[asterisk-ss7] Combined linksets and mtp3d

[Michael Mueller]

Better chance of working without doing additional development. ssp to stp1
would be primary. ssp to stp2 would be alternative.

A1------------stp1----------ssp
 |                 |               |
 |         +-----+              |
 |         |                      |
+---------------+               |
          |       |                |
 +------+       |                |
 |                |                |
A2------------stp2-----------+


On Thu, Jan 12, 2012 at 9:50 AM, German Becker <german.becker at gmail.com>wrote:

> HI Michael, thanks for the reply. By hosts I mean asterisk boxes, that
> would make them SSPs Both of them are connected with one signalling link to
> one STP (different STP for each host) wich in turn will connect to the
> destination STP(s). I'll try to sketch the scenario
>
> -------------
> | Asterisk1 |--voice trunks-
> | mtp3d     |----------------|STP 1|----------|SSP| (destination point
> code)
> -------------                            /
>     | (tcp)                             /
> ------------                           /
> |Asterisk2  |--voice trunks           /
> |mtp3d      |----------------|STP 2|--
> ------------
>
> As for the variant. it is ITU. And weather it would be primary/alternate
> or "load balanced" is under discussion with the connected party. However
> load bancing is a possibility.
>
> What I would like to achieve is for incomming messages, both mtp3d route
> them to the corresponding host (according to cic and ord opc); and for
> outgoing messages, each asterisk deceide on which link (or linkset) send
> it.
>
> I thought something like these could be achieved, based on this part of
> the below(l4isuop.c), However, I don't get how should i configure it.
>
>     switch (link->linkset->loadshare) {
>         case LOADSHARE_NONE:
>             if (!link->schannel.mask)
>                 slink = link;
>             break;
>         case LOADSHARE_LINKSET:
>             if (linkset->n_slinks)
>                 slink = linkset->slinks[cic % linkset->n_slinks];
>             break;
>         case LOADSHARE_COMBINED_LINKSET:
>             {
>                 int n_slinks = 0;
>                 int six;
>                 for (lsi = 0; lsi < n_linksets; lsi++)
>                     if (linksets[lsi].enabled)
>                         if (&linksets[lsi] == linkset ||
>                                 (is_combined_linkset(linkset,
> &linksets[lsi])))
>                             n_slinks += linksets[lsi].n_slinks;
>                 if (n_slinks) {
>                     six = cic % n_slinks;
>                     n_slinks = 0;
>                     for (lsi = 0; lsi < n_linksets; lsi++)
>                         if (linksets[lsi].enabled)
>                             if (&linksets[lsi] == linkset ||
>                                     (is_combined_linkset(linkset,
> &linksets[lsi]))) {
>                                 if (six - n_slinks <
> linksets[lsi].n_slinks) {
>                                     slink = linksets[lsi].slinks[six -
> n_slinks];
>                                     break;
>                                 }
>                                 n_slinks += linksets[lsi].n_slinks;
>                             }
>                 }
>             }
>             break;
>     }
>
>
>
> On Thu, Jan 12, 2012 at 11:29, Michael Mueller <ss7box at gmail.com> wrote:
>
>> are those 2 "hosts" STPs or SSPs? what you describe could be a combined
>> linkset if connected to STPs and using ANSI SS7; if using ITU then this
>> might be a primary/alternate linkset scenario; my experience says the
>> combined linkset concept exists in ANSI SS7 and not in ITU
>>
>> On Thu, Jan 12, 2012 at 8:15 AM, German Becker <german.becker at gmail.com>wrote:
>>
>>> Hi,
>>>
>>> I have a scenario with 2 hosts, 2 links on each host, one of the links
>>>  with signaling on each host and the DPC for all the voice TS reachable
>>> through both signaling links.
>>>
>>> I'm not sure if I need to create a single linkset with two signaling
>>> links on it (one per host), or two combined linksets.
>>> I tried the 2 links aproach, but when one of the links is down (i.e.
>>> asterisk lose connection with the remote mtp3d), all the TS are set to
>>> block, instead of singnaling through the other link.
>>>
>>> Has anyone set up a similar scenario?
>>>
>>>
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>>
>>
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>
>
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