<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">To all the crazy ones, all the gurus:<div class=""><br class=""></div><div class=""><b class="">TLDR: FreeSWITCH Server looses connectivity with main router (gateway), can ping any other server but cannot reach router.</b></div><div class=""><br class=""></div><div class="">We have a cluster of FreeSWITCH servers running behind Kamailio.</div><div class=""><br class=""></div><div class="">For 3 years we have been up and running smoothly without any glitches.</div><div class=""><br class=""></div><div class="">Last week we upgraded our FreeSWITCH servers, the upgrade included:</div><div class=""><br class=""></div><div class="">1) Upgraded Debian Squeeze to Ubuntu LTS 14.04</div><div class=""><br class=""></div><div class="">2) Upgraded FreeSWITCH from version 1.2 to 1.4.18 (git: 4eed221)</div><div class=""><br class=""></div><div class="">Ever since last week, a very strange problem happened 3 times. The FreeSWITCH servers randomly loose connectivity with our main router (gateway).</div><div class=""><br class=""></div><div class="">FS servers can be reached and pinged from the rest of servers, they also can ping and reach all other servers but when we ping router from inside FS servers they cannot ping and reach the router.</div><div class=""><br class=""></div><div class="">The only way we can get them working again is by:</div><div class=""><br class=""></div><div class=""><font face="Courier New" class=""><b class="">ifconfig eth1 down</b></font></div><div class=""><font face="Courier New" class=""><b class="">sleep 3</b></font></div><div class=""><font face="Courier New" class=""><b class="">ifconfig eth1 up</b></font></div><div class=""><font face="Courier New" class=""><b class="">route add default gw 208.65.xxx.xxx eth1</b></font></div><div class=""><br class=""></div><div class="">The rest of our 20 servers are all running Ubuntu 14.04 and most of them are under heavy load, this only happens with FS servers.</div><div class=""><br class=""></div><div class="">Does any one have any clue about this bizarre situation? Any one know under what circumstances a server might loose connectivity and routing to its gateway?</div><div class=""><br class=""></div><div class="">Any pointer for debugging or suggestion is highly appreciated.</div><div class=""><br class=""></div><div class="">Thank you,</div><div class=""><br class=""></div><div class="">Moe</div><div class=""><br class=""></div></body></html>