1079798 - problematic optic on core1.scl3 xe-0/0/3 (or possibly the other side, border1.scl3 xe-0/0/0)

Status: RESOLVED WONTFIX

(Infrastructure & Operations :: DCOps, task)

Description

[Dave Curado :dcurado]

Well, this should be interesting.

We're getting the a slowly increasing number of syslog messages regarding
core1.scl3 xe-0/0/3.

Oct  8 11:22:09 core1.scl3.mozilla.net member0-fpc3  chassism[120]:  link 4 SFP output power high warning cleared
Oct  8 11:22:19 core1.scl3.mozilla.net member0-fpc3  chassism[120]:  link 4 SFP output power high warning set
Oct  8 11:22:54 core1.scl3.mozilla.net member0-fpc3  chassism[120]:  link 4 SFP output power high warning cleared
Oct  8 11:23:04 core1.scl3.mozilla.net member0-fpc3  chassism[120]:  link 4 SFP output power high warning set

This is a critical link.  Let's fix it.
But, it's going to cause a lot of routing instability inside of the SCL3
data center, we need to schedule this change carefully.  Possibly in the
next tree closing window.  It'll be an interesting test actually.

btw - the warning in syslog is about "link 4", but juniper doesn't tell you
what interface that is.  But I learned you can do a: "show interfaces diagnostics optics" and look for an alarm being set to "on"...


Physical interface: xe-0/0/3
    Laser bias current                        :  7.580 mA
    Laser output power                        :  0.5690 mW / -2.45 dBm
    Module temperature                        :  36 degrees C / 98 degrees F
    Module voltage                            :  3.3040 V
    Receiver signal average optical power     :  0.0000 mW / - Inf dBm
    Laser bias current high alarm             :  Off
    Laser bias current low alarm              :  Off
    Laser bias current high warning           :  Off
    Laser bias current low warning            :  Off
    Laser output power high alarm             :  Off
    Laser output power low alarm              :  Off
    Laser output power high warning           :  Off
    Laser output power low warning            :  Off
    Module temperature high alarm             :  Off
    Module temperature low alarm              :  Off
    Module temperature high warning           :  Off
    Module temperature low warning            :  Off
    Module voltage high alarm                 :  Off
    Module voltage low alarm                  :  Off
    Module voltage high warning               :  Off
    Module voltage low warning                :  Off
    Laser rx power high alarm                 :  Off
    Laser rx power low alarm                  :  Off
    Laser rx power high warning               :  On <-----------
    Laser rx power low warning                :  Off
    Laser bias current high alarm threshold   :  11.800 mA
    Laser bias current low alarm threshold    :  4.000 mA
    Laser bias current high warning threshold :  10.800 mA
    Laser bias current low warning threshold  :  5.000 mA
    Laser output power high alarm threshold   :  0.8310 mW / -0.80 dBm
    Laser output power low alarm threshold    :  0.2510 mW / -6.00 dBm
    Laser output power high warning threshold :  0.6600 mW / -1.80 dBm
    Laser output power low warning threshold  :  0.3160 mW / -5.00 dBm
    Module temperature high alarm threshold   :  78 degrees C / 172 degrees F
    Module temperature low alarm threshold    :  -13 degrees C / 9 degrees F
    Module temperature high warning threshold :  73 degrees C / 163 degrees F
    Module temperature low warning threshold  :  -8 degrees C / 18 degrees F
    Module voltage high alarm threshold       :  3.700 V
    Module voltage low alarm threshold        :  2.900 V
    Module voltage high warning threshold     :  3.600 V
    Module voltage low warning threshold      :  3.000 V
    Laser rx power high alarm threshold       :  0.0000 mW / - Inf dBm
    Laser rx power low alarm threshold        :  0.0000 mW / - Inf dBm
    Laser rx power high warning threshold     :  0.0000 mW / - Inf dBm
    Laser rx power low warning threshold      :  0.0000 mW / - Inf dBm