Is there any other infromation other than "Port 1 link down - Local fault" available to troublshoot intermittant issue?

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  • Updated 6 months ago
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Switch 1 -
  • X670G2-48x-4q      Created by ExtremeXOS version 15.6.4.2
  • Port      Temp    TxPower  RxPower  TxBiasCurrent  Voltage-Aux1/ Voltage-Aux2
           (Celsius)   (dBm)    (dBm)     (mA)         Vcc (Volts)       (Volts)
    ================================================================================
    1         28.96    -2.06    -8.27     30.30         3.24          N/A          
    ================================================================================
          N/A - parameter not applicable to transceiver connected to the port
          *   - value is out of normal range
  • 01/30/2018 10:54:55.12 <Info:vlan.msgs.portLinkStateUp> Port 1 link UP at speed 10 Gbps and full-duplex
    01/30/2018 10:54:53.64 <Info:vlan.msgs.portLinkStateDown> Port 1 link down - Local fault
    01/30/2018 10:54:52.59 <Info:vlan.msgs.portLinkStateUp> Port 1 link UP at speed 10 Gbps and full-duplex
    01/30/2018 10:54:50.77 <Info:vlan.msgs.portLinkStateDown> Port 1 link down - Local fault
Switch 2-
  • X440-24t-10G   Created by ExtremeXOS version 15.7.1.4
  • Port      Temp    TxPower  RxPower  TxBiasCurrent  Voltage-Aux1/ Voltage-Aux2
           (Celsius)   (dBm)    (dBm)     (mA)         Vcc (Volts)       (Volts)
    ================================================================================
    26        35.84    -1.56    -5.57     36.75         3.19          N/A          
    ================================================================================
          N/A - parameter not applicable to transceiver connected to the port
          *   - value is out of normal range
  • 01/30/2018 10:54:53.93 <Info:vlan.msgs.portLinkStateUp> Port 26 link UP at speed 10 Gbps and full-duplex
    01/30/2018 10:54:53.84 <Info:vlan.msgs.portLinkStateDown> Port 26 link down - remote fault
    01/30/2018 10:54:47.49 <Info:vlan.msgs.portLinkStateUp> Port 26 link UP at speed 10 Gbps and full-duplex
    01/30/2018 10:54:47.42 <Info:vlan.msgs.portLinkStateDown> Port 26 link down - remote fault
Is there any other information which I can help use to troubleshoot this issue?   It started 1/26/2018 about 6 hours after  a power event (01/20/2018 08:07:49.55 <Warn:EPM.UnexpctRebootDtect> Booting after System Failure.).

I have already swapped optics and will be heading 2 hours to the site to swap ports.

Any additional insight would REALLY be appreciated.
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Joe Sheldon.

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Posted 6 months ago

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EtherMAN, Embassador

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I would question why you have almost a 3 db difference in light levels on such a short run... Was that extra loss there before the port flaps?  If not then you may have a bend in a splice case somewhere or a patch problem... maybe it not seated in frame on back side ... As a rule we try to keep under 2 db difference in fiber loss on ten gig links.  Longer links we are more flexible but a short link the fibers should have very close to the same loss... 
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Joe Sheldon.

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The link is approx 4 miles and the customer has moved our gear. They are using a multi mode patch cable on the single mode link. While this is wrong and being corrected today, the link was working over it until recently.
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Bin, Employee

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Hi Joe,

Please check these articles 

1.
link down - Local Fault

2.
EXOS Local Fault Issue with Direct-Attach Cables


If none of these articles could not help you, I suggest you to open case to our GTAC 
https://gtacknowledge.extremenetworks.com/articles/How_To/Create-a-Case-via-New-Portal



Best regards,