setup an mtr and let it run, watch for packet loss... i had such behaviour too and it was sourced by an improper routing setup from the ISP
2012/7/22 Seth Mos <[email protected]> > Remember that your isp can have routing issues too. > > Im afraid this is not limited to pfsense. Ive had my shares of weird > routing glitches where a upstream bgp router lost significant parts of the > internet. > > This is not something ypu could work around short of having your own bgp > router with multiple feeds in house. > > Regards seth > > > Gavin Will <[email protected]>schreef: > > >Hi > > > >Our PF Sense 2.0.1 box has been super reliable for months and there > hasn't been any change in config for quite a while. > > > >On the weekend though I got Nagios emails saying that remote hosts at > satellite sites were down. Initially it looked like the whole internet at > the main site was down for a couple of minutes and recovered but under > investigation this is not the case. > > > >Strange thing is that some hosts appear down but others are not at the > remote sites. For example I can ping an esxi box on the remote site but not > a separate box or a VM running on the Esxi box. > > > >This happens to all remote sites at the same time. Some sites use > openvpn and some are ipsec so not an issue specifically with one of the VPN > services. > > > >Nagios also monitors a public website. It said it was down and when > remoted in to my work PC I could not gain access to the site or ping it > however on my local computer at home the site was up and responded to a > ping External monitoring service also said the site was up. Since I was > remoted in to my PC Internet was clearly working but couldn't ping remote > sites or visit this public website but could google and browse other sites. > > > >Initially thought this was possibly arp poisioning but no logs to show > that. The logs don't show much but I suspect they are currently not verbose > enough. > > > >This has now happened twice in a 24hour period with routing very unstable > for approx 30 minutes and then comes back and all is working, > > > >Any Ideas? How would I best troubleshoot / diagnose this? > > > >Cheers > > > >_______________________________________________ > >List mailing list > >[email protected] > >http://lists.pfsense.org/mailman/listinfo/list > _______________________________________________ > List mailing list > [email protected] > http://lists.pfsense.org/mailman/listinfo/list > -- = = = http://michael-schuh.net/ = = = Projektmanagement - IT-Consulting - Professional Services IT Michael Schuh Postfach 10 21 52 66021 Saarbrücken phone: 0681/8319664 mobil: 0175/5616453 @: m i c h a e l . s c h u h @ g m a i l . c o m = = = Ust-ID: DE251072318 = = =
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