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Agent keeps going inactive / disconnecting
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The fact that it's not sending hops alone also means that something is preventing those from being sent or received. Are you able to run a tracert to the same domains from that server?
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Well, at least we have a lead right.
Now, do you have another server or device you could ping from that is connected to the same network?
Something that's connected to the same switch or router that this server is connected to.
I mention that because sometimes there are multiple switches and/or routers.If you can test pings / tracert from another server/device on the same network, that might give you another lead. If you see all responses, then it leads us back to the server the agent is running on. If there are no responses, it leads us to the switch or router that is upstream possibly blocking ICMP at some level or another.
Properly secured equipment often limits the amount of ICMP traffic to lower the chance of being scanned and other hack attempts or simply to lower resource usage.
Maybe something upstream is simply blocking ICMP when it thinks there's too much traffic coming from something inside or outside the network.
ICMP limiting is a common thing and that could cause you to see results then none after what it deems too much traffic.
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What's interesting and maybe just a coincidence is restarting the agent service seems to fix the problem temporarily. That implies that whatever is upstream is allowing some ICMP traffic and then blocking it.
FYI, the agent uses standard port 80/443, and ICMP. While ICMP is a small part of actually detecting an outage, it's an important part because it's not only part of the heartbeat to know if it is still communicating but also for the agent to send updated hops changes and other tests.
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If your office has a managed services arrangement with an outside company, it might be worth asking them if they have any ICMP (and/or other) limiters put in place. If it's not them and you can't find anything in the building, then it could also be the provider.
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Hi, as an update, 'Back online" email is correct now.
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Good afternoon.....
I believe I've got everything resolved. So, Cisco disables / blocks ICMP traffic by default to any outside interface. Once I allowed ICMP traffic on my firewall / ASA, my "hops" started showing in the history, and tracert to foxymon.com and tpw.outagesio.com (as well as to any other url) were no longer giving a "time out".
Thank you to everyone for the help!
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Hi,
That's great to hear and I now see hops coming in which means everything should work now.
It also means your hardware agent should function perfectly once you receive it. -
That's a bit humorous. We were just sending an email to that agent owner about that then noticed it's the same address.
I've asked our dev to look into this one because now I'm stumped and need more input on why it would see a local outage without ICMP.
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As far as I understand it, that should have created only an Inactive, not an outage. Give us a few minutes to look into this (ID 130432).
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My bad: the time I gave you was MST not UTC so all fine with the 2:25 (almost 2:30) pm
What I think it is happening is that the agent has a wrong date which is kind of weird!!!!
Pings are coming in and hops came in too but with wrong dates
Let me see what I can do
