城域网常见故障处理方法

城域网常见故障处理方法目前值班过程中，NOC数据部故障处理班常见故障主要包括：adsl群障，LAN小区群障，MPLS-VPN故障和告警等，现将常见故障的处理办法作简要说明。一．adsl群障adsl用户目前有2种接入方式，IP接入和ATM接入，IP接入的BRAS设备包括ME60,ERX,E320，ATM接入的BRAS有ERX，故有几种不同的故障处理方法。1.IPDSLAM用户通过8512接入ME60的故障处理例：接客服班报石桥铺片区adsl用户报678错误。处理方法：根据报过来的账号，通过亿讯系统查看用户上网记录，发现都是石桥铺ME60上的用户，用户外层VLAN都是112.首先，登陆石桥铺8512，查看VLAN112是从那一个接口接上来的。CQDX-SQP-RPR-S8512-S1disvlan112VLANID:112VLANType:staticRouteInterface:notconfiguredDescription:SQP-RPR-IPDslam(XMZ)-1Name:VLAN0112TaggedPorts:GigabitEthernet1/1/5GigabitEthernet1/1/18UntaggedPorts:none从配置可以看出，VLAN112所在的端口有2个，肯定一个端口为DSLAM接入端口，另一个端口为到ME60的上行端口，查看端口配置，可确定接入端口为那一个。CQDX-SQP-RPR-S8512-S1discurintg1/1/5#interfaceGigabitEthernet1/1/5descriptionSQP-RPR-IPDslam(XMZ)-1speed1000duplexfullportlink-typetrunkundoporttrunkpermitvlan1porttrunkpermitvlan1123006broadcast-suppressionbandwidth50#在接入端口上，可以通过查看端口状态，端口流量和查看该端口是否有用户MAC地址上来，做故障判断。CQDX-SQP-RPR-S8512-S1disintg1/1/5GigabitEthernet1/1/5currentstate:UPIPSendingFrames'FormatisPKTFMT_ETHNT_2,Hardwareaddressis000f-e226-b529Description:SQP-RPR-IPDslam(XMZ)-1TheMaximumTransmitUnitis1500Mediatypeisopticalfiber,loopbacknotsetPorthardwaretypeis1000_BASE_LX_SMF1000Mbps-speedmode,full-duplexmodeLinkspeedtypeisforcelink,linkduplextypeisforcelinkFlow-controlisnotenabledTheMaximumFrameLengthis10240BroadcastMAX-value:50MAllowjumboframetopassPVID:1Link-statusholdinterval:3SecPortlink-type:trunkVLANpassing:112,3006VLANpermitted:112,3006Trunkportencapsulation:IEEE802.1qLast300secondsinput:5618packets/sec16513224bits/sec1%Last300secondsoutput:6101packets/sec36051080bits/sec3%Input(total):110805267793packets,45117659613992bytes-broadcasts,-multicastsInput(normal):110805267646packets,45117659559785bytes198306110broadcasts,49905671multicastsInput:147inputerrors,0runts,0giants,12throttles,1CRC134frame,0overruns,-aborts,0ignored,-parityerrorsOutput(total):122885510555packets,89347714630708bytes-broadcasts,-multicasts,0pausesOutput(normal):122885510555packets,89347714630708bytes40303broadcasts,0multicasts,0pausesOutput:0outputerrors,-underruns,-bufferfailures0aborts,0deferred,-collisions,0latecollisions-lostcarrier,-nocarrierReceivePacketPeakValueInfo:18296928bits/sec,happenedat22:18:496-3-2008TransmitPacketPeakValueInfo:46190088bits/sec,happenedat21:48:436-3-2008若该端口状态DOWN，则问题可能出在光路，尾纤，DSLAM设备，这三种情况比较多，8512端口问题也有可能，但几率比较小。可通过端口自环（同一根光纤的两头插入模块）来检测端口和模块是否正常。若端口状态正常，可通过查看是否有用户MAC地址上来，判断DSLAM到8512是否正常。CQDX-SQP-RPR-S8512-S1displaymac-addressdynamicinterfaceGigabitEthernet1/1/5MACADDRVLANIDSTATEPORTINDEXAGINGTIME(s)0090-d059-a6ae112LearnedGigabitEthernet1/1/5AGING0090-d059-b8e8112LearnedGigabitEthernet1/1/5AGING0090-d059-97f2112LearnedGigabitEthernet1/1/5AGING001f-3348-85c9112LearnedGigabitEthernet1/1/5AGING0090-d07b-888c112LearnedGigabitEthernet1/1/5AGING4499-3256-802a112LearnedGigabitEthernet1/1/5AGING若在8512设备上能收到用户的MAC地址，我们再到ME60上查看该VLAN是否有用户上线。首先要查找到用户所拨到的ME60端口，可通过查看亿讯记录或在8512上displayvlan112查看上行端口。在ME60上，正常的显示状态如下：[ShiQiaoPu-ME60-1]displayaccess-userinterfaceGigabitEthernet2/0/3.1qinq112--------------------------------------------------------------------------UserIDUsernameInterfaceIPaddressMAC--------------------------------------------------------------------------58adsl305381598GE2/0/3.1125.85.157.190001e-8c90-ee58835adsl305524985GE2/0/3.1125.85.154.2540011-090a-0bef963adsl302381943GE2/0/3.1125.85.131.8300e0-4d27-f8371525adsl305136714GE2/0/3.1125.85.131.48001a-92db-4cbd1527adsl302374047GE2/0/3.1125.85.128.1690019-e0bd-c85d1742adsl302174623GE2/0/3.1125.85.149.9800e0-11a0-1de32077adsl305441143GE2/0/3.1125.85.140.1590810-174a-620b2401adsl302817451GE2/0/3.1125.85.154.137001d-7d2d-25a53041adsl302969193GE2/0/3.1125.85.143.25000b0-2c07-4f243355adsl302814727GE2/0/3.1125.85.157.1310021-2731-f0ef4512adsl305120423GE2/0/3.1125.85.141.123000d-876c-b58bShiQiaoPu-ME60-1displayinterfaceGigabitEthernet2/0/3GigabitEthernet2/0/3currentstate:UPLineprotocolcurrentstate:DOWNDescription:To_[8512-sqp-1-163]GE_1/1/18,RoutePortTheMaximumTransmitUnitis1500bytesInternetprotocolprocessing:disabledIPSendingFrames'FormatisPKTFMT_ETHNT_2,Hardwareaddressis0018-8222-4d2dtheVendorPNisTRPAG1LXDBBS-HWSPortBW:1G,TransceivermaxBW:1G,TransceiverModes:SingleModeWaveLength:1310nm,TransmissionDistance:10kmLoopback:none,full-duplexmode,negotiation:disableStatisticslastcleared:neverLast5minutesinputrate:49303944bits/sec,15697Packets/secLast5minutesoutputrate:99290848bits/sec,17604Packets/secInput:22170130625504Bytes,53883524971PacketsOutput:41038411398579Bytes,58962682669PacketsInput:Unicast:53735140438,Multicast:4166630Broadcast:144217903,JumboOctets:312334038CRC:0,Symbol:0Overrun:2264,InRangeLength:0LongPacket:0,Jabber:0,Alignment:0Fragment:0,UndersizedFrame:0RxPause:0Output:Unicast:58962682606,Multicast:63Broadcast:0,JumboOctets:2841312887Lost:0,Overflow:0,Underrun:0TxPause:63如在ME60上能看到有该VLAN的用户在线，则可判定我方设备正常，非群障，故障点可能在DSLAM上，请分公司检查DSLAM设备即可。若在8512上端口DOWN或无法收到用户的MAC地址上来，就没有必要再到ME60上确认了。直接告知分公司具体情况，让分公司处理接入端问题。DSLAM到8512接入端为分公司维护范围。另外种情况，故障DSLAM不是直接接入石桥铺8512上的ME60，而是通过环网另外的8512透传过来的，则需要到该环网