[Check_mk (english)] Check_MK 0 values and long execution time for stacked Juniper EX2200 switches

Hi William,

The first steps should be running the inventory from the command line and also the check to see which part takes so long.

cmk --debug -vv -II hostname
and
cmk --debug -vv -n hostname

Now you can see where the switch takes so long to answer. Beside this you have all the executed snmpwalk commands to check by yourself the single steps.

Best regards
Andreas

···

William willay@gmail.com schrieb am Mo., 8. Juni 2015 10:56:

Morning list,

I’m running OMD with Check_MK 1.2.4p5, currently monitoring over 100 hosts without an issue until last week when we brought up 3 pairs of stacked Juniper EX2200 switches, when monitoring these switches using check_mk I suffer from timeouts, bandwidth values being returned as 0 and very long inventory times (approx 260 seconds) when doing a Live Scan.

I have standalone Juniper EX2200s which have no issues with being monitored, along with various bits of network equipment.

I have already gone down the route of contacting Juniper and they are unable to find anything wrong with my switch configuration and nothing has come up when checking their bug lists, the stacks vary from 2 members to 4, the smallest stacks consist of 96~ ports however I have other switch stacks which do not experience the same issue (2x Juniper 4200 48p for example).

What would be the best way to troubleshoot this issue from my check_mk server? I’d appreciate any help on the matter.

Kind Regards,

William


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