[OpenSIPS-Users] [dispatcher] long delay in failed gw detection

[Klaus Darilion]

set the fr_timer to a short value (e.g. 2 seconds)

klaus

Pascal Maugeri schrieb:
> Hi
> 
> We have a configuration with one dispatcher that load-balances traffic 
> to two SIP registrars.
> 
> When I shutdown one registrar server, the failure is detected in 30 
> seconds approximately. Is that a normal response time ? Or should we 
> expect shorter response times ? (I expect yes :-) ).
> 
> More precisely, having two target gateways named REG1 and REG2, if Is 
> shutdown REG2 at t0:
> - traffic (SIP REGISTER messages) will be still load-balanced to REG1 
> and REG2 during the first 7 seconds (t0+7seconds),
> - then untill t0+30seconds, traffic will be sent exclusively to REG2 
> (the failed gw),
> - from t0+30s to t0+35, traffic will be sent to both gateways REG1 and 
> REG2 again,
> - from t0+35s traffic will be sent to REG1 exclusively.
> 
> During the test we see the SIP OPTIONS messages sent to both REG1 and REG2.
> 
> For the dispatcher we are using the following configuration:
> 
> modparam("dispatcher", "list_file", 
> "/usr/local/etc/kamailio/dispatcher.list")
> modparam("dispatcher", "flags", 3)
> modparam("dispatcher", "dst_avp", "$avp(i:271)")
> modparam("dispatcher", "grp_avp", "$avp(i:272)")
> modparam("dispatcher", "cnt_avp", "$avp(i:273)")
> modparam("dispatcher", "ds_ping_method", "OPTIONS")
> modparam("dispatcher", "ds_ping_interval", 3)
> modparam("dispatcher", "ds_ping_from", "sip:fend1 at 10.132.184.33 
> <mailto:sip%3Afend1 at 10.132.184.33>")
> modparam("dispatcher", "ds_probing_threshhold", 1)
> modparam("dispatcher", "ds_probing_mode", 1)
> modparam("dispatcher", "force_dst", 1)
> 
> route{
> 
>         ds_select_dst("1", "0");
>         xlog("L_INFO","---> $avp(i:271) $avp(i:272) $avp(i:273)");
>         t_on_failure("1");
>         t_relay();
> 
> }
> 
> failure_route[1] {
> 
>         xlog("L_INFO", "Marking GW as failed...\n");
>         ds_mark_dst("i");
>         ds_next_dst();
>         t_on_failure("1");
>         t_relay();
> 
> }
> 
> 
> Regards,
> -pascal
> 
> 
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> 
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