Would my 400 AP`s benefit from a static address ?

hi all
just wondering if ap`s would benefit from a static address range
presumably they collect the same address after lease expiry
now i need to find 10 new addresses for new non wireless equipment n order for the server team to have a nice continous address range , if i reboot the ap`s and their existing 10 addresses are taken will they pick up new addresses in that range (given that there is still 10 spare)
many thanks
Megz

thanks sabhasin,
i kinda guessed this was the case. if i static the ap`s then at least there fixed with permanent addresses.
is there any kind of risks accociated with ap`s on non statics i.e will a renewal create a blip or is it quicker than that.
how is the layer 3 lwapp working in this way.
great help so far btw ;)
Megz

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  • RE : Who would benefit from Forte?

    RE : Jerry Fatcheric's message about "Who would benefit from Forte?"
    With regards the point mentioned in the attached message from Jerry
    Fatcheric below, I would like to illustrate my point. I implemented in both
    Visual Basic and Delphi, the example that is mentioned in the attached
    message, about a browser application, having the capability to browse
    thousands of records with the inital screenful needing to come ASAP. It took
    me less than 2 minutes to implement this in VB (I timed it). Just threw a
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    About my background. I have worked about 8 years in application development
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    Being a consultant, I have used many tools, including FORTE for one year, to
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    data server. To the data server, having a physical middle tier between the
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    I still use FORTE can would continue to do so for some of the solutions that
    we develop, but I do not think that one shoud be using FORTE for "any
    development that is bigger than a breadbox" as Mr. Fatcheric suggests in the
    attached message, simply because if I do that, than I think that in some
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    - Ari Singh
    [email protected]
    Ari Singh wrote a provocative piece questioning the benefits of Forte
    in "Windows only", non-large scale applications. Rather than get into
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    NOT a Windows expert.
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    Jerry Fatcheric
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    201-301-0200
    201-301-00377 (FAX)
    [email protected]

    RE : Jerry Fatcheric's message about "Who would benefit from Forte?"
    With regards the point mentioned in the attached message from Jerry
    Fatcheric below, I would like to illustrate my point. I implemented in both
    Visual Basic and Delphi, the example that is mentioned in the attached
    message, about a browser application, having the capability to browse
    thousands of records with the inital screenful needing to come ASAP. It took
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    and wrote a "select *" sql specifying that only 30 records be returned at a
    time. For a table with 4K records, the first 30 came in and got displayed in
    less than 2 seconds. In Delphi, the response was even better and whole 4K of
    record could be retrieved in less than 4 second. (Yes less than 4 seconds
    for retrieving 4000 records from a DB2/NT database running on a remote
    machine). Even I could not believe the performance of Delphi which I haven't
    used that much. These tools are THE fastest way to get the data from a
    database server to a windows client. These will perform any day better than
    FORTE. One of the problem that I came across FORTE in one of situations like
    this was data movement across nodes is very costly. In one of our
    applications, since we stored the data as objects, in a similar situation as
    you have mentioned, the performance of moving a lot of data form the server
    to the client was not very good and in consulation with FORTE technical
    support we had to convert the data in objects to scalar (delimited string),
    move across node, and convert the data back to object at a client.
    Performance increase - 40 secs. vs 120 secs. earlier.
    About my background. I have worked about 8 years in application development
    and for the past 4 years have been working in a client server environment.
    Being a consultant, I have used many tools, including FORTE for one year, to
    provide my clients with the most bang for their buck, which to me is the
    topmost priority as a Consultant. I do not decide for my clients what
    technology they should use but sure evaluate the various options they have
    and recommend more than one solutions, listing the advantages and
    disadvantages.
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    in the future. The best solution that I could come up with was a logical
    3-tier with the presentation and the business layer running on NT
    workstation (client) and the database on NT server (server). With all the
    processing on a powerful and healthy (not "fat") client the system, I feel
    can scale very well. For a 500 user system, you literally have 500
    application server (physically on the client machine) being served by one
    data server. To the data server, having a physical middle tier between the
    client and the data server, I feel would not help, at least in our
    situation. Almost everything that the middle tier could do to reduce the
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    same failure points as a N-Tier solution unless you are replicating or
    duplicating the database. In our solution our application is as scaleable as
    the database is, and the databases available today are very scaleable if you
    look at the current database technology offerings.
    As you may have guessed the abovementioned solution is cheaper with a very
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    back and are in production for the past 1 month). This may not have all the
    features that FORTE offers, but for our purposes and I feel in similar
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    I still use FORTE can would continue to do so for some of the solutions that
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    attached message, simply because if I do that, than I think that in some
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    - Ari Singh
    [email protected]
    Ari Singh wrote a provocative piece questioning the benefits of Forte
    in "Windows only", non-large scale applications. Rather than get into
    a large philosopical discussion, I would like to illustrate my point
    with an example taken from a current Forte project.
    First, my background: 10+ years in Client server applications. Worked
    for several years at Oracle and have experience with Sybase. Worked
    extensively with a 2 tiered CS product (Uniface) and write C and C++.
    NOT a Windows expert.
    In our current application, the requirement is to allow the user to
    browse literally thousands of records on the Windows Client. There will
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    had the server pump the data to the client, we would have significant
    performance problems and face memory limitations on the PC. SO we
    utilized Forte's N-tiered capabilities. When the user starts a query
    (using dynamic sql with user controlled WHERE and ORDER BY), we start
    an asynchronous retrieval on the server with data is cached in an
    anchored object on the server. When the query has found the first
    THIRTY (30) records (2 screens worth), it posts an event to the client
    and the client request the first thirty. The retrieval process continues
    independently while the user can browse data on the client. Not until
    the user scrolls down far enough does the client again request more
    data. If the user quits from the screen or starts a new query, the
    first one is cancelled. Otherwise, the query runs to completion on the
    server.
    This approach gives us 3-5 second response time regardless of the size
    of the query result set. It minimizes the data on the client (moving
    us toward a thin client). The kicker is that with the help of Martha
    Lyman from Forte, we developed this technique in about 4 hours! Add
    to this all the standard inheritance, OO stuff, partitioning,
    customized monitoring, etc, etc, and IT IS MY OPINION that Forte
    is a GOOD tool for any development that is bigger than a breadbox
    and worth the $$$. And that's the way it is.... SO there...
    Jerry Fatcheric
    Relational Options, Inc.
    Florham Park, New Jersey
    201-301-0200
    201-301-00377 (FAX)
    [email protected]

  • FW: Who is FORTE for ? Who would benefit from FORTE?

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    From: [email protected][SMTP:[email protected]]
    Sent: Monday, August 12, 1996 10:03 PM
    To: [email protected]
    Subject: Who is FORTE for ? Who would benefit from FORTE ?
    Who is forte really for ? Who would benefit from FORTE ?
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    Also if your application is not for a large number of users (large,
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    I believe that in this case you do not need a middleware, you can
    have logical 3-tier (or n-tier) and deploy your application on
    physical 2-tier (client and server) with more than one logical tier
    running on one of the physical tier (client or server). Middleware,
    I believe, is not worth the cost, effort and time unless you
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    Agreed, but it depends on your needs and requirements. We
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    C++ and are looking at object broker middleware to allow all
    apps to share common objects. Our determination as to which
    language/environment to use is based on many factors, some of
    which you've already mentioned. Our servers are Vax OVMS, Alpha VMS,
    and Alpha NT. Our clients are PCs (NT 3.51, NT4.0, W95, W3.1) and Alpha NT.
    We had a couple of Macs but development and end user response was so
    painfully
    slow that they were replaced with far superior NT PCs (again, IMHO).
    PS- You may want to check out Forte' Express before you make adecision, especially
    if you are building DB apps with table editors/browsers. It is anexcellent rapid development
    tool, and teamed with Select Enterprise (for round trip Development<--> Documentation)
    it makes a great package._______________________________
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    Corning / CTE
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    http://fortefy.wilmington.net

    >
    Hi-
    You made some good points in your recent posting. I like Forte' but
    also see
    advantages to using other tools based on specific requirements. See my
    responses
    below.
    From: [email protected][SMTP:[email protected]]
    Sent: Monday, August 12, 1996 10:03 PM
    To: [email protected]
    Subject: Who is FORTE for ? Who would benefit from FORTE ?
    Who is forte really for ? Who would benefit from FORTE ?
    The main benefit of Forte' is the abilitity to develop on a particular
    platform and deploy to a multi-tier environment with platforms of any
    type.Specifically I am wondering if it makes a lot of sense for
    shops having all Microsoft Windows platform - both for client and
    server to gain from FORTE.
    IMHO, Forte' may not be the ideal solution in that kind of
    environment. Although, it would work fine, there are plenty
    of windows based tools and apps that would work fine and
    probably faster and cleaner.I think that there are so many easy-to-use and economical tool
    which can do RAD and give decent client-server performance on
    Microsoft Windows platform costing much less than a FORTE solution.
    I agree. Forte' is expensive and would be overkill if you just needed
    a C++ app using ODBC going against a small local database.And with these solutions you can easily put your data server on a
    Unix box and access it seamlessly on Windows platform without
    any extra tools (almost all popular databases come with
    this database connectivity built-in).
    Correct, as long as you don't need to put business logic
    on the same server as well. You add a lot of complexity
    going to multi-tier but add the advantage of load balancing
    and failover.What I think is unless you have run your application (or at least
    a piece of your application) on operating systems like Unix or DEC
    or unless if you have different platforms in your organization to
    deploy your application on, there is not much you'll gain from FORTE.
    I like Forte', but I have to agree with you. In a straight Windows 95/NT
    environment with a Unix database server, I'd go with something like
    MS Viz C++ and MS Access or Oracle. Forte' offers a lot for the multi-
    platform environment but does have a fairly steep learning curve,
    especially
    when it comes to the system admin piece. And initially, your system will
    need a lot of hand holding till all the pieces fit. The lack of CM,
    object persistence,
    use of their proprietary object broker etc are things that they'll
    need to address
    in upcoming releases to remain competitive.Also if your application is not for a large number of users (large,
    I think is 200+ user), you gain little from your investment in FORTE.
    I believe that in this case you do not need a middleware, you can
    have logical 3-tier (or n-tier) and deploy your application on
    physical 2-tier (client and server) with more than one logical tier
    running on one of the physical tier (client or server). Middleware,
    I believe, is not worth the cost, effort and time unless you
    absolutely need it.
    Agreed, but it depends on your needs and requirements. We
    at Corning, are developing some apps in Forte' and some in
    C++ and are looking at object broker middleware to allow all
    apps to share common objects. Our determination as to which
    language/environment to use is based on many factors, some of
    which you've already mentioned. Our servers are Vax OVMS, Alpha VMS,
    and Alpha NT. Our clients are PCs (NT 3.51, NT4.0, W95, W3.1) and
    Alpha NT.
    We had a couple of Macs but development and end user response was so
    painfully
    slow that they were replaced with far superior NT PCs (again, IMHO).
    PS- You may want to check out Forte' Express before you make a
    decision, especially
    if you are building DB apps with table editors/browsers. It is an
    excellent rapid development
    tool, and teamed with Select Enterprise (for round trip Development
    <--> Documentation)
    it makes a great package._______________________________
    Jeff Austin
    Corning / CTE
    [email protected]
    http://fortefy.wilmington.net

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    So that fixed the major heat problem. However, the question remained, would I see any further improvements by stripping the thing down and reapplying the heatsink paste? What I was looking for in this forum was a rule of thumb based on temperature measurements to help me make an informed decision on whether to strip the thing down. As my machine was out of warranty, I wasn't worried about voiding that. Also, where I am there is zero support (Africa), so Genius Bar or similar was not an option. But jiggering a 14month (very expensive) laptop was not something I wanted to do for thrills. The data in many of the posts did not provide any answers. In the end I made some measurements and decided to do the fix. The step by step instructions I followed were very clear and can be found for many Macs/models at:
    http://www.ifixit.com/Device/Mac
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    Note all temperatures were measured at an ambient temperature of 20C on a flat, hard surface using Marcel Bresink's Temperature Monitor. Fan speed was measured using the Fan Control software - set to allow firmware control at idle.
    Apple original heat sink paste - big dollop of grey crud and lots of extrusion at the sides.
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    GPU 38C
    Heat Sink 2 36C
    Heat Sink 3 35C
    Fan Speeds 2000rpm
    Full Load (all cores maxed with a Boinc Distributed Computing Project (Rosetta - the project, not the Apple technology).
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    GPU 57C
    Heat Sink 2 52C
    Heat Sink 3 49C
    Fan Speeds 6200rpm
    Arctic Silver heat sink paste
    Idle
    CPU 38C
    GPU 34C
    Heat Sink 2 33C
    Heat Sink 3 32C
    Fan Speeds 2000rpm
    Full Load
    CPU 86C
    GPU 59C
    Heat Sink 2 50C
    Heat Sink 3 50C
    Fan Speeds 6200rpm
    Back to my original question: How do I know if my MBP will benefit from reapplication of the heatsink compound? I think temperatures alone will not give a good answer - mainly because the CPU probably has variable output - due to turbo boost. One thing I did notice is that the temperature response of the CPU when it gets switched to full load, does vary according to the quality of the heatsink paste. With the original Apple paste, when I switched the CPU to full load (from idle) the temperature of the CPU went up to its maximum almost instantaneously and stayed at that level ie the graph of temperature vs time was a step function. This suggests that the CPU may be controlling the temperature by throttling itself. Otherwise, as the heatsink warmed up, the CPU should also rise in temperature - mine stayed bang on 90C and fluctuated only by a degree either side.  After application of heat sink paste, the CPU has a much larger effective thermal mass and consequently heats up much more slowly. Turning the CPU up to maximum from idle resulted in the temperature climbing to a maximum over about 3-4s. After peaking at around 92C it dropped back as the fans kicked in, to around 86C.
    So perhaps one way of assessing the quality of your heatsink paste is to ramp the CPU to maximum from idle and look at the shape of the temperature profile. A step function suggests a lousy job and benefit may be had from reapplication. A more gently sloping profile, followed by a dip due to the fans kicking in, may suggest you are in good shape. Obviously, this presupposes that your Mac temperatures are not insanely hot to start with (i.e. high 90sC+). In which case, if defluffing doesn't do the job, then new heatsink paste is almost certainly required.
    Regards, BB

    I'm sorry but this is too funny to pass up. 

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