RE: DRN and TID Label Issues - Issue #2

Brian,

I agree, when DRN/TID routing is used, it is an extra level of routing.
Again, it seems obvious.

Regards,
Lincoln 

-----Original Message-----
From: Brian F. G. Bidulock [mailto:[email protected]] 
Sent: Wednesday, October 11, 2006 4:56 PM
To: Haresign Lincoln
Cc: Barry Nagelberg; [email protected]
Subject: Re: DRN and TID Label Issues - Issue #2

Lincoln,

The two sentences state that the implementation must loadshare carefully
and according to its knowledge of the degree of state coordination
between ASPs in the AS.  DRN/TID label conflicts with that statement in
that is proscribed a specific method regardless of the knowledge that
the SG implementation has of the degree of state sharing between ASPs.

The sentence needs to be modified to note that this applies to loadshare
AS that do not have DRN/TID labels.  When DRN/TID labels are applied,
the SG must follow the proscribed procedures.

--brian

Haresign Lincoln wrote:                                           (Wed,
11 Oct 2006 16:47:56)
> Brian,
> 
> When dealing with loadshare, the ASPs are in control of the TID
values.
> I don't see the issue.
> 
> Regards,
> Lincoln
>  
> 
> -----Original Message-----
> From: Brian F. G. Bidulock [mailto:[email protected]]
> Sent: Wednesday, October 11, 2006 4:41 PM
> To: Haresign Lincoln
> Cc: Barry Nagelberg; [email protected]
> Subject: Re: DRN and TID Label Issues - Issue #2
> 
> Lincoln,
> 
> The last two sentences speak to Loadshare as well.
> 
> --brian
> 
> Haresign Lincoln wrote:
(Wed,
> 11 Oct 2006 16:31:48)
> > Brian,
> > 
> > Again, I don't believe Broadcast mode is relevant to TID routing.  
> > It seemed obvious to me.  If you feel it is necessary to specify 
> > this in the IG, please indicate and I'm sure we can all agree on
some wording.
> > 
> > Regards,
> > Lincoln
> > 
> > -----Original Message-----
> > From: Brian F. G. Bidulock [mailto:[email protected]]
> > Sent: Wednesday, October 11, 2006 3:43 PM
> > To: Haresign Lincoln
> > Cc: Barry Nagelberg; [email protected]
> > Subject: DRN and TID Label Issues - Issue #2
> > 
> > Lincoln,
> > 
> > RFC 3868 says:
> > 
> > 4.1.1.  Receipt of Primitives from SCCP
> > 
> >    ...
> >    corresponding SCTP association.  If more than one ASP is in the
> ASP-
> >    ACTIVE state (i.e., traffic is to be load-shared across more than
> one
> >    ASP), one of the ASPs in the ASP_ACTIVE state is selected from
the
> >    list.  If the ASPs are in Broadcast Mode, all active ASPs will be
> >    selected and the message sent to each of the active ASPs.  The
> >    selection algorithm is implementation dependent but could, for
> >    example, be round robin or based on the SLS.  The appropriate
> >    selection algorithm must be chosen carefully as it is dependent
on
> >    application assumptions and understanding of the degree of state
> >    coordination between the ASP_ACTIVE ASPs in the AS.
> > 
> > These last to sentences are in conflict with the use of DRN/TID
label.
> > 
> > --brian
> > 
> > --
> > Brian F. G. Bidulock
> > [email protected]
> > http://www.openss7.org/
> 
> --
> Brian F. G. Bidulock
> [email protected]
> http://www.openss7.org/

--
Brian F. G. Bidulock
[email protected]
http://www.openss7.org/