RE: Asynchronous Message: Session Termination

["BURBRIDGE,MATTHEW (HP-UnitedKingdom,ex2)" <matthew_burbridge@hp.com>]

Mark,

The last description is good and covers all situation.  Presumably, if
Parameter3 is zero then the initiator is able to establish a new session
immediately.  Can you modify the description to specify that Parameter3 must
be greater than or equal to Parameter2 (it makes no sense to have a value
less than Parameter2) and that zero is a valid value for Parameter3.

Matthew


-----Original Message-----
From: Mark Bakke [mailto:mbakke@cisco.com]
Sent: Wednesday, May 23, 2001 4:17 PM
To: BURBRIDGE,MATTHEW (HP-UnitedKingdom,ex2)
Cc: ips@ece.cmu.edu
Subject: Re: Asynchronous Message: Session Termination


Matthew-

The intent of these was not to connect and re-establish the same
session after a set amount of time; it was to inform the initiator
not to try to establish a new session until the time passes, which
is I think what you want.  Perhaps changing the description of
#4 from:

      4    Target indicates it will/has dropped all connections - the 
      Parameter2 field indicates, in seconds, the minimum time to 
      reconnect and Parameter3 the maximum time to reconnect.

to:

      4    Target indicates it will/has dropped all connections - the 
      Parameter2 field indicates, in seconds, the minimum time to 
      wait to establish a new session and Parameter3 the maximum
      time to wait to establish a new session.

Actually, I had originally requested this, to allow a target to say
"I'm shutting down / failing over in X seconds; and will be back again
in Y seconds, so don't bother connecting until then".  With this
behavior, the description should read:

      4    Target indicates it will/has dropped all connections - the 
      Parameter2 field indicates, in seconds, the time until all
      connections will be terminated (or zero if immediately), and
      Parameter3 the maximum time the initiator should wait before
      attempting to establish a new session.

If everyone agrees with this, I would rather have the above description.

--
Mark

"BURBRIDGE,MATTHEW (HP-UnitedKingdom,ex2)" wrote:
> 
> Hi Julian,
> 
> If a target only supports Session Recovery, then when an error is detected
> it will terminate the session.  The current Async Message (iSCSI Event
> "Target indicates that his will/has dropped all connections") does not
> necessary inform the initiator that the session has terminated and the
> initiator is quite within rights to establish a new connection and attempt
> With-in Session recovery.
> 
> Can you change the spec to reflect that a value of zero in both the
> Parameter2 and Parameter3 would set the maximum time to reconnect to
"Never"
> thereby informing the initiator that the session has closed?
> 
> Thanks
> 
> Matthew Burbridge
> NIS-Bristol
> Hewlett Packard
> Telnet: 312 7010
> E-mail: matthewb@bri.hp.com

-- 
Mark A. Bakke
Cisco Systems
mbakke@cisco.com
763.398.1054