Re: [asterisk-users] Asterisk temporary hangs when no internet connection
Hello, sorry for dropping in so late but I encountered the same problems so I started playing around with IPTABLES and DNS servers. For me it looks like asterisk has a problem because it seems to do reverse dns lookups (PTR records). For me the following helped: I installed a local dns recursor. I used the one from powerdns (apt-get install pdns-recursor). Then I put 127.0.0.1 as only nameserver in my /etc/resolv.conf. Next thing I did is telling my dns server to be contain authoritative data for the in-addr.arpa zone. I added the following line auth-zones=in-addr.arpa=/etc/powerdns/zone-in-addr.arpa to /etc/powerdns/recursor.conf and then created an empty file /etc/powerdns/zone-in-addr.arpa. Now things seem to work without internet. I do not understand why a PBX is such dependent on internet (DNS) connectivity. Maybe someone from the dev list can clear things up. If I disable DNS lookups by some router/iptables magic asterisk cant even do a normal reload. Best regards, Loic Didelot. On Fri, 2008-04-11 at 13:49 -0500, Andres wrote: Marius Muja wrote: Hello all, I have the following problem: if there is a temporary loss of Internet connectivity, the asterisk server 'hangs' if it has external SIP trunks configured. By hanging I mean that any calls between the local extensions and any calls to the voicemail extension stop working. Everything works fine again when the internet connectivity returns (I tested this by removing and reinserting the network cable from the cable modem). My guess is that the asterisk server tries resolving the names of the SIP providers when it tries to re-register to them and because there is no internet connectivity it hangs there for a while. However in that time all the local calls to the asterisk server stop working. Has anybody else encountered this problem? Yes, this is a common issue. A workaround is to use IP Addresses or enter hostnames manually in /etc/hosts Andres http://www.neuroredes.com Thanks! ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- 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 -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- Loïc DIDELOT MIXvoip S.a. [EMAIL PROTECTED] http://www.mixvoip.com ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk temporary hangs when no internet connection
Seems like it would have been much simpler just to correct your /etc/hosts file. Most systems check /etc/hosts before consulting DNS for IP and host information. Loic DIDELOT wrote: Hello, sorry for dropping in so late but I encountered the same problems so I started playing around with IPTABLES and DNS servers. For me it looks like asterisk has a problem because it seems to do reverse dns lookups (PTR records). For me the following helped: I installed a local dns recursor. I used the one from powerdns (apt-get install pdns-recursor). Then I put 127.0.0.1 as only nameserver in my /etc/resolv.conf. Next thing I did is telling my dns server to be contain authoritative data for the in-addr.arpa zone. I added the following line auth-zones=in-addr.arpa=/etc/powerdns/zone-in-addr.arpa to /etc/powerdns/recursor.conf and then created an empty file /etc/powerdns/zone-in-addr.arpa. Now things seem to work without internet. I do not understand why a PBX is such dependent on internet (DNS) connectivity. Maybe someone from the dev list can clear things up. If I disable DNS lookups by some router/iptables magic asterisk cant even do a normal reload. wide. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] Asterisk temporary hangs when no internet connection
Hello all, I have the following problem: if there is a temporary loss of Internet connectivity, the asterisk server 'hangs' if it has external SIP trunks configured. By hanging I mean that any calls between the local extensions and any calls to the voicemail extension stop working. Everything works fine again when the internet connectivity returns (I tested this by removing and reinserting the network cable from the cable modem). My guess is that the asterisk server tries resolving the names of the SIP providers when it tries to re-register to them and because there is no internet connectivity it hangs there for a while. However in that time all the local calls to the asterisk server stop working. Has anybody else encountered this problem? Thanks! ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk temporary hangs when no internet connection
Marius Muja wrote: My guess is that the asterisk server tries resolving the names of the SIP providers when it tries to re-register to them and because there is no internet connectivity it hangs there for a while. However in that time all the local calls to the asterisk server stop working. Try using a local DNS server. Sounds like its waiting on DNS lookups... ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk temporary hangs when no internet connection
It is using a local DNS server. On Fri, Apr 11, 2008 at 10:43 AM, Steven Kurylo [EMAIL PROTECTED] wrote: Marius Muja wrote: My guess is that the asterisk server tries resolving the names of the SIP providers when it tries to re-register to them and because there is no internet connectivity it hangs there for a while. However in that time all the local calls to the asterisk server stop working. Try using a local DNS server. Sounds like its waiting on DNS lookups... ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- 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 -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk temporary hangs when no internet connection
This is a very common issue with Asterisk. There is no good fix, but if you make sure ALL IP addresses of the server are listed in /etc/hosts on the server it may help. Marius Muja wrote: It is using a local DNS server. On Fri, Apr 11, 2008 at 10:43 AM, Steven Kurylo [EMAIL PROTECTED] wrote: Marius Muja wrote: My guess is that the asterisk server tries resolving the names of the SIP providers when it tries to re-register to them and because there is no internet connectivity it hangs there for a while. However in that time all the local calls to the asterisk server stop working. Try using a local DNS server. Sounds like its waiting on DNS lookups... ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- 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 -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- Consulting for Asterisk, Polycom, Sangoma, Digium, Cisco, LAN, WAN, QoS, T-1, PRI, Frame Relay, Linux, and network design. Based near Birmingham, AL. Now accepting clients worldwide. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Asterisk temporary hangs when no internet connection
Marius Muja wrote: Hello all, I have the following problem: if there is a temporary loss of Internet connectivity, the asterisk server 'hangs' if it has external SIP trunks configured. By hanging I mean that any calls between the local extensions and any calls to the voicemail extension stop working. Everything works fine again when the internet connectivity returns (I tested this by removing and reinserting the network cable from the cable modem). My guess is that the asterisk server tries resolving the names of the SIP providers when it tries to re-register to them and because there is no internet connectivity it hangs there for a while. However in that time all the local calls to the asterisk server stop working. Has anybody else encountered this problem? Yes, this is a common issue. A workaround is to use IP Addresses or enter hostnames manually in /etc/hosts Andres http://www.neuroredes.com Thanks! ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- 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 -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
