Subject: RE: [SUA Issue] Hop Counter

From: [email-masked]
Date: Wed, 29 Aug 2001 15:02:04 +0300

Brian,

My thinking is that Hop Counter can be present in SUA message
(where appropriate).  The value can be gotten from the SCCP
layer at the SG.  The value of the Hop Counter SHOULD be
decremented at the SG and any SUA-relay nodes.

Would that do it for you?  

Alternately, we could could say:

  An SUA implementation MAY set the value of the Hop Counter
  to 0xFF to indicate that the (SUA) Hop Counter should be
  ignored.

Comments?
John

> -----Original Message-----
> From: ext Brian F. G. Bidulock [mailto:[email-masked]]
> Sent: 28 August, 2001 22:34
> To: sigtran
> Subject: Re: [SUA Issue] Hop Counter
> 
> 
> Gery,
> 
> Verwimp Gery wrote:                                       
> (Tue, 28 Aug 2001 15:31:42)
> > John,
> > 
> > Hop counter is mandatory for CLDT, CLDR and CORE (all that 
> can be routed on
> > GT).  Procedures apply to decrement the hop counter 
> whenever GTT/AMF is
> > invoked to prevent loops.
> > 
> > There's also no reason why the hop counter value can't be 
> transparently
> > passed between SCCP and SUA at the SG. The perceived 
> "impossibility" again
> > comes from an incorrect view of the NIF as "SCCP or 
> SUA-user", which doesn't
> > have the hop counter in the "user interface". But the NIF 
> is any possible
> > interworking between SCCP and SUA at the SG.
> 
> But one which needs to be described so that implementations 
> can interoperate
> properly with regard to hop counter.
> 
> --brian
> 
> -- 
> Brian F. G. Bidulock
> [email-masked]
> http://www.openss7.org/
> 
> 
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