[asterisk-ss7] asterisk-ss7 Digest, Vol 29, Issue 15

[kiran]

Hi arvind,

where are you using libss7 Powerpc side ?

and what is the physical connection between sg and the ss7 stack(is this libss7)

I am running my SG  (Signalling Gateway ) Stack on Power PC 8260 Processor (Embedded Linux).
OS is embedded Linux.

Signalling link is up between SG Statck and another SS7 Stack.

When I run some load through SS7 Stack, after some time the Signalling Link goes down.
I found the problem, the problem is happening at MTP2 level.  
The link is failing due to receiving of incorrect FIB (Forward Indicator Bit ) and / or BSN (Backward Sequence Number) at MTP2 Level.
According to recommendation Link can go down.
Now my query is, what can be the problem, is it on my end or remote end, and
how can it be resolved if possible.

Thanks in Advance
Regards,
Arvind












  On 7/30/07, asterisk-ss7-request at lists.digium.com < asterisk-ss7-request at lists.digium.com> wrote:
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    Today's Topics:

       1. SS7 Link Failure. (Arvind Kumar)
       2. Re: SS7 Link Failure. (Matthew Fredrickson)


    ---------------------------------------------------------------------- 

    Message: 1
    Date: Mon, 30 Jul 2007 19:22:16 +0530
    From: "Arvind Kumar" <arvindverma77 at gmail.com>
    Subject: [asterisk-ss7] SS7 Link Failure.
    To: asterisk-ss7 at lists.digium.com
    Message-ID:
            <1592b2ae0707300652q78d18cb6n940cb381a7b965e4 at mail.gmail.com >
    Content-Type: text/plain; charset="iso-8859-1"

    Hi!
    Could you please help me.
    I running load on SS7 Signalling Link. After some time the link is going
    down,
    I identified it is going due to abnormal FIB, 2 out of 3 FIB are not proper. 
    It is ok according to
    ITU recommendation,
    I want to resolve this problem. I want to know whether this is problem with
    my stack or another side stack or something else like clock etc. Kindly
    help.

    Thanks & 
    With Best Regards,
    Arvind
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    ------------------------------

    Message: 2
    Date: Mon, 30 Jul 2007 09:49:36 -0500
    From: Matthew Fredrickson < creslin at digium.com>
    Subject: Re: [asterisk-ss7] SS7 Link Failure.
    To: asterisk-ss7 at lists.digium.com
    Message-ID: < 46ADFA7F.3080700 at digium.com>
    Content-Type: text/plain; charset=ISO-8859-1; format=flowed

    Arvind Kumar wrote:
    > Hi!
    > Could you please help me.
    > I running load on SS7 Signalling Link. After some time the link is going 
    > down,
    > I identified it is going due to abnormal FIB, 2 out of 3 FIB are not proper.
    > It is ok according to
    > ITU recommendation,

    Can you explain further what you are talking about?  Your description of 
    the problem doesn't seems sufficient to explain what's going on.

    Also, what stack and setup are you using?

    Thanks.

    --
    Matthew Fredrickson
    Software/Firmware Engineer
    Digium, Inc.



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