[Serusers] about distributed SER

[Klaus Darilion]

1. You can replicate REGISTER messages, than every proxy has a complete 
view of all registered proxy.

2. You could also use a special dial planes and user names: e.g. all 
clients registered at SER start with 1, e.g. 12345. clients that 
register at ser 2 begin with 2 in their usernames, e.g. 22345.

If SER1 receives a request for 2xxxx, it forwards the request to proxy 2.

btw: please always cc: to the list! (reply all)

regards,
Klaus

simple wrote:

> Ok, maybe I did not express my question very clearly, what I want is like this:
> 
> ------   registered ---------
> | C1  |-----in---->|  SER1  |\
> ------                   ---------  \ -----------
>                                             / | Internet   |
> ------   registered ---------/   -----------
> | C2  |-----in---->|  SER2  |
> ------                   ---------
> 
> SER1 and SER2 are in different places, now, I want C1 can call C2. Do I need a exclusive public server to store user information database, and act like a redirect server, then, SER1 can forward C1's INVITE to SER2.
> 
> Do you think there are other better solutions to support my demand? Thanks for your help.
> 
> Regards!
> 
> Simple Li
> 
> ----- Original Message ----- 
> From: "Klaus Darilion" <klaus.mailinglists at pernau.at>
> To: "simple" <simple at vlichina.com>; "Serusers" <serusers at lists.iptel.org>
> Sent: Tuesday, February 10, 2004 3:34 PM
> Subject: Re: [Serusers] about distributed SER
> 
> 
> 
>>Details: ser caches user lcoations, that means, if it lookup() a user, 
>>ser does not query the database as the user lcoations are stored in RAM.
>>New REGISTER are stored by save(). The writeback into the database can 
>>be done immediately (safe, but slower) or delayed (not so safe, but 
>>faster). more info on this can be found in the README of the userloc module.
>>
>>So, now you know the basics to build up your system, e.g:
>>- 2 proxies + data bases
>>
>>--------------+    replicated REGISTER     +------------+
>>| active proxy| -------------------------> |backup proxy|
>>--------------+                            +------------+
>>        |                                          |
>>        |                                          |
>>        |                                          |
>>        |data                                      |data
>>        |base                                      |base
>>        |write                                     |write
>>        |through                                   |through
>>        |                                          |
>>        V                                          V
>>----------------+                          +---------------+
>>|active database|                          |backup database|
>>----------------+                          +---------------+
>>
>>if the active proxy or database fails, you have to switch over to the 
>>bakup combination (manually or autmatically).
>>
>>You could also use only one database, but than only the active proxy is 
>>allowed to save() to the database.
>>
>>You could also make the database failover transparent to the SIP proxy: 
>>2 databases with replication enabled, and if the main one fails, the 
>>backup db takes the IP address of the failed one.
>>
>>
>>So, these are some theoretical solutions. I hope the guys which uses ser 
>>in production environments have some comments on this.
>>
>>regards,
>>Klaus
>>
>>PS: always CC to the list
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>simple wrote:
>>
>>>Thanks for your so quick reply, I still have a question, can you give a detail of the synchronization of several proxies? thanks!
>>>
>>>Simple Li
>>>
>>>
>>>----- Original Message ----- 
>>>From: "Klaus Darilion" <klaus.mailinglists at pernau.at>
>>>To: "simple" <simple at vlichina.com>
>>>Cc: <serusers at lists.iptel.org>
>>>Sent: Monday, February 09, 2004 6:30 PM
>>>Subject: Re: [Serusers] about distributed SER
>>>
>>>
>>>
>>>
>>>>Hi can use the several proxies and every proxy uses its own database for
>>>>uerlocation. The keep the userlocation consistent, you can use the
>>>>register() function to synchronize the several proxies.
>>>>
>>>>klaus
>>>>
>>>>simple wrote:
>>>>
>>>>
>>>>>Dear sir,
>>>>>   I have an idea to use SER as SIP proxy in many different places, 
>>>>>different clients register in defferent SER, there may be a centralized 
>>>>>user information of all these clients, may be not, and all these clients 
>>>>>can make a call to each other. So, my question is if there has 
>>>>>an example used like this, otherwise, how can we make some changes to 
>>>>>make this happen.
>>>>>
>>>>>Thanks!
>>>>>
>>>>>Simple Li
>>>>>  
>>>>>
>>>>>
>>>>>------------------------------------------------------------------------
>>>>>
>>>>>_______________________________________________
>>>>>Serusers mailing list
>>>>>serusers at lists.iptel.org
>>>>>http://lists.iptel.org/mailman/listinfo/serusers
>>>
>>>>