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Bandwidth Problems

What is bandwidth

Bandwidth refers to the data transfer rate within a band of frequencies or wavelengths in a computer network. In other words, it is mainly the volume of data per second an internet connection can handle. The speed/rate of bandwidth is gauged in terms of bits per second (bps). An internet connection with a larger bandwidth can move/download/share larger amount of data in less time than an internet connection with a relatively lower bandwidth. System or network failure and a significant drop in the signal strength can hamper the bandwidth rate. Bandwidth rate/speed provided by the internet service provider can be checked by running a test against a close by server by logging in to www.speedtest.net. Listed below are some relevant answers provided by Experts on bandwidth and its related problems

I need larger bandwidth. What should I opt between switched network and hub network?

A switched network provides more bandwidth as it is capable of sending or receiving information at the same time. Whereas a hub network just acts like a repeater and cannot send or receive data at the same time. Another reason of switched network’s efficiency is that it identifies the intended recipient/computers of the data it receives/transmits. Whereas, a hub network slows down the bandwidth speed as it does not recognize the intended destination of the data it receives and ends up sending it to all the computers connected to its network, thus leading to the network congestion. So, it is usually better to go for a switched network for larger bandwidth.

What are the best routers that can increase the bandwidth of my internet connection?

Basically, it all depends on the speed at which it comes from the internet service providers and personal choice. However, you can opt for some high end routers like N300 or N600 from Netgear which would increase the bandwidth reach up to 150 to 200 feet. Or you can also look for routers of other brands identified as ‘802.11b’ or ‘802/11g’ category. In addition to this, you can always check your network adapter in your computer in another network if you experience a significant fall in your bandwidth. Finding the best router is often a choice or a preference.

How do I restrict the bandwidth usage for the guest network using my Apple Airport Extreme Router? I have Comcast Cable broadband connection with a 20MB down and 500kb up speed.

With an apple airport extreme router, you cannot do the multicast rate setting as it would affect the entire base station instead of a particular network; in your case it is the guest network. To deal with this, you can set the specific channel used by the guest network to "b" only or "g" only or "n" only (2.4GHz) or a "b/g" network. This procedure will limit the bandwidth usage in the guest network to some extent. However, to have full control over bandwidth allocation to several networks, you should go for routers like E3200 or E4200 of Linksys.

How to calculate the bandwidth requirement for an hour long live event which is streamed over internet with an encoding rate of 22 kbps for 1500 total and 1200 concurrent listeners?

In this case, the encoding rate of 22kbps is the bandwidth rate which a single stream needs. To calculate the required kilobits of bandwidth in this case, you have to multiply that with the number of concurrent listeners. Then divide the result (kbps) by 1000 to convert the same into mbps.

How to limit the bandwidth to a computer connected wirelessly as it slows down the speed and I am not able to get right speed when that particular computer is in use. The router in use is a WRT 54GL v1.1 Linksys.

Most probably, the other computer is used to download applications or games of high volume and that is why is slows down the bandwidth to your computer. To resolve this issue, you have to have both the MAC addresses; the target computer and your computer. Then log into the router webpage (http://192.168.1.1/) using your computer. Go to the ‘status’ tab and select ‘local network’. Now click on the button to view Dynamic Host Configuration Protocol (DHCP) lease to find out the target computer’s name from where you can extract its MAC address. The next step is to enable the Quality of Service (QoS) by clicking on ‘application and gaming tab’. Then set your MAC address as high priority and the other one as low priority and save the changes. Next time onwards, your computer will have greater bandwidth.

Bandwidth rate/speed always depends on the internet service provider. You have to have larger bandwidth to share/download/stream files of higher volumes at a faster rate. Any other software or devices like router and firewalls etc between the modem and your computer could slow down the bandwidth. This apart, multiple computers downloading large files also eat up the bandwidth. However, one should always seek an Expert’s advice to handle such issues.
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Recent Bandwidth Questions

  • For Steve Herrod only: This is an individual project.

    For Steve Herrod only:
    This is an individual project. This project is related to the Case Study project. Each student must complete an Architectural Diagram that illustrates the placement of security and other technologies within the converged network solution. The foundation for this project is the requirements analysis and proposal document that you completed for the Case Study project. The target audience will be the organization’s Chief Information Officer (CIO). The Architectural Diagram deliverable is an MS Word document.
    Company Overview
    Universal Transport, Inc. (UTI) is a global logistics provider that offers fully integrated freight and supply chain services through managed warehousing and domestic and international freight forwarding. Services range from door-to-door domestic and international delivery services to total supply chain management. With branches across the United States and Europe and partners worldwide, UTI continues to expand, and it has experienced rapid growth through acquisitions.
    The Business Challenge
    UTI is competing in an environment where freight transport is as much about keeping customers informed as it is about on-time delivery. The company has adopted web- based technologies for tracking freight, differentiating its services, keeping customers informed, and ensuring the on-time delivery that is UTI's hallmark. As a result, UTI enjoys a very high level of customer satisfaction.
    Its mobile workforce has rapidly increased, with drivers using PDAs to scan consignments, which are then synced in real time via GPRS links to headquarters applications that track the consignments. Customers use UTI’s web services to view the progress of orders, from dispatch to warehousing to final delivery. Customers also use UTI’s web-based systems to create freight documentation and generate reports. With the EDI interface, invoices and payments are transferred directly between the customers' systems and UTI, saving both time and money.
    As the company has expanded, the data flowing in the system have increased as well. Now, with more than 5,000 employees and thousands of customers worldwide, UTI is suffering from the effects of explosive growth. Demands on its wide area network (WAN) are exceeding capacity. The main data center has experienced several network outages and unscheduled downtime. The aging ISDN telephone system is failing, as the company has avoided the costly upgrades necessary to keep it operating at optimal performance. Telephone bills have increased without warning, and the voice mail system is overloaded.
    The Opportunity
    UTI wants to provide increased bandwidth between all 47 of its US offices and the main data center located in Chicago. There are three regional business centers that have four to eight satellite locations that need to able communicate and exchange data daily. These are located in Chicago, Kansas City, and Tampa. The company desires a reliable and secure network to accommodate its planned growth without exceeding 85% of capacity.
    The company does not want to spend any more on telephone services than it does today, and its goal is to upgrade the services while protecting against escalating costs from its ISDN service provider.
    Efficiency and productivity goals for this rapidly growing company are of paramount importance, and there is a desire to provide capabilities and services that incorporate technology solutions to improve in those areas as well as retain the high level of customer satisfaction. UTI is also interested in reducing travel between its sites by implementing video conferencing.
    In addition, UTI wants to be able to monitor and manage data and voice services, and ensure that capacity and performance is consistent with its business needs.
    The Deliverable
    For this assignment, you will use your proposed solution for the UTI requirements analysis. Briefly describe the proposed technology solution and list the business requirements (including security requirements) that are satisfied. This should be done on one (1) page. Then provide a diagram that illustrates the placement of various communications components within the context of developing an effective, efficient, security posture for the proposed solution for TUI's converged network.
    Your deliverable will be one document that includes a 1-page business requirements summary and an architectural drawing. Your deliverable will be scored according to the scoring rubric below. Successful documents use the bolded rubric attributes as major section headings. Be sure you have incorporated all required aspects of the assignment.
  • Introduction This is an individual project. Each student must

    Introduction
    This is an individual project. Each student must complete a Case Study that provides the requirements analysis and a proposed solution for converged network solution. The target audience will be the organization’s Chief Information Officer (CIO). The Case Study deliverable is an MS Word document.
    The completed Case Study deliverable is due by 11:59 PM Eastern Time on the due date shown in the Course Schedule. See the Additional Information section of the syllabus for the penalty for late or missed assignments and projects.
    The Case Study is valued at 12% of the course grade.
    Case Study
    Company Overview
    Universal Transport, Inc. (UTI) is a global logistics provider that offers fully integrated freight and supply chain services through managed warehousing and domestic and international freight forwarding. Services range from door-to-door domestic and international delivery services to total supply chain management. With branches across the United States and Europe and partners worldwide, UTI continues to expand, and it has experienced rapid growth through acquisitions.
    Note: The term supply chain refers to all the elements involved in bringing an organization's products from the raw-goods stage to the customer.
    The Association for Operations Management (APICS) dictionary ((http://www.apics.org/Resources/APICSDictionary.htm) defines “supply chain management (SCM)” as the design, planning, execution, control, and monitoring of supply chain activities with the objective of creating net value, building a competitive infrastructure, leveraging worldwide logistics, synchronizing supply with demand and measuring performance globally.
    The Business Challenge
    UTI is competing in an environment where freight transport is as much about keeping customers informed as it is about on-time delivery. The company has adopted web- based technologies for tracking freight, differentiating its services, keeping customers informed, and ensuring the on-time delivery that is UTI's hallmark. As a result, UTI enjoys a very high level of customer satisfaction.
    Its mobile workforce has rapidly increased, with drivers using PDAs to scan consignments, which are then synced in real time via GPRS links to headquarters applications that track the consignments. Customers use UTI’s web services to view the progress of orders, from dispatch to warehousing to final delivery. Customers also use UTI’s web-based systems to create freight documentation and generate reports. With the EDI interface, invoices and payments are transferred directly between the customers' systems and UTI, saving both time and money.
    As the company has expanded, the data flowing in the system have increased as well. Now, with more than 5,000 employees and thousands of customers worldwide, UTI is suffering from the effects of explosive growth. Demands on its wide area network (WAN) are exceeding capacity. The main data center has experienced several network outages and unscheduled downtime. The aging ISDN telephone system is failing, as the company has avoided the costly upgrades necessary to keep it operating at optimal performance. Telephone bills have increased without warning, and the voice mail system is overloaded.
    The Opportunity
    UTI wants to provide increased bandwidth between all 47 of its US offices and the main data center located in Chicago. There are three regional business centers that have four to eight satellite locations that need to able communicate and exchange data daily. These are located in Chicago, Kansas City, and Tampa. The company desires a reliable and secure network to accommodate its planned growth without exceeding 85% of capacity.
    The company does not want to spend any more on telephone services than it does today, and its goal is to upgrade the services while protecting against escalating costs from its ISDN service provider.
    Efficiency and productivity goals for this rapidly growing company are of paramount importance, and there is a desire to provide capabilities and services that incorporate technology solutions to improve in those areas as well as retain the high level of customer satisfaction. UTI is also interested in reducing travel between its sites by implementing video conferencing.
    In addition, UTI wants to be able to monitor and manage data and voice services, and ensure that capacity and performance is consistent with its business needs.
    The Deliverable
    Using this case study, you are to identify a minimum of five requirements, analyze them, and offer a proposal that provides UTI with an converged network solution and explains how the components of the solution, and the solution as a whole, meet the identified requirements. The proposed solution must address each of the requirements identified. At least one (1) diagram or illustration must be incorporated to illustrate your proposed solution. You should do some research to address the cost issues and defend the proposed solution from a cost-bene
  • Im just looking for weeks 1-2 right now (phase1) is this something

    Im just looking for weeks 1-2 right now (phase1) is this something you think you could do, I don't need it till next sun the 18th
    Assignment Background Information
    DeVry University has decided to enhance security by installing high-definition IP cameras throughout its campus network. After evaluating different products, the Cisco 4300 Video Surveillance camera was chosen as DeVry’s standard.
    DeVry recognizes that the additional camera traffic, along with its management, will require a major upgrade to the network infrastructure. A phased project was created to enable NETW206 students to design and implement the network infrastructure within a single session. The four project phases are:
    1. Phase 1 (Weeks 1 - 2): Design Network Switching Infrastructure
    2. Phase 2 (Week 3): Standardize Network Configurations
    3. Phase 3 (Week 5): Network Assessment
    4. Phase 4 (Week 7): Extending the Network
    Phase 1 Assignment
    As the network engineer, you have been asked to design the new network switching infrastructure that fully supports both the existing data traffic and the additional camera traffic according to the following requirements.
    Design Requirements
    Your network design should address each of the following requirements:
    1. Must comply with the Cisco hierarchical design model;
    2. Must provide physical, as well as logical, redundancy;
    3. Must integrate 1Gb or higher uplinks;
    4. Must segment camera IP traffic from the existing network for security reasons;
    5. Must support a minimum of 150 cameras and provide connectivity for 120 existing users, printers and servers that will be segmented into 4 departments/workgroups. Plan for 20% future expansion;
    6. Must utilize PoE for cameras to avoid the use of power bricks or power injectors;
    7. Must provide sufficient bandwidth for full HD support and support existing data usage;
    8. Must minimize rack space.
    You are required to prepare a detailed network report with network topology diagram for your manager at the next scheduled meeting.
    Your report should:
    1. Thoroughly describe how your network design supports each of the requirements above to enable DeVry to take full advantage of the Cisco 4300 IP cameras.
    2. Describe how your switch selections satisfy the bandwidth requirements.
    3. A rudimentary topology diagram showing the distribution of users and cameras at the access layer. You don’t need to place an icon for every device in your diagram. Merely indicate the number of devices attached to each switch. As you progress through the course and become more familiar with the detailed operation of switching devices you may need to make modifications to your design. Do not be overly concerned with being absolutely precise at this point.
    4. Indicate your choice of distribution layer and core layer devices. Do the best you can in justifying your device selections. Again, you made need to tweak you choices in the coming weeks.
    The following websites are available to assist in your research and design for this project. The first link below is an excellent article that discusses the design and implementation of a campus wide network in explicit detail. I highly recommend it!
    The second link is the data sheet for the required cameras. It will provide you with all of the information that you will need to integrate the cameras into your network.
    The third link will provide information pertaining to bandwidth usage by the cameras.
    Remember, there is no single correct solution to this assignment.
    Design: www.cisco.com/en/US/docs/solutions/Enterprise/Campus/HA_campus_DG/hacampusdg.html
    Camera: www.cisco.com/en/US/prod/collateral/vpndevc/ps6918/ps9692/ps9716/data_sheet_c78-492032.html
    Video Bandwidth: http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/IPVS/IPVS_DG/IPVSchap4.html
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