Installation Manual

IBRInstallationGuide
 Page30of40 Doc#770‐00001‐13
 Sept.21,2014
Appendix A: Troubleshooting Guide

NOTE:TheseprocedureshavebeendevelopedbyFastbackNetworkstoassistafieldengineerin
troubleshootinganIBRthatdoesnotappeartobeworkingproperly.Theseproceduresarenotintended
toreplaceorsupersedeacompany’sstandardproceduresforoperatingandtroubleshootingnetwork
devices.
ThisTroubleshootingGuideisorganizedbysymptomsthatanoperatormightobservethatsuggestthatIBRis
notoperatingproperly.
A1. IBRRebootsDuringtheBootProcess
IfIBRisrepeatedlyrebootingduringthebootprocessanddisplayingthefollowingmessage:
Message:“UncompressingLinux…done,bootingthekernel”.
Trythefollowing:ReplacethePoE
+
injectorandtrybootingtheIBRagain.ItmightbethatthePoE
+
power
sourceisnotprovidingsufficientpowertoIBR.IBRrequiresatleast35watts.
A2. IBRsCannotEstablishALink
BothIBRsonthelinkappeartobeworkingproperly,butcannotestablishalink.
2.1. TurnTransmittersON
TurnbothtransmittersONusingthefollowingprocedure:
a. CheckthestatusofthelinkwiththefollowingCLIcommand(whereIBR101isshownasthehost
name):
IBR101#showinterfaceradio0status
b. ThestatusreportthatisdisplayedshouldstatethatIBRisUPandtheTransmitterisON.
Status:UP,0d2h44m52s,TransmitterisON
c. IftheTransmitterisOFF,turnitonwiththefollowingCLIcommands:
IBR101#configureterminal
IBR101(config)#interfacesradio0
IBR101(config‐rad‐0)#txon
d. VerifythatthetransmitterisON:
IBR101(config‐rad‐0)#do
showinterfaceradio0status
e. IfthetransmitterstillisnotON,reboottheIBR:
IBR101(config‐rad‐0)#doreload
f. WhentheunitisbackuprepeatthesequenceabovetoturnONthetransmitter.Ifthetransmitterstill
innotON,escalatetheproblemtothenexthighersupportlevel.
2.2. CheckIBRCompatibility
WhenbothtransmittersareconfirmedtobeON,verifythattheirrespectivetransmitandreceivefrequencies
mirrored;thatis,thatthereceivefrequencyofeachIBRisthesameasthetransmitfrequencyoftheother
IBR.Thefollowingaresampleradiostatusoutputs:
5.8IBRFrequencyandBandwidth:
TX:5800MHzRX:5300MHz