF      Dis/dsx1B8ZS    0-131 ft      LocalTim 
    10.4 RJ-48 dsx1ESF      Dis/dsx1B8ZS    0-131 ft      LocalTim 
    10.5 RJ-48 dsx1ESF      Dis/dsx1B8ZS    0-131 ft      LocalTim 
    10.6 RJ-48 dsx1ESF      Dis/dsx1B8ZS    0-131 ft      LocalTim 
    10.7 RJ-48 dsx1ESF      Dis/dsx1B8ZS    0-131 ft      LocalTim 
    10.8 RJ-48 dsx1ESF      Dis/dsx1B8ZS    0-131 ft      LocalTim 
          
    wss-mgxb.1.10.CESM.a > dspln 2
    LineNum:                   2
    LineConnectorType:         RJ-48
    LineEnable:                Enabled
    LineType:                  dsx1ESF
    LineCoding:                dsx1B8ZS
    LineLength:                0-131 ft
    LineXmtClockSource:        LocalTiming
    LineLoopbackCommand:       NoLoop
    LineSendCode:              NoCode
    LineUsedTimeslotsBitMap:   0xffffff
    LineLoopbackCodeDetection: codeDetectDisabled

    MGX-C
    wss-mgxc.1.10.CESM.a > addln 2
    

  2. CESM —配置端口

    添加逻辑端口。端口为一系列的Ds0s提供一逻辑分组在特定线路并且定义了CES模式。使用非结构化服务,线路的所有Ds0s在一个端口被归入。

    MGX-B
    wss-mgxb.1.10.CESM.a > addport 21 2 1 24 2
          
    wss-mgxb.1.10.CESM.a > dspport 21
     SlotNum:                     10
     PortLineNum:                 2
     PortNum:                     21
     PortRowStatus:               Add
     PortNumOfSlots:              24
     PortDs0ConfigBitMap(1stDS0): 0xffffff(1)
     PortSpeed:                   1544kbps
     PortType:                    unstructured
     PortState:                   Active

    MGX-C
    wss-mgxc.1.10.CESM.a > addport 22 2 1 24 2
    

  3. CESM —添加信道

    逻辑信道控制连接的ATM侧参数。林克一条逻辑信道到一个逻辑端口。这里,我们配置基本服务的端口(随路信令(CAS)为非结构化数据传输不是适当的),并且设置条件要求发送所有1,如果信道体验信元丢失。我们然后配置信道缓冲大小、信元延迟变化容限和计时值。

    MGX-B
    wss-mgxb.1.10.CESM.a > addchan 121 21 1 0 255 15
          
    wss-mgxb.1.10.CESM.a > cnfchan 121 1000 1000 0 1 1 1 
          
    wss-mgxb.1.10.CESM.a > dspchan 121
     ChanNum:                  121
     ChanRowStatus:            Mod
     ChanLineNum:              2
     ChanMapVpi:               10
     ChanMapVci:               121
     ChanCBRService:           unstructured
     ChanClockMode:            Synchronous
     ChanCAS:                  Basic
     ChanPartialFill:          47
     ChanMaxBufSize:           384 bytes
     ChanCDV:                  1000 micro seconds
     C L I P:                  1000 milliseconds
     ChanLocalRemoteLpbkState: Disabled
     ChanTestType:             TestOff
     ChanTestState:            NotInProgress
     ChanRTDresult:            65535 ms
     ChanPortNum               21
     ChanConnType              PVC
     ISDetType                 DetectionDisabled
     CondData                  255
     CondSignalling            15
     ExtISTrig                 DisableIdleSupression
     ISIntgnPeriod             4095 seconds 
     ISSignallingCode          0
     OnHookCode                1

    MGX-C
    wss-mgxc.1.10.CESM.a > addchan 122 22 1 0 255 15
    
    wss-mgxc.1.10.CESM.a > cnfchan 122 1000 1000 0 1 1 1
    

  4. CESM —检查信道统计数据

    #,如果我们查看信道统计数据在配置时期,我们看到一些确定问题。在每个卡的相关的信道看上去发送信元到网络,但是都信道不报告接收任何信元,因而告警条件信道状态的。此处问题是我们未构件永久虚拟电路(PVC)传输AAL1信元从CESM卡到CESM卡。

    MGX-B
    wss-mgxb.1.10.CESM.a > clrchancnts
          
    wss-mgxb.1.10.CESM.a > dspchancnt 121
     ChanNum:                  121
     Chan State:               alarm
     Chan RCV ATM State:       Normal
     Chan XMT ATM State:       Normal
     Cell Loss Status:         Cell Loss
     Reassembled Cells:        0
     Generated Cells:          158171
     Header Errors:            0
     Seqence Mismatches:       0
     Lost Cells:               0
     Channel Uptime (secs.)    186
     Signalling Status         Offhook

  5. BPX —添加CBR连接

    为了传送从一个CESM的信元到其他,我们需要建立从BXM中继卡的一恒定比特率(CBR)连接哪些每个MGX架子暂停。由于此PVC将传送一T1无特定结构的数据流,我们配置信元速率在4107每秒信元数。

    (193个位/帧* 8000帧/sec)/(47个字节/信元* 8个位/字节) = 4106.38信元/sec

    BPX-B
    wss-bpxb     TN     StrataCom     BPX 8600     9.1.04     Nov. 13 1998     14:54 EST 
          
     Local        Remote        Remote                               Route
     Channel      NodeName      Channel      State       Type        Avoid     COS O
     3.1.10.121   wss-bpxc      10.1.10.122  Ok          cbr                    0  L
          
    Last Command: addcon 3.1.10.121 wss-bpxc 10.1.10.122 cbr 4107 * 1000 * Y
          
    ---------------------------------------------------------------------------
          
    wss-bpxb     TN     StrataCom     BPX 8600     9.1.04     Nov. 13 1998     15:41 EST 
          
    Conn: 3.1.10.121       wss-bpxc  10.1.10.122          cbr        Status:OK
       PCR(0+1)    % Util    CDVT(0+1)   Policing 
       4107/4107  100/100    1000/1000     4/4
    Owner: LOCAL  Restriction: NONE   COS: 0
    Trunk Cell Routing Restrict: Y
    Path:   wss-bpxb 1.1-- 1.1wss-bpxc
    Pref:   Not Configured
          
    wss-bpxb      BXM      : OK         wss-bpxc     BXM       : OK
                  Line 3.1 : OK                      Line 10.1 : OK
                  OAM Cell RX: Clear                 NNI       : OK
                  NNI      : OK
          
    Conn:   3.1.10.121       wss-bpxc     10.1.10.122    cbr     Status:OK
       PCR(0+1)     % Util       CDVT(0+1)       Policing
       4107/4107    100/100      1000/1000          4
          
    Trunk Cell Routing Restrict: Y
          
    Last Command: dspcon 3.1.10.121
    

  6. CESM —箴言报连接统计

    现在,当我们查看在CESM卡时的信道计数器;事查找好。注意的关键事是连接不是报警,并且信元里里外外是,实质上,同样。

    MGX-B
    wss-mgxb.1.10.CESM.a > clrchancnts
     
    wss-mgxb.1.10.CESM.a > clrsarcnts
     
    wss-mgxb.1.10.CESM.a > dspchancnt 121
    ChanNum:                   121
    Chan State:                okay
    Chan RCV ATM State:        Normal
    Chan XMT ATM State:        Normal
    Cell Loss Status:          No Cell Loss
    Reassembled Cells:         40401
    Generated Cells:           40401
    Header Errors:             0
    Seqence Mismatches :       0
    Lost Cells:                0
    Channel Uptime (secs.)     345
    Signalling Status          Offhook
     
    wss-mgxb.1.10.CESM.a > dspsarcnt 121
                              SarShelfNum:         1
                              SarSlotNum:          10
                              SarChanNum:          121
                                    Tx                      Rx
                              ---------------       ---------------
      Total Cells:            85571                 85571
      Total CellsCLP:         0                     0
      Total CellsAIS:         0                     0
      Total CellsFERF:        0                     0
      Total CellsEnd2EndLpBk: 0                     0
      Total CellsSegmentLpBk: 0                     0
      RcvCellsDiscOAM:                              0

  7. BPX —箴言报连接统计

    再次,注意的关键点在此屏幕是网对端口的信元端口对网和是同样。如果为连接看到在PCR上的Avg CPS, %util在100或者其中任一dscd上抵抗计时,您很可能未计算数据流的正确PCR。

    BPX-B
    wss-bpxb       TN    StrataCom       BPX 8600  9.1.04    Nov. 13 1998 14:57 EST 
     
    Channel Statistics for 3.1.10.121  Cleared: Nov. 13 1998 14:57  (-)
    PCR: 4107/4107 cps      Collection Time: 0 day(s) 00:00:33      Corrupted: NO
       Traffic      Cells      CLP      Avg CPS   %util  Chan Stat Addr: 31132770
    From Port   :    137416          0     4106      99
    To Network  :    137416    ---         4106      99
    From Network:    137416          0     4106      99
    To Port     :    137416          0     4106      99
                                                                                    
    Rx Frames Rcv :         0  NonCmplnt Dscd:         0  Rx Q Depth    :         0
    Tx Q Depth    :         0  Rx CLP0       :    137416  Rx Nw CLP0    :    137416
    Igr VSVD ACR  :         0  Egr VSVD ACR  :         0  Tx Clp 0      :    137416
    Rx Clp 0+1    :    137416  Tx Clp 0 Dscd :         0  Tx Clp 1 Dscd :         0
    Tx Clp0+1 Dscd:         0
     
    This Command: dspchstats 3.1.10.121 1
    

  8. 验证时钟频率

    在本例中的计时安排有跟踪他们的时钟的所有单元对在WSS-BPXC的内部振荡器。因为BPXC是在网络的最高的路由节点, BPXB自动地采取其从BPXC的时钟。每个MGX架子配置计时其总线带内从其BNM卡。在两个CESM卡的线路是被计时的本地。使用从MFT的恢复时钟并且,每MC3810配置计时其内部总线。MFT不显示任何时钟疏漏,因此定时看起来好端到端(和我们选择MC3810s,因为他们是非常好挑剔的关于他们的定时)。

    BPX-B
    wss-bpxb       TN    StrataCom       BPX 8600  9.1.04    Nov. 13 1998 15:28 EST 
     
                                 Current Clock Source
     
    Source Node:     wss-bpxc
    Source Line:     Internal (CC)
     
    Clock Type:                 
    Clock Frequency: 1544000
     
    Path to Source:
       wss-bpxb 1.1--wss-bpxc
     
    Last Command: dspcurclk
    

    MGX-B
    wss-mgxb.1.3.ASC.a > dspclksrc
      PrimaryClockSource:   Inband from BNM
      SecondaryClockSource: Internal Oscillator
      CurrentClockSource:   Primary
      ClockSwitchState:     NoChange
      ExtClkPresent:        Not Present
      ExtClkSrcImpedance:   100 ohms
      ExtClkConnectorType:     DB-15

    MGX-C
    wss-mgxc.1.4.ASC.a > dspclksrc 
      PrimaryClockSource:   Inband from BNM
      SecondaryClockSource: Internal Oscillator
      CurrentClockSource:   Primary
      ClockSwitchState:     NoChange
      ExtClkPresent:        Not Present
      ExtClkSrcImpedance:   75 ohms
      ExtClkConnectorType:  BNC

    3810-A
    wss-3810a# show network-clocks 
    Priority 1 clock source(desired config): T1 0
    Priority 1 clock source(run-time config): T1 0
    Clock switch delay: 10
    Clock restore delay: 10
    T1 0 is clocking system bus for 1078 seconds.
    Run Priority Queue:  controller0,
     
    wss-3810a# show cont t1 0
    T1 0 is up.
      No alarms detected.
      Framing is ESF, Line Code is B8ZS, Clock Source is Line.
      Data in current interval (17 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

    3810-C
    wss-3810c# show network-clocks
    Priority 1 clock source(desired config): T1 0
    Priority 1 clock source(run-time config): T1 0
    Clock switch delay: 10
    Clock restore delay: 10
    T1 0 is clocking system bus for 1161 seconds.
    Run Priority Queue:  controller0,
          
    wss-3810c# show cont t1 0
    T1 0 is up.
      No alarms detected.
      Framing is ESF, Line Code is B8ZS, Clock Source is Line.
      Data in current interval (53 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

  9. MC3810配置

    3810个配置文件的相关部分下面显示。注意Controller t1 0是MFT和关系到Serial2建立接口在设备。在T1控制器的默认时钟源是线路。为了防止在一3810的计时问题用DVM模块(控制器T1 1),设置在该控制器的时钟源,以便两个控制器不尝试计时总线。

    3810-A
    wss-3810a# wr t
    Building configuration...
     
    Current configuration:
    !
    version 11.3
    !
    hostname wss-3810a
    !
    network-clock base-rate 64k
    network-clock-select 1 T1 0
    !
    controller T1 0
     framing esf
     linecode b8zs
     channel-group 0 timeslots 1-24 speed 64
    !
    controller T1 1
     framing esf
     clock source loop-timed
     linecode b8zs
    !
    interface Serial2
     ip address 10.97.100.1 255.255.255.0
    !
    end

    3810-C
    wss-3810c# wr t
    Building configuration...
     
    Current configuration:
    !
    version 11.3
    !
    hostname wss-3810c
    !
    network-clock base-rate 64k
    network-clock-select 1 T1 0
    !
    controller T1 0
     framing esf
     linecode b8zs
     channel-group 0 timeslots 1-24 speed 64
    !
    controller T1 1
     framing esf
     clock source loop-timed
     linecode b8zs
    !
    interface Serial2
     ip address 10.97.100.2 255.255.255.0
    !
    end

Synchronous Residual Time Stamp (SRTS)计时

不幸地,所有网络配置不允许所有设备跟踪他们的时钟源到一参考。对于那些情况,当终端设备不在位置采取从网络时的时钟, SRTS计时允许定时穿过网络。

SRTS运行在这些假定下:

  • 在电路仿真服务(CES)的网络部分的所有元素能跟踪他们的时钟到一参考。

  • CPE能也跟踪他们的时钟到一参考。

明显地, CPE和网络时钟源是不同的参考。如果他们是相同的,我们会使用同步计时。

此示例使用用于同步计时示例的相同的配置,但是我们修改在CESM卡的信道参数使用SRTS,与同步定时相对。然后,我们修改其中一个MC3810单元采取从其内部振荡器的定时。另一个MC3810单元继续采取其从线路的定时。

/image/gif/paws/22236/UDT-SRTS.gif

  1. 1. CESM —SRTS计时的修改信道

    MGX-B
    wss-mgxb.1.10.CESM.a > cnfchan 121 1000 1000 0 2 1 1
    
    wss-mgxc.1.10.CESM.a > cnfchan 122 1000 1000 0 2 1 1
    

  2. MC3810-在3810-A的崔凡吉莱时钟源

    MGX-B
    wss-3810a# conf t
    Enter configuration commands, one per line.  End with CNTL/Z.
    wss-3810a(config)# no network-clock-select 1 T1 0
    wss-3810a(config)# network-clock-select 1 system(SCB) 
    wss-3810a(config)#
    %MC3810_DSX1-5-MC3810_NOTICE: system(SCB) clocking PCM Bus
    %MC3810_DSX1-5-MC3810_NOTICE: system(SCB) clocking PCM Bus
     
    wss-3810a(config-controller)# cont t1 0
    wss-3810a(config-controller)# clock source internal
    wss-3810a(config-controller)# ^Z
    wss-3810a#
    %SYS-5-CONFIG_I: Configured from console by console
    wss-3810a#

  3. MC3810-验证时钟频率

    3810-A
    wss-3810a# show network-clocks 
    Priority 1 clock source(desired config): system(SCB)
    Priority 1 clock source(run-time config): system(SCB)
    Clock switch delay: 10
    Clock restore delay: 10
    system(SCB) is clocking system bus for 51 seconds.
    Run Priority Queue:  system(SCB),
     
    wss-3810a# show cont t1 0
    T1 0 is up.
      No alarms detected.
      Slot 3 CSU Serial #08625445 Model TEB HWVersion 4.70
      Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
      Data in current interval (5 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
    wss-3810a#

    3810-C
    wss-3810c# show network-clocks 
    Priority 1 clock source(desired config): T1 0
    Priority 1 clock source(run-time config): T1 0
    Clock switch delay: 10
    Clock restore delay: 10
    T1 0 is clocking system bus for 3672 seconds.
    Run Priority Queue:  controller0,
     
    wss-3810c# show cont t1 0
    T1 0 is up.
      No alarms detected.
      Slot 3 CSU Serial #06706054 Model TEB HWVersion 4.70
      Framing is ESF, Line Code is B8ZS, Clock Source is Line.
      Data in current interval (40 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
    wss-3810c#

  4. MC3810配置

    这是在新的配置的快速查找MC3810单元的。仅3810A体验所有配置更改。

    3810-A
    wss-3810a# wr t
    Building configuration...
     
    Current configuration:
    !
    version 11.3
    !
    hostname wss-3810a
    !
    network-clock base-rate 64k
    network-clock-select 1 system(SCB)
    !
    controller T1 0
     framing esf
     clock source internal
     linecode b8zs
     channel-group 0 timeslots 1-24 speed 64
    !
    controller T1 1
     framing esf
     clock source loop-timed
     linecode b8zs
    !

    3820-C
    wss-3810c# wr t
    Building configuration...
     
    Current configuration:
    !
    version 11.3
    !
    hostname wss-3810c
    !
    network-clock base-rate 64k
    network-clock-select 1 T1 0
    !
    controller T1 0
     framing esf
     linecode b8zs
     channel-group 0 timeslots 1-24 speed 64
    !
    controller T1 1
     framing esf
     clock source loop-timed
     linecode b8zs
    !

可适应的计时

可适应的计时通常是选择,当您不能附加CPE设备时,并且对同样的网元计时(否则,您会使用同步计时)。也使用它,当您不能附加CPE设备到一个时钟时,并且网元到另一个计时(否则,您会使用SRTS计时)。该留下您与附加一个CPE到一个时钟、另一个CPE到另一个时钟和网元的选项给第三个时钟。这不是一个理想情况用一条租用的线路,并且使用电路仿真不自动地使事更加更好。可适应的计时仅仅调节在根据缓冲区大小的CESM T1/E1接口的传输时钟:当缓冲区获得全双工时,请加速时钟,当缓冲区倒空时,减速时钟。

在本例中,我们通过更改信道时钟配置对可适应和更改在3810-C的时钟频率基本上扩大SRTS配置使用他们的内部时钟,以便两个MC3810单元计时。

/image/gif/paws/22236/UDT-Adaptive.gif

  1. CESM —可适应的计时的修改信道

    MGX-B
    wss-mgxb.1.10.CESM.a > cnfchan 121 1000 1000 0 3 1 1
     
    wss-mgxc.1.10.CESM.a > cnfchan 122 1000 1000 0 3 1 1
    

  2. MC3810-在3810-C的崔凡吉莱时钟源

    3810-C
    wss-3810c# conf t
    Enter configuration commands, one per line.  End with CNTL/Z.
    wss-3810c(config)# no network-clock-select 1 T1 0
    wss-3810c(config)# network-clock-select 1 system(SCB) 
    wss-3810c(config)#
    %MC3810_DSX1-5-MC3810_NOTICE: system(SCB) clocking PCM Bus
    %MC3810_DSX1-5-MC3810_NOTICE: system(SCB) clocking PCM Bus
     
    wss-3810c(config-controller)# cont t1 0
    wss-3810c(config-controller)# clock source internal
    wss-3810c(config-controller)# ^Z
    wss-3810c#
    %SYS-5-CONFIG_I: Configured from console by console
    wss-3810c#

  3. MC3810-验证时钟频率

    正如你在此配置步骤语法看到,事不是一样干净的如同另外两个时钟模式。线路是UP,但是滑动和差错秒很多。查看在BPX节点配置的PVC的报告的信元速率也是有趣的。因为信元速率增加,在MC3810单元的内部时钟明显地运行有点快速。(注意:增加连接的PVC信元速率没有消除滑动/差错秒问题。)

    3810-A
    wss-3810a# show network-clocks
    Priority 1 clock source(desired config): system(SCB)
    Priority 1 clock source(run-time config): system(SCB)
    Clock switch delay: 10
    Clock restore delay: 10
    system(SCB) is clocking system bus for 32 seconds.
    Run Priority Queue:  system(SCB),
    
    wss-3810a# show cont t1 0
    T1 0 is up.
      No alarms detected.
      Slot 3 CSU Serial #08625445 Model TEB HWVersion 4.70
      Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
      Data in current interval (74 seconds elapsed):
         0 Line Code Violations, 945 Path Code Violations
         23 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 1 Degraded Mins
         74 Errored Secs, 74 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
    wss-3810a#

    3810-C
    wss-3810c# show network-clocks
    Priority 1 clock source(desired config): system(SCB)
    Priority 1 clock source(run-time config): system(SCB)
    Clock switch delay: 10
    Clock restore delay: 10
    system(SCB) is clocking system bus for 614 seconds.
    Run Priority Queue:  system(SCB),
    
    wss-3810c# show cont t1 0
    T1 0 is up.
      No alarms detected.
      Slot 3 CSU Serial #06706054 Model TEB HWVersion 4.70
      Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
      Data in current interval (102 seconds elapsed):
         0 Line Code Violations, 1326 Path Code Violations
         66 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 1 Degraded Mins
         94 Errored Secs, 94 Bursty Err Secs, 8 Severely Err Secs, 0 Unavail Secs
    wss-3810c#

    BPX-B
    wss-bpxb       TN    StrataCom       BPX 8600  9.1.04    Nov. 16 1998 13:17 EST 
    
    Channel Statistics for 3.1.10.121  Cleared: Nov. 16 1998 13:17  (/)  Snapshot
    PCR: 4107/4107 cps      Collection Time: 0 day(s) 00:00:32      Corrupted: NO
       Traffic      Cells      CLP      Avg CPS   %util  Chan Stat Addr: 31132770
    From Port   :    131711          0     4108     100
    To Network  :    131711    ---         4108     100
    From Network:    131712          0     4108     100
    To Port     :    131712          0     4108     100
                                                                                    
    Rx Frames Rcv :         0  NonCmplnt Dscd:         0  Rx Q Depth    :         0
    Tx Q Depth    :         0  Rx CLP0       :    131711  Rx Nw CLP0    :    131712
    Igr VSVD ACR  :         0  Egr VSVD ACR  :         0  Tx Clp 0      :    131712
    Rx Clp 0+1    :    131711  Tx Clp 0 Dscd :         0  Tx Clp 1 Dscd :         0
    Tx Clp0+1 Dscd:         0
    
    Last Command: dspchstats 3.1.10.121 1
    

  4. CESM —箴言报连接统计

    在此步骤显示的输出中,请注意CESM卡认为一切正确地作用。授权,下面的语法为本文在60秒复制清除以内计数器,但是没有丢失的信元或其他反常现象。这暗示是AAL1信元获得在CESM卡之间,但是有坚持与严密的MC3810计时要求一致的问题。

    MGX-B
    wss-mgxb.1.10.CESM.a > clrchancnts
    wss-mgxb.1.10.CESM.a > clrsarcnts
    
    wss-mgxb.1.10.CESM.a > dspchancnt 121
    ChanNum:                   121
    Chan State:                okay
    Chan RCV ATM State:        Normal
    Chan XMT ATM State:        Normal
    Cell Loss Status:          No Cell Loss
    Reassembled Cells:         292885
    Generated Cells:           292885
    Header Errors:             0
    Seqence Mismatches :       0
    Lost Cells:                0
    Channel Uptime (secs.)     20391
    Signalling Status          Offhook
    
    wss-mgxb.1.10.CESM.a > dspsarcnt 121
                              SarShelfNum:         1
                              SarSlotNum:          10
                              SarChanNum:          121
                                    Tx                      Rx
                              ---------------       ---------------
      Total Cells:            466696                466698
      Total CellsCLP:         0                     0
      Total CellsAIS:         0                     0
      Total CellsFERF:        0                     0
      Total CellsEnd2EndLpBk: 0                     0
      Total CellsSegmentLpBk: 0                     0
      RcvCellsDiscOAM:                              0

  5. MC3810配置

    3810-A
    wss-3810a# wr t
    Building configuration...
    
    Current configuration:
    !
    version 11.3
    !
    hostname wss-3810a
    !
    network-clock base-rate 64k
    network-clock-select 1 system(SCB)
    !
    controller T1 0
     framing esf
     clock source internal
     linecode b8zs
     channel-group 0 timeslots 1-24 speed 64
    !
    controller T1 1
     framing esf
     clock source loop-timed
     linecode b8zs
    !

    3810-C
    wss-3810c# wr t
    Building configuration...
    
    Current configuration:
    !
    version 11.3
    !
    hostname wss-3810c
    !
    network-clock base-rate 64k
    network-clock-select 1 system(SCB)
    !
    controller T1 0
     framing esf
     clock source internal
     linecode b8zs
     channel-group 0 timeslots 1-24 speed 64
    !
    controller T1 1
     framing esf
     clock source loop-timed
     linecode b8zs

在VC断开的帧

framingOnVcDisconnect端口选项,当连接对CESM-8时的传统CPE使用。此选项是类似非结构化端口。在framingOnVcDisconnect和非结构化端口之间的唯一的区别是,当有网络端信元丢失时。一旦非结构化端口,有条件的数据在线路发送。一旦framingOnVcDisconnect,从CPE接收的线路数据被反向循环对CPE,因此CPE不会疏松帧。

  1. CESM —framingOnVcDisconnect的被重新配置的波尔特

    不幸地,您不能在任何时间重新解释端口类型。您必须首先删除联合频道用端口,重新配置端口,再追加信道和调整信道配置。这些配置显示步骤:

    MGX-B
    wss-mgxb.1.10.CESM.a > delchan 121
    wss-mgxb.1.10.CESM.a > delport 21
    wss-mgxb.1.10.CESM.a > addport 21 2 1 24 3
    wss-mgxb.1.10.CESM.a > addchan 121 21 1 0 255 15
    wss-mgxb.1.10.CESM.a > cnfchan 121 1000 1000 0 2 1 1
     
    wss-mgxb.1.10.CESM.a > dspport 21
      SlotNum:                      10
      PortLineNum:                  2
      PortNum:                      21
      PortRowStatus:                Add
      PortNumOfSlots:               24
      PortDs0ConfigBitMap(1stDS0):  0xffffff(1)
      PortSpeed:                    1544kbps
      PortType:                     framingOnVcDisconnect
      PortState:                    Active
    
    ss-mgxb.1.10.CESM.a > dspchans
        Channel     ChanNum   Status   CDV   MaxBufSize   CLIP    CBRservice
      ------------  -------   ------  -----  ----------  ------  ------------
      10.2.21.121     121      Mod     1000      384      1000   unstructured
     
      Number of channels:    1

    MGX-C
    wss-mgxc.1.10.CESM.a > delchan 122
    wss-mgxc.1.10.CESM.a > delport 22
    wss-mgxc.1.10.CESM.a > addport 22 2 1 24 3
    wss-mgxc.1.10.CESM.a > addchan 122 22 1 0 255 15
    wss-mgxc.1.10.CESM.a > cnfchan 122 1000 1000 0 2 1 1
     
    wss-mgxc.1.10.CESM.a > dspport 22
      SlotNum:                      10
      PortLineNum:                  2
      PortNum:                      22
      PortRowStatus:                Add
      PortNumOfSlots:               24
      PortDs0ConfigBitMap(1stDS0):  0xffffff(1)
      PortSpeed:                    1544kbps
      PortType:                     framingOnVcDisconnect
      PortState:                                      Active

  2. MS3810 —与framingOnVcDisconnect的CPE行为

    使用BPX-C下来PVC之间BPX-B和,我们看到在3810个单元的T1控制器不断开,并且HDLC Keepalive被反向循环到MC3810单元。然而, CESM卡仍然显示信元丢失和警报状态。

    BPX-B
    wss-bpxb       TN    StrataCom       BPX 8600  9.1.04    Nov. 13 1998 15:51 EST 
     
     Local           Remote      Remote                             Route
     Channel         NodeName    Channel         State  Type        Avoid COS O
     3.1.10.121      wss-bpxc    10.1.10.122     Down   cbr                0  L
     
    Last Command: dncon 3.1.10.121
    

    3810-A
    wss-3810a# deb serial interface
    Serial2: HDLC myseq 1, mineseen 1*, yourseen 16, line up 
    Serial2: HDLC myseq 2, mineseen 2*, yourseen 17, line up 
    Serial2: HDLC myseq 3, mineseen 3*, yourseen 18, line up 
    Serial2: HDLC myseq 4, mineseen 4*, yourseen 19, line up 
    Serial2: HDLC myseq 5, mineseen 5*, yourseen 20, line up 
    Serial2: HDLC myseq 6, mineseen 6*, yourseen 21, line up 
    Serial2: HDLC myseq 7, mineseen 7*, yourseen 22, line up 
    
    /** Connection downed at this point **/
    
    Serial2: HDLC myseq 8, mineseen 8*, yourseen 23, line up 
    Serial2: HDLC myseq 9, mineseen 9*, yourseen 24, line up 
    Serial2 - Keepalive time mismatch - should be 10 secs, is 6
    Serial2: HDLC myseq 10, mineseen 24*, yourseen 10, line up (looped)
    Serial2: HDLC myseq 11, mineseen 10*, yourseen 11, line up (looped)
    
    wss-mgxb.1.10.CESM.a > clrchancnts
    wss-mgxb.1.10.CESM.a > clrsarcnts
    wss-mgxb.1.10.CESM.a > dspchancnt 121
    
    ChanNum:                   121
    Chan State:                alarm
    Chan RCV ATM State:        Normal
    Chan XMT ATM State:        Normal
    Cell Loss Status:          Cell Loss
    Reassembled Cells:         0
    Generated Cells:           38019
    Header Errors:             0
    Seqence Mismatches :       0
    Lost Cells:                0
    Channel Uptime (secs.)     356
    Signalling Status          Offhook
     
    wss-mgxb.1.10.CESM.a > dspsarcnt 121
                              SarShelfNum:         1
                              SarSlotNum:          10
                              SarChanNum:          121
                                    Tx                      Rx
                              ---------------       ---------------
      Total Cells:            80725                 0
      Total CellsCLP:         0                     0
      Total CellsAIS:         0                     0
      Total CellsFERF:        0                     0
      Total CellsEnd2EndLpBk: 0                     0
      Total CellsSegmentLpBk: 0                     0
      RcvCellsDiscOAM:                              0

    3810-C
    wss-3810c# deb serial interface
    Serial2: HDLC myseq 16, mineseen 16*, yourseen 2, line up 
    Serial2: HDLC myseq 17, mineseen 17*, yourseen 3, line up 
    Serial2: HDLC myseq 18, mineseen 18*, yourseen 4, line up 
    Serial2: HDLC myseq 19, mineseen 19*, yourseen 5, line up 
    Serial2: HDLC myseq 20, mineseen 20*, yourseen 6, line up 
    Serial2: HDLC myseq 21, mineseen 21*, yourseen 7, line up 
    Serial2: HDLC myseq 22, mineseen 22*, yourseen 8, line up 
    
    /** Connection downed at this point **/
    
    Serial2: HDLC myseq 23, mineseen 23*, yourseen 9, line up 
    Serial2: HDLC myseq 24, mineseen 23, yourseen 9, line up 
    Serial2 - Keepalive time mismatch - should be 10 secs, is 13
    Serial2: HDLC myseq 25, mineseen 9*, yourseen 25, line up (looped)
    Serial2: HDLC myseq 26, mineseen 25*, yourseen 26, line up (looped)

  3. MC3810-没有framingOnVcDisconnect的CPE行为

    此配置步骤的输出展示发生什么,如果我们向下了PVC,当端口配置如无特定结构的:

    3810-A
    wss-3810a# deb serial int
    Serial network interface debugging is on
    wss-3810a#
    
    Serial2: HDLC myseq 282, mineseen 282*, yourseen 283, line up 
    Serial2: HDLC myseq 283, mineseen 283*, yourseen 284, line up 
    
    /** Connection downed at this point **/
    
    %CONTROLLER-5-UPDOWN: Controller T1 0, changed state to down
    %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2, changed state to down
    %LINK-3-UPDOWN: Interface Serial2, changed state to down
    
    wss-mgxb.1.10.CESM.a > clrsarcnts
    wss-mgxb.1.10.CESM.a > clrchancnts
    wss-mgxb.1.10.CESM.a > dspchancnt 121
    ChanNum:                   121
    Chan State:                alarm
    Chan RCV ATM State:        Normal
    Chan XMT ATM State:        Normal
    Cell Loss Status:          Cell Loss
    Reassembled Cells:         0
    Generated Cells:           25782
    Header Errors:             0
    Seqence Mismatches :       0
    Lost Cells:                0
    Channel Uptime (secs.)     3221
    Signalling Status          Offhook
     
    wss-mgxb.1.10.CESM.a > dspsarcnt 121
                              SarShelfNum:         1
                              SarSlotNum:          10
                              SarChanNum:          121
                                    Tx                      Rx
                              ---------------       ---------------
      Total Cells:            70951                 0
      Total CellsCLP:         0                     0
      Total CellsAIS:         0                     0
      Total CellsFERF:        0                     0
      Total CellsEnd2EndLpBk: 0                     0
      Total CellsSegmentLpBk: 0                     0
      RcvCellsDiscOAM:                              0

    3810-C
    wss-3810c# deb serial int
    Serial network interface debugging is on
    wss-3810c#
    Serial2: HDLC myseq 283, mineseen 283*, yourseen 283, line up 
    %CONTROLLER-5-UPDOWN: Controller T1 0, changed state to down
    
    /** Connection downed at this point **/
                              
    %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2, changed state to down
    %LINK-3-UPDOWN: Interface Serial2, changed state to down

命令列表

此部分列出命令,当可用的选项和值,用于在此中的配置示例文档。

addln line_num,…

  • line_num可以是在范围的一个数值从1到8。

cnfln line_num line_code line_len clk_src [E1-signaling],…

  • line_num可以是在范围的一个数值从1到8。

  • line_code可以是:

    • 2 = B8ZS (T1)

    • 3 = HDB3 (E1)

    • 4 = AMI (T1/E1)

  • line_len (线长)可以是:

    • 8 = E1用SMB线路模块

    • 9 = E1用RJ48线路模块

    • 10 = T1 0到131英尺线路扩展

    • 11 = T1 131到262英尺。

    • 12 = T1 262到393英尺。

    • 13 = T1 393到524英尺。

    • 14 = T1 524到655英尺。

    • 15 = T1 > 655英尺。

  • clk_src (时钟源)可以是:

    • 1 =环路时钟;在接口的传输时钟锁定对从连接的设备的接收时钟。

    • 2 =本地时钟;CESM-8卡用途计时从背板派生驱动传输时钟。

  • E1-signaling可以是:

    • CAS =随路信令;信令信息在时隙16包含,并且帧是输入的时隙0。

    • 与循环冗余冗余校验(CRC)的CAS_CRC = CAS。

    • CCS = Common Channel Signaling;信令信息没有附加对一个特定时隙。帧仍然输入第一个时隙。

    • 与CRC的CCS_CRC = CCS。

    • 结算=没有尝试做识别帧或信令在流入数据流。整个数据流认为数据。

addport port_num line_num begin_slot num_slot port_type,…

  • port_num可以是:

    • 在从1个to192 = T1 (8条线路的范围* 24 DS0s/line)

    • 在从1的范围到248 = E1 (8条线路* 31 DS0s/line)

  • line_num可以是从1的一个数值到8。

  • begin_slot是在启动端口的线路的开始时间slot。

  • num_slot是DS0时间间隙数量分配到端口。

  • port_type可以是:

    • 1 =构造

      对于T1,您能设置范围自1的带宽的一种结构化端口类型到24 Ds0s。

      对于E1,结构化端口不能包括成帧时隙(CCS或CAS),或者信令时隙(CAS)。

    • 2 =无特定结构的

      T1,非结构化端口= 24 Ds0s。

      对于E1,当E1发信号设置清除时,非结构化端口可能只配置。

    • 3 = framingOnVcDisconnect

      此端口类型基本上是相同的象无特定结构的与一关键区别—,当非结构化端口体验网络侧信元丢失时, CESM-8传送有条件的数据在线路下。使用framingOnVcDisconnect,从网络端的信元丢失导致接收的CESM-8环回数据从CPE取消端口,以便CPE不丢失帧。在DS0计数和信令类型的同样限制现在为非结构化端口适用此处。

addchan chan_num port_num CesCas partial_fill cond_data cond_signaling,…

  • chan_num可以是在范围的一个数值从32到279。

  • port_num可以是:

    • 在从1个to192 = T1 (8条线路的范围* 24 DS0s/line)

    • 在从1的范围到248 = E1 (8条线路* 31 DS0s/line)

  • CesCas可以是:

    • 1 =基本;CES交互作用功能不认可特殊传输的信令信息在间网络。

    • 2 = e1Cas;恢复传输的E1随路信令(CAS)。

    • 3 = ds1SfCas;从超帧结构(ABAB)恢复T1随路信令。

    • 4 = ds1EsfCas;从扩展的超帧结构(ABCD)恢复T1 CAS。

  • partial_fill可以是0 (零)或从20的一个值到47 :

    • 0或47 =充分地填装

    • 在从20的范围到47 = E1构造了

    • 在从25的范围到47 = T1构造了

    • 在从33的范围到47 =无特定结构的T1/E1

  • cond_data可以是:

    • 0到255 =结构化数据传输(SDT)

    • 255 =非结构化数据传输(UDT)

  • cond_signaling是4位ABCD比特模式的十进制表示法,在从0的范围到15,其中…

    • 0 = 0000二进制

    • 1十进制= 0001二进制

    • 8十进制= 1000二进制

    • 15十进制= 1111二进制

cnfchan chan_num CDV CLIP bufsize clockmode IdleDetEnable ExtIStrig,…

  • chan_num可以是在范围的一个数值从32到279。

  • CDV (信元延迟变化)可以是:

    • 在从1000的范围到24000微秒钟, T1的(增量125)。

    • 在从1000 to32000微秒钟的范围, E1的(增量125)。

  • CLIP (信元丢失综合周期)可以是在范围的一个值从1000到65535毫秒。

  • bufsize (输出缓冲区大小,在字节)可以是:

    • 0 =自动计算缓冲区大小(一定是足够大保持8 SAR-PDUs)。

    • 最小缓冲区大小= 384个字节(8信元有效载荷到一个完整顺序数字周期)。

    • 最大缓冲区空间= 9216 T1的构造了;16384其他的。

  • clockmode可以是:

    • 1 =同步(UDT/SDT)

    • 2 = SRTS (UDT)

    • 3 =可适应(UDT)

  • IdleDetEnable可以是:

    • 1 =禁用

    • 2 = Enable (event)

  • ExtIStrig可以是:

    • 1 =禁用空闲抑制

    • 2 = Enable (event)空闲抑制

验证

当前没有可用于此配置的验证过程。

故障排除

目前没有针对此配置的故障排除信息。


相关信息


Document ID: 22236