9 Nov
2023
9 Nov
'23
4 p.m.
On 08/11/2023 15.33, [EXT] David Cunningham via sr-users wrote:
Hello,
We have a Kamailio configuration with the following, however all the
load is going to the server at 22.22.22.22 (hiding the real IP
obviously) instead of being shared evenly between 22.22.22.22 and
33.33.33.33. Can anyone please tell me why? The rtpengine server at
11.11.11.11 is intended to only receive calls if the other two are
offline. Thank you very much.
#!define RTPENGINE_ADDR "udp:11.11.11.11:7724=1
udp:22.22.22.22:7724=99999999 udp:33.33.33.33:7724=99999999"
modparam( "rtpengine", "rtpengine_sock", RTPENGINE_ADDR )
I recall this was discussed on the mailing list before, but of course I
can't find the relevant thread.
What happens is that for legacy reasons (read: I don't really know why),
if the default hashing algorithm (simple hash over call ID) is used,
then the resulting weight is capped at 255. That means that no proxies
beyond an accumulated weight of 255 will ever be used.
So either keep the sum of your weights below that, or use a different
hashing algorithm (CRC or SHA-1).
Cheers