RE: QDDIM Question

Well, there was a rare offer here: Andrea and I *both* said that we could
go along with any of these three alternatives.  But nobody took us up on
the offer!

Since I have to do something specific in QDDIM, I'm going to go with
Andrea's original suggestion, and add a DepthUnits property.

Regards,
Bob

Bob Moore
Advanced Design and Technology
Application Integration Middleware Division
IBM Software Group
+1-919-254-4436
[email protected]

----- Forwarded by Robert Moore/Raleigh/IBM on 05/30/02 12:39 PM -----
                                                                                                                                       
                      "Andrea                                                                                                          
                      Westerinen"              To:       Robert Moore/Raleigh/IBM@IBMUS                                                
                      <andreaw@cisco.          cc:       "Policy@Ietf. Org" <[email protected]>                                          
                      com>                     Subject:  [Policy] RE: QDDIM Question                                                   
                      Sent by: policy-                                                                                                 
                      [email protected]                                                                                                   
                                                                                                                                       
                                                                                                                                       
                      05/15/02 10:40 AM                                                                                                
                                                                                                                                       
                                                                                                                                       



I also could live with any of these, but we do have to pick one.  The
property is not quite usable, as is.
Andrea
      -----Original Message-----
      From: [email protected] [mailto:[email protected]]
      Sent: Wednesday, May 15, 2002 7:45 AM
      To: Andrea Westerinen
      Cc: Policy@Ietf. Org
      Subject: Re: QDDIM Question

      Well, you'd think so, wouldn't you? But then you wonder
      what it means for an instance of QueuingService to
      surface this one piece of state information to CIM in,
      say, bytes, while feeding queue-depth information to a
      RED dropper that has its thresholds specified in packets.
      Note that QDDIM says on page 15 that the job of modelling
      state has really not been done, and hence that this
      CurrentQueueDepth property is something of an anomaly.
      So maybe it's OK to have a queue that will only tell *us*
      its current depth in bytes, yet is perfectly willing to
      tell a dropper its current depth in packets.

      I see three choices we might make:

      - Remove the current depth property from QueuingService,
      and have it wait for the rest of the state model.
      - Pick a unit for it, either bytes or packets, and
      define it to always have that as its unit.
      - Add a units enum as you suggest.

      I could live with any of these.

      Regards,
      Bob

      Bob Moore
      Advanced Design and Technology
      Application Integration Middleware Division
      IBM Software Group
      +1-919-254-4436
      [email protected]

      "Andrea Westerinen" <[email protected]>

                                                                           
                                                                           
                               "Andrea                                     
                               Westerinen To: "Policy@Ietf. Org"           
                               "          <[email protected]>, Robert        
                               <andreaw@c Moore/Raleigh/IBM@IBMUS          
                               isco.com>  cc:                              
                                          Subject: QDDIM Question          
                                                                           
                               05/15/02                                    
                               10:16 AM                                    
                                                                           



      Don't you need a DepthUnits enum for QueuingService.CurrentQueueDepth
      as we
      have in the REDDropperService for the thresholds?

      Andrea