[Freeswitch-dev] VLAN support in sofia module

[Steven Ayre]

Plus the sofia library does not currently support SO_BINDDEVICE so it
would mean patching the library as well as FS.

-Steve


On 10 November 2010 08:54, Steve Kurzeja <steve.kurzeja at gmail.com> wrote:
> I think what the original poster is saying is that his existing architecture
> uses "overlapping" IP addresses ("one ip address for all clients").
> Clients/devices are on separate vlans and the SBC sits in each vlan
> listening on the same IP address. Client <--> SBC IP is then on the same
> broadcast domain and not IP routed. The clients are all configured to talk
> to the same SBC address which makes provisioning simple.
>
> So he would want something like this:
>
> sip profile 1 listening on 10.0.0.1 vlan1
> sip profile 2 listening on 10.0.0.1 vlan2
>
> The likes of ACME packet SBCs/GENBAND etc support this but it is not
> possible in freeswitch currently.
>
> In linux this can be done using the SO_BINDDEVICE socket option to force
> packets out a particular interface rather than use the linux IP routing
> table. A good description is here:
> http://codingrelic.geekhold.com/2009/10/code-snippet-sobindtodevice.html
>
> Regards,
> Steve
>
>
> On Wed, Oct 27, 2010 at 6:22 AM, Anthony Minessale
> <anthony.minessale at gmail.com> wrote:
>>
>> its not possible to listen on 0.0.0.0 you can only guess at best on
>> which ip goes with what packets and you cannot choose which source
>> addr to put in outbound packets in that case.  This is a limitation
>> caused by the design of the SIP spec.
>>
>>
>> You must create a distinct profile for every interface with the
>> desired IP from each vlan.
>>
>>
>>
>> On Tue, Oct 26, 2010 at 11:49 AM, Steven Ayre <steveayre at gmail.com> wrote:
>> > Thinking about it, it won't work. ext-sip-ip will be inside the
>> > packets but they'll be sent from sip-ip so the clients won't see it
>> > coming from the IP you want.
>> >
>> > On 26 October 2010 17:47, Steven Ayre <steveayre at gmail.com> wrote:
>> >> Possibly your best bet would be to set sip-ip and rtp-ip to the
>> >> specific interface and ext-sip-ip and ext-rtp-ip to the global IP.
>> >>
>> >> I don't know how well this'll work though. Sofia might get very
>> >> confused about where to send stuff to, since the same IP is used on
>> >> essentially separate networks.
>> >>
>> >> -Steve
>> >>
>> >>
>> >> On 23 October 2010 19:47, Adam Kuśmirek <amkusmirek at gmail.com> wrote:
>> >>> Hi All
>> >>>
>> >>> I would like to run FreeSwitch as SBC in my network. I have
>> >>> architecture with all clients connected via separate vlans.
>> >>> It gives me possibility to use one ip address for all clients, but I
>> >>> need FS sofia profile to bind to specific interface (eg eth0:20 vlan
>> >>> 20) and global ip address.
>> >>> As I see, for now sofia module allows to bind to ip address only. I
>> >>> looked quickly to sourcees and it seems that this is limited by sofia
>> >>> library.
>> >>> Of course i may be wrong because I'm new to FS and didn't have time to
>> >>> analyze sources.
>> >>> Please, write some words on this topic.
>> >>> Do you have plans to implement vlan support in FS.
>> >>> I know that AcmePacket Net-Net gives such feature. Don't know any open
>> >>> voip solution with this iplemented.
>> >>>
>> >>> Regards Adam
>> >>>
>> >>> _______________________________________________
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>> >>>
>> >>
>> >
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>>
>>
>> --
>> Anthony Minessale II
>>
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