Hello, I'm remotely managing an asterisk setup using an OpenVPN client on this Asterisk box, connecting to an OpenVPN server of mine). This box is mainly connected to PSTN. It is also connected to the Internet, only for remote management. The former ADSL link has recently been replaced by a new 4G link (UMTS). I'm connecting to this box from a Debian Jessie/Gnome Terminal combo. With this new link, whenever I launch a vim, a nano or a rasterisk session, my terminal freezes (rasterisk) or remains empty (nano, vim). When a session is frozon, I can open a new one at the same so it excludes a basic connectivity loss. What would you suggest ? Best regards PS: I was about to determine best MTU value but I always thought a punishment for a bad MTU value would be a lower throughput, not a screen freeze. Is it correct ? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20160303/6deb377e/attachment.html>
Please set correct MTU at server side, it is definitely an MTU issue. Sent from my iPhone> On Mar 3, 2016, at 5:31 PM, Olivier <oza.4h07 at gmail.com> wrote: > > Hello, > > I'm remotely managing an asterisk setup using an OpenVPN client on this Asterisk box, connecting to an OpenVPN server of mine). > > This box is mainly connected to PSTN. > It is also connected to the Internet, only for remote management. > > The former ADSL link has recently been replaced by a new 4G link (UMTS). > > I'm connecting to this box from a Debian Jessie/Gnome Terminal combo. > > With this new link, whenever I launch a vim, a nano or a rasterisk session, my terminal freezes (rasterisk) or remains empty (nano, vim). > > When a session is frozon, I can open a new one at the same so it excludes a basic connectivity loss. > > What would you suggest ? > > Best regards > > > PS: I was about to determine best MTU value but I always thought a punishment for a bad MTU value would be a lower throughput, not a screen freeze. Is it correct ? > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users
> On 4/03/2016, at 5:31 AM, Olivier <oza.4h07 at gmail.com> wrote: > > Hello, > > I'm remotely managing an asterisk setup using an OpenVPN client on this Asterisk box, connecting to an OpenVPN server of mine). > > This box is mainly connected to PSTN. > It is also connected to the Internet, only for remote management. > > The former ADSL link has recently been replaced by a new 4G link (UMTS). > > I'm connecting to this box from a Debian Jessie/Gnome Terminal combo. > > With this new link, whenever I launch a vim, a nano or a rasterisk session, my terminal freezes (rasterisk) or remains empty (nano, vim). > > When a session is frozon, I can open a new one at the same so it excludes a basic connectivity loss. >Usually incorrect MTU gives you this effect. Use ping with MTU size set to test and find what works. You will probably also break it with any large text dump eg cat /var/log/syslog will also do it> What would you suggest ? > > Best regards > > > PS: I was about to determine best MTU value but I always thought a punishment for a bad MTU value would be a lower throughput, not a screen freeze. Is it correct ? > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users
2016-03-03 18:08 GMT+01:00 Duncan Turnbull <duncan at e-simple.co.nz>:> > > On 4/03/2016, at 5:31 AM, Olivier <oza.4h07 at gmail.com> wrote: > > > > Hello, > > > > I'm remotely managing an asterisk setup using an OpenVPN client on this > Asterisk box, connecting to an OpenVPN server of mine). > > > > This box is mainly connected to PSTN. > > It is also connected to the Internet, only for remote management. > > > > The former ADSL link has recently been replaced by a new 4G link (UMTS). > > > > I'm connecting to this box from a Debian Jessie/Gnome Terminal combo. > > > > With this new link, whenever I launch a vim, a nano or a rasterisk > session, my terminal freezes (rasterisk) or remains empty (nano, vim). > > > > When a session is frozon, I can open a new one at the same so it > excludes a basic connectivity loss. > > > Usually incorrect MTU gives you this effect. Use ping with MTU size set to > test and find what works. >I think its value: it's 1272, which amazes me.> > You will probably also break it with any large text dump eg cat > /var/log/syslog will also do it >Yes "cat /var/log/syslog" also broke my console. Why would my console break because of inadequate MTU and other PC on the same location, seem unaffected ? Because, they most probably mostly use SMTP and HTTP ? Is possible to simulate a given MTU on a LAN to reproduce such freezes ? (the remote location is at the other side of the country and I would like to prepare things as much as possible).> > What would you suggest ? > > > > Best regards > > > > > > PS: I was about to determine best MTU value but I always thought a > punishment for a bad MTU value would be a lower throughput, not a screen > freeze. Is it correct ? > > -- > > _____________________________________________________________________ > > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > New to Asterisk? Join us for a live introductory webinar every Thurs: > > http://www.asterisk.org/hello > > > > asterisk-users mailing list > > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20160303/8da4f0de/attachment.html>
Oliver, Not correct! Duncan and Toufic are spot-on with their answers. Pete> On 4/03/2016, at 5:40 am, Toufic Gmail <toufic.khreish at gmail.com> wrote: > >> >> PS: I was about to determine best MTU value but I always thought a punishment for a bad MTU value would be a lower throughput, not a screen freeze. Is it correct ?-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20160304/0d38b1f6/attachment.html>