Strange issue in registering users in Kamailio

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Strange issue in registering users in Kamailio

Mojtaba
Hello guys,
Finally i found what was my problem.
It was about ARP table size, becuase is set to 1024 record in ubuntu.
when i try to register a lot of users with different source ip to
kamailio (or other sip server like asterisk and etc), after some
minutes, the arp table is fulled and these warrning may be issue:
In kamailio:
Jun 14 16:06:50 172-1-1-158
/usr/local/kamailio-5.0/sbin/kamailio[31864]: ERROR: <core>
[core/tcp_read.c:1319]: tcp_read_req(): ERROR: tcp_read_req: error
reading - c: 0x7f2518774590 r: 0x7f2518774610
Jun 14 16:06:50 172-1-1-158
/usr/local/kamailio-5.0/sbin/kamailio[31859]: ERROR: <core>
[core/tcp_read.c:1319]: tcp_read_req(): ERROR: tcp_read_req: error
reading - c: 0x7f2518d4ebf0 r: 0x7f2518d4ec70
Jun 14 16:06:50 172-1-1-158
/usr/local/kamailio-5.0/sbin/kamailio[31868]: ERROR: <core>
[core/tcp_read.c:291]: tcp_read_data(): error reading: Connection
reset by peer (104) ([192.168.13.227]:59948 ->
Jun 14 16:06:50 172-1-1-158
/usr/local/kamailio-5.0/sbin/kamailio[31868]: ERROR: <core>
[core/tcp_read.c:292]: tcp_read_data(): -> [192.168.0.221]:5060)
Jun 14 16:06:50 172-1-1-158
/usr/local/kamailio-5.0/sbin/kamailio[31868]: ERROR: <core>
[core/tcp_read.c:1319]: tcp_read_req(): ERROR: tcp_read_req: error
reading - c: 0x7f25191387c0 r: 0x7f2519138840
J
In Asterisk:
Jun 16 00:59:09 asterisk11 kernel: [ 5042.988477] Neighbour table overflow
[Jun 16 00:59:14] WARNING[2811] chan_sip.c: sip_xmit of 0x7f94fd08a4e0
(len 488) to 192.168.14.116:5060 returned -1: No buffer space
available
 you should add some parameters in sysctl.conf in ubuntu:
net.ipv4.neigh.default.gc_thresh1 = 512
net.ipv4.neigh.default.gc_thresh2 = 1024
net.ipv4.neigh.default.gc_thresh3 = 2048

Good luck
With regards.Mojtaba Esfandiari.S


--
--Mojtaba Esfandiari.S

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