Re: [Sigtran] question about m3UA

["Samuel Dur D. Jeyaseelan" <[e-mail]>]

Ling-Chih Kao,


On Wed, 20 Aug 2003, Ling-Chih Kao wrote:

>  Samuel
> 
> The example in sec. 5.1.4 and 5.2.3 is for "2+1" sparing loadsharing case.
> The original active ASP is ASP1 and ASP2. Later, ASP1 withdraws  and ASP3
> overrides it. ASP2 is still active; therefore, not all ASPs go into ASP
> inactive. Am I wrong?

You are correct. In section 5.2.3, SGP should not send NTFY(AS-PENDING) to
all ASP because ASP2 is alive(as you said).But SGP should send
NTFY(insuf-resources-at-AS) to INACTIVE-ASPes.

> 
> In  the example of sec. 5.1.4  for "2+1" sparing loadsharing case, the
> decision of  ASPs taking care traffic is still by a craft means via
> configured database. (In this example, ASP1 and ASP2 take care traffic
> first.)
> Or, depend on which ASP send ASP active to SGP first?

which ASP to send ASP-ACTIV to SGP first is also a part of database
configuration.

--Samuel
> 
> Thanks
> 
> Ling-Chih Kao
> 
> 
> ----- Original Message -----
> From: "Samuel Dur D. Jeyaseelan" <[e-mail]>
> To: "Ling-Chih Kao" <[e-mail]>
> Cc: "sigtran" <[e-mail]>
> Sent: Tuesday, August 19, 2003 7:58 PM
> Subject: Re: [Sigtran] question about m3UA
> 
> 
> >
> > Ling-Chih Kao,
> >
> > comments in-line.
> >
> > On Tue, 19 Aug 2003, Ling-Chih Kao wrote:
> >
> > > Hi, Samuel
> > >
> > > You mentioned that NTFY("AS-Pending") - sending this to all
> INACTIVE-ASPs is
> > > mandatory because any of the INACTIVE-ASP will become ACT.
> > > However, from the definition of M3UA Implementor's Guide, it said that
> > > "AS-PENDING: The last active ASP has transitioned from ASP-ACTIVE to
> > >    ASP-INACTIVE or ASP-DOWN.  A recovery timer T(r) SHOULD be started
> > >    and all incoming signalling messages SHOULD be queued by the SGP. If
> > >    an ASP becomes ASP-ACTIVE before T(r) expires, the AS is moved to the
> > >    AS-ACTIVE state and all the queued messages will be sent to the ASP".
> > >
> > > ASP3 overrides ASP1 when ASP1 want to withdraw (example in sec. 5.2.3
> (2+1
> > > redundancy model)).The AS still has an active ASP (ASP2). Why did SGP
> send
> > > NTFY("AS-Pending") to all ASPs? Are this wrong?
> >
> > NTFY(AS-Pending) is sent only when the final ACTIVE ASP goes down.
> > How do you say ASP2 is ACTIVE?
> >
> > >
> > > As mentioned in sec. 5.2.1 of  RFC 3332, how did SGP instruct which ASP
> > > should send ASP Active to SGP  when SGP M3UA layer detects the loss of
> the
> > > peer M3UA?
> > My understanding is , it is not the SGP which instructs which ASP to
> > come-up, but it is the craft person's local database configuration at
> > Application Server side.
> >
> > If SGP detects loss of peer M3UA layer (may be ASP1 does not respond with
> > heartbeat-ack)SGP will send a NTFY message to ASP2 so that ASP2 will
> > become ACTIVE.
> >
> > >
> > > As mentioned in sec. 5.2.2 of RFC 3332, What is the reason for ASP2 to
> > > override ASP1 ? How did ASP2 know to send ASP Active to SGP? When the
> model
> > > is 2+2 redundancy model, there are two backup ASPs, which ASP will
> override
> > > original ASP?
> >
> > What is the reason for ASP2 to override ASP1 ?
> > See, everything is controlled by a craft means via configured database.
> > Say for example, traffic is smooth between SGP1 and ASP1 but after some
> > time craft wants to do some kind of databse modification at ASP1 so he
> > make ASP2 to send the ASP-ACTIVE, Is this ok?
> >
> > All qtns are answered above with respect to local database configuration
> > at Application Server.
> >
> > > Ling-Chih Kao
> > >
> > > ----- Original Message -----
> > > From: "Samuel Dur D. Jeyaseelan" <[e-mail]>
> > > To: "Ling-Chih Kao" <[e-mail]>
> > > Cc: <[e-mail]>; "sigtran" <[e-mail]>
> > > Sent: Wednesday, August 13, 2003 5:18 PM
> > > Subject: Re: [Sigtran] question about m3UA
> > >
> > >
> > > >
> > > > Ling-Chih Kao,
> > > >
> > > > On Wed, 13 Aug 2003, Ling-Chih Kao wrote:
> > > >
> > > > > Hi, Samuel
> > > > >
> > > > > 1.
> > > > > ASP3  in Sec. 5.1.4 did not send ASP Act. to SGP; however,  it
> received
> > > > > NOTIFY (AS-ACTIVE).
> > > > >
> > > > > This NOTIFY is also optional whether ASP3 send ASP Act. to SGP or
> not.
> > > > > That's right ?
> > > > >
> > > > As per RFC it is mandatory.Basically NTFY has been used not only to
> > > > reflect the AS state but also used like 'insufficent # of ASPs' to all
> > > > INACTIVE ASPs.
> > > > NTFY(AS-ACTIVE) - sending this to all INACTIVE-ASPs is mandatory as
> per
> > > >                   RFC, But i dont see any purpose here.
> > > >
> > > > NTFY("Insuff # of ASPs) - sending this to all INACTIVE-ASPs is
> mandatory
> > > >                           because any of the INACTIVE-ASP will become
> ACT.
> > > >
> > > > NTFY("AS-Pending") - sending this to all INACTIVE-ASPs is mandatory
> > > >                      because any of the INACTIVE-ASP will become ACT.
> > > >
> > > > > Should ASP3 send  ASP Act. to SGP?
> > > > >
> > > > In our example(n+k case), if n=2 then 2 ASPs(say ASP1 and ASP2) will
> send
> > > > ASP-ACT messages.But you can have a test case where you will be
> sending
> > > > ASP-ACT from ASP3, this case SGP will honour that ASP-ACT.But
> basically
> > > > 'k' ASP is used for backup purpose so unless ASP1 or ASP2 goes down
> ASP3
> > > > will not be sending ASP3-ACT.
> > > >
> > > > > 2.
> > > > > Should ASP3 send  ASP UP to SGP?
> > > > >
> > > > Yes, because you make the backup ASP ready to a certain level so that
> > > > when any one of the ASCTIVE-ASP goes down, backup ASP will take
> minimum
> > > > time to take up the load.
> > > >
> > > > > If ASP3 did not sent ASP UP to SGP, reception of NOTIFY(AS-INACTIVE)
> is
> > > also
> > > > > optional. Or, ASP3 will not receive  NOTIFY(AS-INACTIVE) because
> ASP3
> > > does
> > > > > not sent ASP UP to SGP.
> > > > This already Brian has answered.NTFY will not be processed in DOWN
> state.
> > > >
> > > > --Samuel
> > > > >
> > > > >
> > > > > Ling-Chih Kao
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Samuel Dur D. Jeyaseelan" <[e-mail]>
> > > > > To: "Brian F. G. Bidulock" <[e-mail]>
> > > > > Cc: "Ling-Chih Kao" <[e-mail]>; "sigtran"
> <[e-mail]>
> > > > > Sent: Wednesday, August 13, 2003 12:27 PM
> > > > > Subject: Re: [Sigtran] question about m3UA
> > > > >
> > > > >
> > > > >
> > > > > Brian,
> > > > >  If it is mandatory to send NTFY(AS-STATE) to all ASPes(other than
> > > down),
> > > > >  Why dont we send SS7 node availability status(like
> DUNA,DAVA,DRST...)
> > > > >  to all INACTIVE-ASPes?(because anyway when INACTIVE-ASP moves to
> ACTIVE
> > > > >  ASP, it should know the status of SS7 nodes but finally it was
> decided
> > > > >  that newly active ASP will send an DAUD and gets the SS7 node(s)
> status
> > >
> > > > >  or SGP may send SS7 node(s) status to the newly active ASP.)
> > > > >  This i suggested long back(i think you remeber) but you strongly
> > > opposed
> > > > >  it. Now you are partially true with my old arguments.
> > > > >
> > > > > --Samuel
> > > > >
> > > > >   Alcatel USA, Inc.                  Internet:
> > > <userid>@ssd.usa.alcatel.com
> > > > >   1000 Coit Road, Plano, Texas 75075
> > > > >   ******* The opinions expressed are not those of Alcatel USA, Inc.
> > > *******
> > > > >
> > > > > On Tue, 12 Aug 2003, Brian F. G. Bidulock wrote:
> > > > >
> > > > > > Ling-Chih,
> > > > > >
> > > > > > Mandatory.  All ASP-INACTIVE ASPs for an AS receive notifications
> > > > > > of state change.  ASP3 is ASP-INACTIVE in this case and must
> receive
> > > > > > the notification.
> > > > > >
> > > > > > The contentious case is when an ASP (ASP3) becomes ASP-INACTIVE
> from
> > > > > > ASP-DOWN.  I believe that the SGP should notify the newly inactive
> > > > > > ASP of the current state of the AS (which it did not receive
> before).
> > > > > > Samuel thinks that they should somehow guess the state of the AS.
> > > > > >
> > > > > > --brian
> > > > > >
> > > > > > Ling-Chih Kao wrote:
> > > > > (Wed, 13 Aug 2003 08:55:25)
> > > > > > > Hi, Brian and Samuel
> > > > > > >
> > > > > > > The answer for both of you is different.
> > > > > > > See again in Sec. 5.1.4, the ASP3 is for backup. ASP3 did not
> sent
> > > ASP
> > > > > Act.
> > > > > > > to SGP. Why did it receive NOTIFY(AS-ACTIVE) ? This is optional
> or
> > > > > > > mandatory?
> > > > > > >
> > > > > > > Thanks
> > > > > > >
> > > > > > > Ling-Chih Kao
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > ----- Original Message -----
> > > > > > > From: "Samuel Dur D. Jeyaseelan" <[e-mail]>
> > > > > > > To: "Brian F. G. Bidulock" <[e-mail]>
> > > > > > > Cc: "Ling-Chih Kao" <[e-mail]>; "sigtran"
> > > <[e-mail]>
> > > > > > > Sent: Friday, August 08, 2003 6:08 PM
> > > > > > > Subject: Re: [Sigtran] question about m3UA
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Brian,
> > > > > > >  Huh, it is not an implementation dependent, rfc says
> > > > > > >  ASPs which are in that AS should coordinate among themselves
> the
> > > number
> > > > > > >  of active ASPs in the AS.So it is clear to SGP that first
> arrived
> > > > > > >  'n' ASPs will receive NTFY(AS-INACT) message.
> > > > > > >
> > > > > > >  If you want to send NTFY(AS-INACT) to all ASPes(other than DOWN
> > > state)
> > > > > > >  you are not restricted but it is not mandatory to send, thats
> what
> > > i
> > > > > > >  am saying from the beginning.
> > > > > > >
> > > > > > >  Keep IG as it is.
> > > > > > > --Samuel
> > > > > > >
> > > > > > >   Alcatel USA, Inc.                  Internet:
> > > > > <userid>@ssd.usa.alcatel.com
> > > > > > >   1000 Coit Road, Plano, Texas 75075
> > > > > > >   ******* The opinions expressed are not those of Alcatel USA,
> Inc.
> > > > > *******
> > > > > > >
> > > > > > > On Fri, 8 Aug 2003, Brian F. G. Bidulock wrote:
> > > > > > >
> > > > > > > > Samuel,
> > > > > > > >
> > > > > > > > Maybe clear to the ASPs depending on implementation, but not
> > > > > > > > clear to the SGP.  If the NTFY(AS-INACTIVE) is not going to be
> > > > > > > > used by any of the ASPs, why send it in the first place?
> > > > > > > > If it serves a purpose, it should be sent to all of them to
> avoid
> > > > > > > > the race condition.
> > > > > > > >
> > > > > > > > --brian
> > > > > > > >
> > > > > > > > Samuel Dur D. Jeyaseelan wrote:
> > > > > > > (Fri, 08 Aug 2003 04:36:50)
> > > > > > > > >
> > > > > > > > > Brian,
> > > > > > > > >  We all know that in n+k redundancy case that ASPes will
> > > coordinate
> > > > > > > > >  among themselves the number of active ASPs in the AS, here
> it
> > > is
> > > > > > > > >  clear that who is going to go to ACTIVE state then where is
> the
> > > > > > > > >  question of race condition?
> > > > > > > > >
> > > > > > > > > --Samuel
> > > > > > > > >
> > > > > > > > >   Alcatel USA, Inc.                  Internet:
> > > > > > > <userid>@ssd.usa.alcatel.com
> > > > > > > > >   1000 Coit Road, Plano, Texas 75075
> > > > > > > > >   ******* The opinions expressed are not those of Alcatel
> USA,
> > > Inc.
> > > > > > > *******
> > > > > > > > >
> > > > > > > > > On Fri, 8 Aug 2003, Brian F. G. Bidulock wrote:
> > > > > > > > >
> > > > > > > > > > Samuel,
> > > > > > > > > >
> > > > > > > > > > What if ASP1 and ASP3 receive it but ASP2 did not, just
> > > because
> > > > > > > > > > ASP3's ASPUP arrived before ASP2's.  That is a race
> condition.
> > > > > > > > > > This is why it is wise (and "SHOULD" is appropriate) to
> avoid
> > > > > > > > > > the race condition by sending NTFY(AS-INACTIVVE) to all of
> the
> > > > > > > > > > ASPs when they come up.  It should not be optional.  It is
> > > > > necessary
> > > > > > > > > > to proper interworking that this race be broken.
> > > > > > > > > >
> > > > > > > > > > --brian
> > > > > > > > > >
> > > > > > > > > > Samuel Dur D. Jeyaseelan wrote:
> > > > > > > (Fri, 08 Aug 2003 04:17:31)
> > > > > > > > > > >
> > > > > > > > > > > Brian,
> > > > > > > > > > >  Ok,say ASP1,ASP2 and ASP3 send ASP-UP message
> respectively,
> > > but
> > > > > > > ASP1 and
> > > > > > > > > > >  ASP2 received NTFY(AS-INACT) but ASP3 did not.
> > > > > > > > > > >  Now ASP1 sends ASP-ACT message then ASP3 sends ASP-ACT
> > > message,
> > > > > > > > > > >  here it is mandatory to send NTFY(AS-ACT) to both
> > > ASPes(ASP1
> > > > > and
> > > > > > > ASP3).
> > > > > > > > > > >
> > > > > > > > > > >  This is the reason i said it is an optional of sending
> > > > > > > NTFY(AS-INACT)
> > > > > > > > > > >  to 'n+1'th ASP.
> > > > > > > > > > >
> > > > > > > > > > > --Samuel
> > > > > > > > > > >
> > > > > > > > > > >   Alcatel USA, Inc.                  Internet:
> > > > > > > <userid>@ssd.usa.alcatel.com
> > > > > > > > > > >   1000 Coit Road, Plano, Texas 75075
> > > > > > > > > > >   ******* The opinions expressed are not those of
> Alcatel
> > > USA,
> > > > > Inc.
> > > > > > > *******
> > > > > > > > > > >
> > > > > > > > > > > On Fri, 8 Aug 2003, Brian F. G. Bidulock wrote:
> > > > > > > > > > >
> > > > > > > > > > > > Samuel,
> > > > > > > > > > > >
> > > > > > > > > > > > Yes, I have a problem, because it is a race condition.
> > > > > > > > > > > >
> > > > > > > > > > > > --brian
> > > > > > > > > > > >
> > > > > > > > > > > > Samuel Dur D. Jeyaseelan wrote:
> > > > > > > (Fri, 08 Aug 2003 04:04:50)
> > > > > > > > > > > > >
> > > > > > > > > > > > > Brian,
> > > > > > > > > > > > >
> > > > > > > > > > > > >   I meant first 2 ASPes will receive NTFY
> > > messages.Sending
> > > > > NTFY
> > > > > > > to
> > > > > > > > > > > > >   3rd ASP is an optional.Do you have any problem
> here?
> > > > > > > > > > > > >
> > > > > > > > > > > > > --Samuel
> > > > > > > > > > > > >
> > > > > > > > > > > > >   Alcatel USA, Inc.                  Internet:
> > > > > > > <userid>@ssd.usa.alcatel.com
> > > > > > > > > > > > >   1000 Coit Road, Plano, Texas 75075
> > > > > > > > > > > > >   ******* The opinions expressed are not those of
> > > Alcatel
> > > > > USA,
> > > > > > > Inc. *******
> > > > > > > > > > > > >
> > > > > > > > > > > > > On Fri, 8 Aug 2003, Brian F. G. Bidulock wrote:
> > > > > > > > > > > > >
> > > > > > > > > > > > > > Samuel,
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > None of the ASPs are handling traffic at that
> point.
> > > Who
> > > > > is
> > > > > > > to say
> > > > > > > > > > > > > > that ASP1 and ASP2 are the 'n' and ASP3 is the
> 'k'.
> > > > > Perhaps
> > > > > > > ASP2
> > > > > > > > > > > > > > and ASP3 are the 'n' and ASP1 is the 'k'.  The SGP
> > > surely
> > > > > > > doesn't know.
> > > > > > > > > > > > > > Sending NTFY(AS-INACTIVE) to all of them is the
> wisest
> > > > > choice.
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > --brian
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > Samuel Dur D. Jeyaseelan wrote:
> > > > > > > (Fri, 08 Aug 2003 03:47:30)
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > Ling-Chih Kao and Brian,
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > In n+k reduntancy case,when n=2 that means ASP1
> and
> > > ASP2
> > > > > are
> > > > > > > going to
> > > > > > > > > > > > > > > handle the traffic.So sending NTFY to these
> ASPes is
> > > > > > > mandatory.
> > > > > > > > > > > > > > > Sending NTFY to ASP3 is an optional because it
> is
> > > not
> > > > > going
> > > > > > > to handle
> > > > > > > > > > > > > > > the traffic.When ASP1 or ASP2 goes down then
> ASP3
> > > will
> > > > > come
> > > > > > > up to take
> > > > > > > > > > > > > > > over the traffic this case SGP will send a NTFY
> > > message
> > > > > with
> > > > > > > AS state,
> > > > > > > > > > > > > > > here it is mandatory to send NTFY to ASP3.
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > --Samuel
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > >   Alcatel USA, Inc.                  Internet:
> > > > > > > <userid>@ssd.usa.alcatel.com
> > > > > > > > > > > > > > >   1000 Coit Road, Plano, Texas 75075
> > > > > > > > > > > > > > >   ******* The opinions expressed are not those
> of
> > > > > Alcatel
> > > > > > > USA, Inc. *******
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > On Fri, 8 Aug 2003, Ling-Chih Kao wrote:
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > Dear Samuel Dur D. Jeyaseelan
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > From the new definition of AS-INACTIVE in sec
> > > 4.3.2 of
> > > > > > > > > > > > > > > >
> > > draft-ietf-sigtran-m3ua-implementors-guide-04.txt>,
> > > > > the AS
> > > > > > > becomes
> > > > > > > > > > > > > > > > AS-INACTIVE when there are at least n ASPs in
> > > either
> > > > > > > ASP-INACTIVE or
> > > > > > > > > > > > > > > > AS-ACTIVE.
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > Therefore, in sec. 5.1.4, AS becomes
> AS-INACTIVE
> > > when
> > > > > SGP
> > > > > > > receives two ASP
> > > > > > > > > > > > > > > > UP (from ASP1 and ASP2).  However, when the
> SGP
> > > > > receives
> > > > > > > ASP UP from ASP3,
> > > > > > > > > > > > > > > > SGP does not  send NOTIFY (AS-INACTIVE) to
> ASP3. I
> > > > > want to
> > > > > > > know whether it
> > > > > > > > > > > > > > > > is optional or not?
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > Thanks.
> > > > > > > > > > > > > > > > Ling-Chih Kao
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > ----- Original Message -----
> > > > > > > > > > > > > > > > From: "Samuel Dur D. Jeyaseelan"
> > > > > > > <[e-mail]>
> > > > > > > > > > > > > > > > To: "Ling-Chih Kao" <[e-mail]>
> > > > > > > > > > > > > > > > Cc: "sigtran" <[e-mail]>
> > > > > > > > > > > > > > > > Sent: Friday, August 08, 2003 3:41 PM
> > > > > > > > > > > > > > > > Subject: Re: [Sigtran] question about m3UA
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > Ling-Chih Kao,
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > NTFY(AS-INACT) is sent to all all available
> peer
> > > > > ASPes.
> > > > > > > > > > > > > > > > Note: Available peer means an ASP which
> received
> > > > > > > ASP-UP-ACK
> > > > > > > > > > > > > > > > in response to ASP-UP messages.(as per RFC
> section
> > > > > > > 4.3.4.1).
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > If you active the AS as soon as a single ASP
> goes
> > > to
> > > > > > > ASP-INACT
> > > > > > > > > > > > > > > > state then it is obvious that whoever sends
> ASP-UP
> > > > > message
> > > > > > > to
> > > > > > > > > > > > > > > > SGP, immediately SGP will send a
> NTFY(AS-INACT) to
> > > the
> > > > > > > concern
> > > > > > > > > > > > > > > > ASP followd by ASP-UP-ACK.
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > --Samuel
> > > > > > > > > > > > > > > >   Alcatel USA, Inc.                  Internet:
> > > > > > > <userid>@ssd.usa.alcatel.com
> > > > > > > > > > > > > > > >   1000 Coit Road, Plano, Texas 75075
> > > > > > > > > > > > > > > >   ******* The opinions expressed are not those
> of
> > > > > Alcatel
> > > > > > > USA, Inc. *******
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > On Fri, 8 Aug 2003, Ling-Chih Kao wrote:
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > Hi all,
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > After SGP receives the ASP UP from ASP1, SGP
> > > should
> > > > > > > immediately send
> > > > > > > > > > > > > > > > > NOTIFY(AS-INACTIVE)   to all ASP in the same
> AS.
> > > Is
> > > > > this
> > > > > > > right?
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > Thanks
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > Ling-Chih Kao
> > > > > > > > > > > > > > > > > ----- Original Message -----
> > > > > > > > > > > > > > > > > From: "Samuel Dur D. Jeyaseelan"
> > > > > > > <[e-mail]>
> > > > > > > > > > > > > > > > > To: "Brian F. G. Bidulock"
> > > <[e-mail]>
> > > > > > > > > > > > > > > > > Cc: <[e-mail]>; "Ling-Chih Kao"
> > > > > > > <[e-mail]>;
> > > > > > > > > > > > > > > > "sigtran"
> > > > > > > > > > > > > > > > > <[e-mail]>
> > > > > > > > > > > > > > > > > Sent: Tuesday, August 05, 2003 1:22 PM
> > > > > > > > > > > > > > > > > Subject: Re: [Sigtran] question about m3UA
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > Brian,
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > On Mon, 4 Aug 2003, Brian F. G. Bidulock
> wrote:
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > kakaul,
> > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > But I think that we agreed that it would
> be
> > > wise
> > > > > to
> > > > > > > tell newly inactive
> > > > > > > > > > > > > > > >
> > > > > > >   ------------------
> > > > > > > > > > > > > > > > > > ASPs that state of the AS.  Also, in the
> > > diagram,
> > > > > the
> > > > > > > state of the AS
> > > > > > > > > > > > > > > > >   -------------------------
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > What does ASP3 do with NOTIFY(AS-INACTIVE)?
> > > > > > > > > > > > > > > > > Whenever AS state-change happens at SGP, a
> NTFY
> > > will
> > > > > be
> > > > > > > sent to all ASPes
> > > > > > > > > > > > > > > > > (other than DOWN-ASPes) pertaining to the
> same
> > > RC
> > > > >
> > > >
> > >
> > >
> >
> >
> > _______________________________________________
> > Sigtran mailing list
> > [e-mail]
> > https://www1.ietf.org/mailman/listinfo/sigtran
> 
> 


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