[Lerftest-ctrls] Issue with LLRF-CPU networking

[Slepicka, Hugo Henrique]

Hi,

I personally never saw this behavior.
Looping Ernest and Thuy too so they can also contribute on this case.

*Larry and Sonya*:
- Is this also happening to the other CPU?
- Can you send the output of ifconfig -a before the issue and after it happens?
- Was any board added to the cpu?

Thank you,
Hugo


On 9/12/18, 1:23 PM, "Lerftest-ctrls on behalf of Sonya Hoobler" <lerftest-ctrls-bounces at jlab.org on behalf of sonya at slac.stanford.edu> wrote:

    Hi again,
    
    Larry called and repoted that the interface seemed to be down again and, 
    indeed, eth0 no longer appeared in ifconfig.
    
    *Larry*, do you know if anything was power-cycled or disconnected before 
    you found the problem? That info would help for our troubleshooting.
    
    *Hugo*, have you encountered this before? This is not the first time I've 
    found eth0 missing for these systems, but since I'm remote and not fully 
    aware of what is happening locally, I have not yet tried to troubleshoot 
    it.
    
    Thanks everyone,
       Sonya
    
    
    
    On Wed, 12 Sep 2018, Sonya Hoobler wrote:
    
    > Hi Wesley,
    >
    > The ifconfig eth0 was not set (which is odd but I believe I have seen this 
    > before). I have set it and it should be working now.
    >
    > Sonya
    >
    >
    > On Wed, 12 Sep 2018, Wesley Moore wrote:
    >
    >> Sonya,
    >> 
    >> 
    >> Larry is seeing a comm issue from lcls-llrfcpu01 to the rack's switch. 
    >> Port 1 on the cpu appears inactive/dead (pic 1).  This results in the 
    >> uplink in the rack being down (pic 2).  Larry moved from Port 1 to another 
    >> port up and saw the uplink briefly.  So it's believed that everything 
    >> downstream of cpu01 is fine.  Please advise.
    >> 
    >> 
    >> # pic 1: lcls-llrfcpu01, port 1 inactive.
    >> 
    >> [cid:1ffd57f5-4469-41d5-885a-0ba16ff448a9]
    >> 
    >> 
    >> # pic 2: LLRF rack switch, all lights on left are solid, uplink on 
    >> far-right is inactive.
    >> 
    >> [cid:7cd84393-99e7-4dab-a88d-8bedc95f7115]
    >> 
    >> 
    >> Wesley
    >> 
    >
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