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List Info
Thread: Failover testing
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| Failover testing |
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2006-04-29 15:19:15 |
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| the CM stopped/started test is a big hint. Sounds like your incoming circuit is timing out the call before the h323 gateway hunts to an available CM.
when the server is shut down you must wait for TCP session establish timeout when server is up but CM is shut down you get immediate ICMP port unreachable from CM back to the GW so the GW knows to try the next available member (usually specified with 'preference' on the voip dial-peer)
You probably need to decrease the h225 session setup timers in your gateway confiug: You could even turn it down to 1: h225 timeout tcp establish 1
if CM does not respond in 1 second (depending on your network round trip time) most likely it is not going to respond at all.
/Wes
On Apr 29, 2006, at 11:09 AM, Nick Kassel wrote: We have been doing some failover testing between call managers today and I have come across an issue with one of out remote sites. We have a 3 call manager cluster and the if I shut down the subscriber that this site is registered to then all the phones will register to the other subscriber but when I place a call to the phones I get destination out of order on the debug, I have dial peers for all three call managers in the config, however if I were to just stop the call manager service on the subscriber and not shut the server down then I can place calls to the phones fine, it would appear that when the subscriber is not on the network then the calls don’t go through. Has anyone seen any issues like this before.
The config is as follows. ! ! ! dial-peer cor custom ! ! ! dial-peer voice 100 voip destination-pattern . codec g711ulaw fax rate disable no vad ! dial-peer voice 9 pots call-block translation-profile incoming call_block_profile call-block disconnect-cause incoming invalid-number destination-pattern 9T progress_ind alert enable 8 fax rate disable direct-inward-dial port 0/0:15 ! dial-peer voice 8201 voip description Fax Dial-Peer destination-pattern 8020[1-3] progress_ind setup enable 3 session target ipv4:172.21.18.3 dtmf-relay h245-alphanumeric codec g711ulaw fax rate disable ip qos dscp cs5 media no vad ! dial-peer voice 82 voip destination-pattern 802.. progress_ind setup enable 3 translate-outgoing calling 1 session target ipv4:172.30.0.2 dtmf-relay h245-alphanumeric codec g711ulaw ip qos dscp cs5 media no vad ! dial-peer voice 83 voip destination-pattern 802.. progress_ind setup enable 3 translate-outgoing calling 1 session target ipv4:172.30.0.3 dtmf-relay h245-alphanumeric codec g711ulaw ip qos dscp cs5 media no vad ! dial-peer voice 84 voip destination-pattern 802.. progress_ind setup enable 3 translate-outgoing calling 1 session target ipv4:172.20.100.2 dtmf-relay h245-alphanumeric codec g711ulaw ip qos dscp cs5 media no vad ! num-exp 02.. 802.. gateway timer receive-rtp 1200 ! ! call-manager-fallback secondary-dialtone 9 max-conferences 4 ip source-address 172.21.18.2 port 2000 max-ephones 48 max-dn 60 time-format 24 date-format dd-mm-yy ! ! line con 0 line aux 0 line vty 0 4 exec-timeout 60 0 password telnet login ! ! end
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