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Adopting A Business-Oriented Approach To Bandwidth Management.


The first challenge lies in understanding all of the factors that contribute to a user's perception of the service levels they are receiving. With the exponential growth Extremely fast growth. On a chart, the line curves up rather than being straight. Contrast with linear.  of content-rich applications and Internet Internet

 computing computing - computer  demands, users often perceive that there is insufficient bandwidth available to completely satisfy the needs of the business. Users measure bandwidth in terms of the response times they experience. While related, however, response times are not an accurate measurement of bandwidth and capacity. Many networks where users experience slow response times actually have more than enough total bandwidth; the bottleneck A lessening of throughput. It often refers to networks that are overloaded, which is caused by the inability of the hardware and transmission lines to support the traffic. It can also refer to a mismatch inside the computer where slower-speed peripheral buses and devices prevent the CPU  may well be caused by another component such as a server, an application, storage device or the user's own PC.

The first stage of bandwidth management Controlling the traffic flow in a network. See bandwidth manager. , then, is to accurately measure the service levels being provided--from the users' standpoint The Standpoint is a newspaper published in the British Virgin Islands. It was originally published under the name Pennysaver, largely as a shopping-coupon promotional newspaper, but since emerged as one of the most influential sources of journalism in the . The enterprise network management system is effective in collecting performance data for any given device, but in order to make any informed decision regarding the adequacy of the service levels delivered, this raw data must be rolled up and interpreted in terms of business metrics metrics Managed care A popular term for standards by which the quality of a product, service, or outcome of a particular form of Pt management is evaluated. See TQM.  as experienced by each user. While calculating service levels manually is very time-consuming, there is a new generation of software tools now available to help the IT executive assess and track actual service levels according to according to

2. In keeping with: according to instructions.


How Much Bandwidth Is Enough?


Managing Bandwidth


* Identify current bottlenecks

* Provide increased capacity to meet current demands

* Project the historical demand levels into the future requirement


* Eliminate or downsize Downsize



It is sometimes referred to as trimming the fat.
 any costly, underutilized facilities to reduce waste




Bi-Directional Data Links And Circuits

A data link provides a connection between two or more computers. A circuit is a virtualized data link. It is important to note that most communication systems are highly layered and what appears to be a link to one person may be considered a circuit by another. From a capacity planning Determining the required future configuration of hardware and software for a network, datacenter or Web site. There are numerous capacity planning tools on the market used to monitor and analyze the performance of the current hardware and software.  point of view, all such connections are considered links.

1. denoting a chemical compound that has only single bonds and no double or triple bonds between atoms.

2. unable to hold in solution any more of a given substance.

The nominal capacity of a full-duplex link is really the capacity of each facility. For example, 20Mbps can be transferred over a full-duplex Ethernet An extension to 10Base-T Ethernet implemented in a switched environment that has a dedicated line between the station and switch. It is built into the network adapter (NIC) and switch, providing bi-directional transmission that boosts bandwidth from 10 to 20 Mbps.  (10Mbps) link. If this is not taken into consideration, it can seriously distort any capacity planning activities.

How Busy Is It?

saturation, of an organic compound, condition occurring when its molecules contain no double or triple bonds and thus cannot undergo addition reactions.

cruising speed nvitesse f de croisière

cruising speed cruise n



v. t. 1. To frame again or anew.

After measuring the activity levels of a facility for a period of time, a pattern can be detected in the peak-hour load trending. The peak-hour load is much easier to project than the raw load because it consolidates all the samples for a day into a single metric and smoothes many of the perturbations. Peak-hour load should not be used directly for projections, however, because of business-cycle considerations such as weekends, month-end-closings, and so forth. High and low samples should consequently be removed from consideration and projection should be made based on the midrange midrange Epidemiology The halfway point or midpoint in a set of observations; for most data, MR is calculated as the sum of the smallest observation and the largest observation, divided by 2; for age data, one is added to the numerator; a midrange is usually  of peak-hour load samples. By using this method, peak-hour load is projected over various periods to determine a projected saturation date--which should, then, be compared with the service-cycle time for the given facility. How long does it take to perform an upgrade? Remedial action A remedial action is a change made to a nonconforming product or service to address the deficiency.



A negative change in the rating of a security.

For example, an analyst may downgrade a stock from strong buy to buy, or a bond rating agency may downgrade a bond from AAA to AA.
 threshold should be considered a candidate for downsizing (1) Converting mainframe and mini-based systems to client/server LANs.


(jargon) downsizing
 or removal. The downgrade threshold can be set to indicate the level at which the next lower increment To add a number to another number. Incrementing a counter means adding 1 to its current value.  of capacity becomes more economical or at which the facility should be eliminated or redeployed.

Balancing Demand


Demand balancing can be achieved in many ways, most of which affect the work-process and procedures within the organization (Fig 2). Examples include rescheduling batch jobs Same as batch program. , deferring data entry, staggering work shifts, or placing usage restrictions on individuals during peak usage times. Once the demand on a facility is balanced, the peak-hour load should be significantly reduced, allowing for the possibility of significantly reduced costs by eliminating, downsizing, or deferring the upgrade of the facility.

Determining the balance factor is the most difficult of the capacity-planning activities and requires information on the daily-usage pattern of the facility, the business activities of the organization, and the ability to institute organizational change. It is, however, an important part of the process. During this step, a highly effective integrator (1) In electronics, a device that combines an input with a variable, such as time, and provides an analog output; for example, a watt-hour meter.

(2) See systems integrator.
 can produce significant savings for the organization while increasing infrastructure responsiveness.

Peter Cruz is the director of product planning Product Planning is the ongoing process of identifying and articulating market requirements that define a product’s feature set. See also
  • Market requirement
  • Product management
  • Product Manager
                    Six ways to plan bandwidth capacity
                     Managing Bandwidth: Steps to Take
6 Balance demand across time in order
  to more efficiently use available capacity
5 Eliminate of downsize any costly,
  underutilized facilities to reduce waste
4 Put plans in place to supplement current
  capacity before future bottlenecks occur
3 Project the historical demand levels
  into the future requirement
2 Provide increased capacity to
  meet current demands
1 Identify current bottlenecks
COPYRIGHT 2000 West World Productions, Inc.

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Title Annotation:Technology Information
Author:Cruz, Peter
Publication:Computer Technology Review
Geographic Code:1USA
Date:Mar 1, 2000
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