[Xymon] flapping status

[Phil Crooker]

This could be a number of things. The obvious question is what has changed (that you can see)? Any new routers, changes to the VPN setup? What tests are showing red/flapping? Are all tests for these affected hosts red/flapping? You say it is only those systems with a private network, do you have others that aren't a private network through the same VPN that are OK? What is happening at the VPN gateways at each end, can you run tcpdump on these systems to find any patterns? If tests are flapping, that means some packets are getting through, you should be able to see this on the gateways.


hope this helps, Phil


________________________________
From: Xymon <xymon-bounces at xymon.com> on behalf of Metron 6 (six) <metron6 at gmail.com>
Sent: Sunday, 30 July 2017 2:03 AM
To: xymon at xymon.com
Subject: [Xymon] flapping status

hello all,
the last 4-5 days, i have a major problem with my xymon server.
I run it for several years, monitoring connectivity on misc servers on my local network.
Xymon server is connected to my local network via a VPN, and it seems that the problem is with the computers that have a private ip (10.xx.xx.xx).

when i restart xymon, everything seems ok for a few minutes.
after this, all become red and i have a "flapping status" warning.

i tried to change values in tasks.cfg with no result.
i unistalled/installed xymon, with no result.
my configuration is very close to the default, except hosts.cfg of course.
i tried to ping for hours a host on my localnet, from xymon server, successfully, with no packet lost..

can anyone help me with this ?


--

regards,
Metron 6 (six)

Metron6 at gmail.com<mailto:Metron6 at gmail.com>

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