[Freeswitch-users] Supress Unregister at external gateway

[Peter P GMX]

Thanks, David,

here are my coments:

>(a) can you not do something where you deregister them one at a time,
or in batches, on FS1
>while registering them on FS2?
A batch is a good method, and reduces the downtime of course

>(b) use method 1, but set a short period for re-registration initially,
and then increase it once FS1's
>taken down?
another good method, but forced to re-register all 5000 gateways, this
produces a high load, and anyway FS is spreading re-registers over the
expires time period (by trying out, this deos not seem to be documented
somewhere?).

<(c) use method 1, but take FS1 off the network before taking it down
(e.g. ifdown eth0, route delete default..?)
>so that its unregistration attempts don't reach the gateways?
This will drop existing calls. We thought about adding another firewall
rule, but we would like to keep it simple and stable in a production
environment.

Best regards
Peter

David Knell schrieb:
> Hi Peter,
>
> A quick brainstorm:-
> (a) can you not do something where you deregister them one at a time,
> or in batches, on FS1
> while registering them on FS2?
> (b) use method 1, but set a short period for re-registration
> initially, and then increase it once FS1's
> taken down?
> (c) use method 1, but take FS1 off the network before taking it down
> (e.g. ifdown eth0, route delete default..?)
> so that its unregistration attempts don't reach the gateways?
>
> Cheers --
>
> Dave
>> I have the following scenario for a 2-server FS system with failover
>> functionality:
>>
>>     * I have a number of Gateways registered at FS1
>>     * I have another number of Gateways registered at FS2
>>     * In case I want to do maintenance on FS1 I would like all
>>       external gateways to be registered on FS2 and then shutdown FS1
>>     * This is not of a problem if I have only a handful of gateways,
>>       but in our case they're about 10.000
>>     * The goal is to minimze downtime, when I migrate  e.g. 5000
>>       gateways from FS1 to FS2
>>
>>     * 1st method: The normal way would be to register (via xml-rpc or
>>       socket) the new Gateway on FS2 and then deregister it on FS1.
>>       FS1 sends an unregister (register with expires=0) to the
>>       gateway though (after the register from FS2), so this Gateway
>>       unfortunately no longer sends calls to any of the 2 FS.
>>     * 2nd method: The other way is to deregister them first on FS1
>>       and then register them all on FS2. Because deregistering and
>>       registering takes time with ~5000 Gateways (+ we have to ensure
>>       that the new register has to take place after unregister), this
>>       results in a significant downtime.
>>
>> So my question: Is there any way to suppress deregister messages to
>> the gateway?
>>
>> Best regards
>> Peter
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>
>
> -- 
> David Knell, Director, 3C Limited
> T: 020 8114 8901  F: 020 3002 7257  M: 001 415 630 3031
> http://www.3c.co.uk 
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