26 Feb
2004
26 Feb
'04
6:03 p.m.
Check out this method.
http://www.presttun.org/kare/DNS/DNS-LB-FT.pdf
It's designed for HTTP requests, but I don't see any reason that it couldn't
be used for SER as well.
Darren Nay
-----Original Message-----
From: Klaus Darilion [mailto:klaus.mailinglists@pernau.at]
Sent: Thursday, February 26, 2004 12:55 PM
To: Andres
Cc: Nils Ohlmeier; serusers(a)lists.iptel.org
Subject: Re: [Serusers] replication and rtpproxy
But this will work only if the client uses your DNS servers, because the
DNS entries are cached by the other nameservers - or do you have a very
short TTL configured?
I think also softclients will have problems as Windows XP by default
caches the DNS lookups.
regards,
klaus
Andres wrote:
Hi Klaus,
We use DNS updates. We have special scripts based on sipsak (Thanks
Nils!),
that check all SIP servers every minute. If something
is wrong, then we
update our DNS dynamically to point to another SIP Server. If the UAs are
unable to register then they redo their DNS query and find the new IP.
Works quite well in combination with replication since the backup server
has
the exact duplicate location table.
Regards,
Andres
----- Original Message -----
From: "Klaus Darilion" <klaus.mailinglists(a)pernau.at>
To: "Nils Ohlmeier" <nils(a)iptel.org>
Cc: <serusers(a)lists.iptel.org>
Sent: Thursday, February 26, 2004 9:59 AM
Subject: Re: [Serusers] replication and rtpproxy
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Nils Ohlmeier wrote:
>On Thursday 26 February 2004 03:28, Arnd Vehling wrote:
>
>>Next question :) Is there any way that a failover server pickups the
>>neccessary port bindings for portaones rtpproxy or do will all
>>"rtpproxied" sessions fail when a failover server will take over
>>a primary server?
>
>
>As currently the rtp-proxy has to run on the same host as SER it does
not make
>much sence IMHO to think about taking over
rtp-proxy sessions. Then you
would
>need some kind of rtp-proxy session
replication, which should be easy
when
>the nathelper module and the rtp proxy ever
uses IP protocol for
>communication. But all this will only work if the backup server takes
over
>the IP of the failed server, and you are not
using SRV backup servers
for
>example (except that a SRV backup can
obviously also can takeover the
IP).
Is it yet possible to build redundancy on top of
SRV? I tested some
clients (Xlite, Budgetone-100, Windows Messenger 4.7) wether they use
SRV records to locate the proxy and Messenger is the only one who uses it.
So, if I use these clients, is there any other failover solution than IP
takeover?
regards,
klaus
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