案例-传输光衰过大导致上传速率不达标
传输光衰过大导致上传速率不达标【摘 要】在日常测试单验过程中,发现一个站点上传异常,该站点下载等其他业务正常,在后台的配合分析过程中,定位为该站因传输光衰异常导致。【关键字】上传异常 传输光衰【故障现象】:现场对临泉鲖城站点上传下载业务测试过程中,发现下载速率正常,满调度,SINR等能达到好点要求。在相同位置做上传业务RSRP良好,SINR良好,后台跟踪干扰检测均在-100以下,RSSI输出在加载和不加载的情况下均正常,但是调度较差,导致上传速率持续较低(基本在10MBPS以下)。【原因分析】现场主要进行如下几个方面的排查。1.上传速率较低可能与服务器有关,尝试更换服务器后做上传业务,发现速率没改善,和更换前服务器前一样,上传速率较低,尝试在该站点各个扇区做上传,情况相同,上传低的情况没改善。继续用原服务器换个另外一个站址进行上传业务能够达标,排除服务器问题。2.异常点SINR值较高,达到30左右,可见下行无线环境较好,同时后台跟踪干扰检测、小区内用户是否接入过多、RSSI检测,检查结果为以上各项均正常。排除基站无线设备和频率干扰等原因。3.联系后台检查是否有告警,后台反映该站点不存在告警,排除无线硬件故障。4.传输因素会影响上传下载业务的性能,需要对该基站进行PING大包测试(大包1500KBYTE),发现丢包现象严重,结合以往项目经验,定位于传输问题。需要传输侧配合排查传输是否有光路不正常(如光衰过大导致)。传输人员配合光路排障后到原站址进行上传业务,速率正常了。【解决方法】:出现上传异常现象,现场人员一般从服务器异常、SINR值异常、告警、小区接入用户数、调度情况等等入手处理。后台人员可以通过PING测试,判断下该站点的传输情况。具体执行步骤如下1.首先查询该基站源IP和目标IP,命令为:LST SCTPLNK详情如下图:2.使用MML进行PING测试(大包1500KBYTE),具体操作如下:选取距离FY-临泉-鲖城HFBBU00-436724较近的站点FY-临泉-鲖城二站-HFTA-436733的做为ping测试,如下:网管提取FY-临泉-鲖城二站-HFTA-436733的本端地址如下:FY-临泉-鲖城HFBBU00-436724较近的站点FY-临泉-鲖城二站-HFTA-436733的ping测试操作3.命令执行结果如下:PING:SN=7,SRCIP="7.184.19.118",DSTIP="7.184.19.90",PKTSIZE=1500,CONTPING=DISABLE,NUM=100,APPTIF=NO;FY-临泉-鲖城HFBBU00-436724 PING 7.184.19.90: 1500 data bytes Reply from 7.184.19.90: bytes=1500 Sequence=1 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=2 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=3 ttl=254 time=3 ms Reply from 7.184.19.90: bytes=1500 Sequence=4 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=5 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=6 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=7 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=8 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=9 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=10 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=11 ttl=254 time=3 ms Reply from 7.184.19.90: bytes=1500 Sequence=12 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=13 ttl=254 time=2 ms Request time out Reply from 7.184.19.90: bytes=1500 Sequence=15 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=16 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=17 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=18 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=19 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=20 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=21 ttl=254 time=2 ms Request time out Reply from 7.184.19.90: bytes=1500 Sequence=23 ttl=254 time=2 ms Request time out Reply from 7.184.19.90: bytes=1500 Sequence=25 ttl=254 time=2 ms Request time out Reply from 7.184.19.90: bytes=1500 Sequence=27 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=28 ttl=254 time=2 ms Request time out Reply from 7.184.19.90: bytes=1500 Sequence=30 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=31 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=32 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=33 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=34 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=35 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=36 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=37 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=38 ttl=254 time=2 ms Request time out Reply from 7.184.19.90: bytes=1500 Sequence=40 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=41 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=42 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=43 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=44 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=45 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=46 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=47 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=48 ttl=254 time=1 ms Reply from 7.184.19.90: bytes=1500 Sequence=49 ttl=254 time=3 ms Reply from 7.184.19.90: bytes=1500 Sequence=50 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=51 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=52 ttl=254 time=2 ms Request time out Reply from 7.184.19.90: bytes=1500 Sequence=54 ttl=254 time=1 ms Reply from 7.184.19.90: bytes=1500 Sequence=55 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=56 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=57 ttl=254 time=2 ms Request time out Reply from 7.184.19.90: bytes=1500 Sequence=59 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=60 ttl=254 time=2 ms Reply from 7.184.19.90: bytes=1500 Sequence=61 ttl=254 time