Slow Network Analysis Paper
Slow Network Analysis Paper
NTC 406
July 14th, 2014
James Parks
Slow Network Analysis Paper
Increase in number of users:
In 1993 there were 14 million users in 2014 there is almost three billion users. The network constituting of interconnected set of computers in a small, limited area such as office buildings, universities, homes etc. is said to be a Local Area Network (LAN). Performance of a LAN refers to the average speed of the network. There are many ways to measure the performance of the network. With the increase in the number of users the performance of the network could come down drastically. This is due to heavy user of the network and the internet, which will make connections slower. For example, I have a 14 year old and a 4 year old who like to play Mind Craft online along with some other online games. The internet we have is only 3.5mbs and when both of them are on playing, I have a hard time getting to my online school to do homework because they are both using up all the bandwidth.
Increase in network nodes:
A local area network consist of a collection of nodes (computers) or devices connected to the network. Switches, routers, modems, and hubs is considered a network node. Increases in the number of nodes, which …show more content…
has an increase in cost, also raises the amount of network traffic, this all leads to delay and performance issues with the network, like the network being slow or a delay in web pages loading. When packets are sent out across the network these packets have to hop from one node to the next until it reaches its final destination, the fewer computers and devices the shorter the hobs and a shorter path.
Use of peer-to-peer network:
Computers in a network which is equally privileged and can communicate with another computer as long as it has the rights, is known as peer-to-peer network. This is called client and server, this could range from just a few computer to hundreds of devices, systems, and anything connected to the network in which it communicates. With the increase of the number of computers, performance will decrease and the network will be slow.
Streaming Video:
Streaming video across the network will put a strain on the network, as the major part of the bandwidth will be consumed, which will greatly reduce the networks speed and decrease its efficiency. Video for streaming is compressed so it can be sent out on the network and use very little kbs, but if you are to watch a HD video, the bandwidth need will be higher. The recommended bandwidth for an SD (Standard Definition) movie is 2.5mbs, HD (High Def) will require more. So if one is on 3.5mbs like I am, when I watch an HD movie, I will be using all of the bandwidth.
Introduction of wireless edge devices to network:
In today’s society we have PDA’s, iPhones, Android devices, and tablets of which all use wireless and allows user to access the internet away from home and employees the option to access the cooperate network when away from the office.
With the introduction of wireless edge devices on a network it has an increase in performance and freedom compared to those who use a wired connection. With fewer user on the wireless network than on the wired network, traffic and user are fewer, which makes the network faster comparably. But as we have learned, increases in wireless traffic have problems like physical obstacles, interference from other wireless devices, the distance from an access point, and access rights to other
networks.
Voice over IP:
VoIP use the same network as everyone else in an office or even in a home. With the increase in use let’s say the office, the network would have performance issues if everyone was on at the same time or if the service was not correctly set up. Depending on what the VoIP service is setup for, any increase in use, like faxing, data, voice, video streaming for conference calls, and others will degrade the networks performance and leave users with slower connections and delays in receiving information.
Increase in number of Applications:
Applications that run on a network from a server or other client, will have an impact on network performance. The more applications that are used across the network the more the network will have problems in performance. Applications like shared calendars, MS Office 365, QuickBooks, and others can bring the network to a crawl.
What are expected differences in data transfer rates for those users on a wired LAN and those using wireless laptops?
Technology for Wi-Fi has become increasingly faster. We now have wireless router that can achieve speeds of 3Gps compared to 300mps and slower. When using 802.11a/c g or n wireless connections, the speeds range from 54g all the way to 1900. Compare the speed to that of a wired network of 10mbs/100mbs/1000mbs. Wireless can have speeds of 54mbs, 130mbs, 300mbs, and faster. These wireless speeds are considered faster than that of the wired connection, but are not as reliable because of interference from other wireless devices, other wireless networks, and some wireless phones, this will reduce the speed of the wireless laptop or device.
What issues should you consider in allocating and load balancing network resources?
When allocating and load balancing network recourses one should consider the number of request that are issued to any given server. The server with the most resources show be given higher priority and those with not so many show have lower priority. With using QoS, one could setup bandwidth constraints for the user with less priority and make more bandwidth available to those who need it. For example, I can set my router up with QoS to give me the most bandwidth for gaming, internet applications, or for a VoIP device.
How is transmission control protocol (TCP) congestion control affected with an increase in the number of users? How would you mitigate any potential congestion problems?
TCP congestion control is meant to control the rate in which the data enter the network, because each network has boundaries that will collapse if the network is hit with too much traffic at one time. Setting algorithms’ like slow start, congestion avoidance, fast retransmit, and fast recovery will help to keep the network from becoming too congested and collapse. When the number of user has increased so does the flow of data on the network, so the TCP congestion control will come in handy in helping to avoid potential failures in the network. With the use of timers an d acknowledgments to identify problems between the sender and the receiver, congestion in the network will be controlled or even avoided.
What quality of service (QoS) metrics would you collect to analyze and manage network performance? Why?
The metric used to analyze and manage network performance are availability, delivery, latency, bandwidth, mean time between failures (MTBF) and mean time to restore service (MTRS). Using this in any network will greatly reduce the lag or delay in a network, and give the administrators information on what need to be changed or configured to make the network more stable and reliable. So when analyzing and managing network performance includes availability, loss, delay and utilization.
References:
Dimitrios Serpanos, Tilman Wolf. (2014) Architecture of Network Systems Entire eBook. Taken from: https://ecampus.phoenix.edu/content/eBookLibrary2/content/DownloadList.aspx?assetMetaId=8d913cf2-7295-4a2a-930a-bd706ecd0766&assetDataId=x Microsoft. (2014). Installing Network Load Balancing. Retrieved from: http://technet.microsoft.com/en-us/library/cc731695.aspx
NTC 406
July 14th, 2014
James Parks
Slow Network Analysis Paper
Increase in number of users:
In 1993 there were 14 million users in 2014 there is almost three billion users. The network constituting of interconnected set of computers in a small, limited area such as office buildings, universities, homes etc. is said to be a Local Area Network (LAN). Performance of a LAN refers to the average speed of the network. There are many ways to measure the performance of the network. With the increase in the number of users the performance of the network could come down drastically. This is due to heavy user of the network and the internet, which will make connections slower. For example, I have a 14 year old and a 4 year old who like to play Mind Craft online along with some other online games. The internet we have is only 3.5mbs and when both of them are on playing, I have a hard time getting to my online school to do homework because they are both using up all the bandwidth.
Increase in network nodes:
A local area network consist of a collection of nodes (computers) or devices connected to the network. Switches, routers, modems, and hubs is considered a network node. Increases in the number of nodes, which …show more content…
has an increase in cost, also raises the amount of network traffic, this all leads to delay and performance issues with the network, like the network being slow or a delay in web pages loading. When packets are sent out across the network these packets have to hop from one node to the next until it reaches its final destination, the fewer computers and devices the shorter the hobs and a shorter path.
Use of peer-to-peer network:
Computers in a network which is equally privileged and can communicate with another computer as long as it has the rights, is known as peer-to-peer network. This is called client and server, this could range from just a few computer to hundreds of devices, systems, and anything connected to the network in which it communicates. With the increase of the number of computers, performance will decrease and the network will be slow.
Streaming Video:
Streaming video across the network will put a strain on the network, as the major part of the bandwidth will be consumed, which will greatly reduce the networks speed and decrease its efficiency. Video for streaming is compressed so it can be sent out on the network and use very little kbs, but if you are to watch a HD video, the bandwidth need will be higher. The recommended bandwidth for an SD (Standard Definition) movie is 2.5mbs, HD (High Def) will require more. So if one is on 3.5mbs like I am, when I watch an HD movie, I will be using all of the bandwidth.
Introduction of wireless edge devices to network:
In today’s society we have PDA’s, iPhones, Android devices, and tablets of which all use wireless and allows user to access the internet away from home and employees the option to access the cooperate network when away from the office.
With the introduction of wireless edge devices on a network it has an increase in performance and freedom compared to those who use a wired connection. With fewer user on the wireless network than on the wired network, traffic and user are fewer, which makes the network faster comparably. But as we have learned, increases in wireless traffic have problems like physical obstacles, interference from other wireless devices, the distance from an access point, and access rights to other
networks.
Voice over IP:
VoIP use the same network as everyone else in an office or even in a home. With the increase in use let’s say the office, the network would have performance issues if everyone was on at the same time or if the service was not correctly set up. Depending on what the VoIP service is setup for, any increase in use, like faxing, data, voice, video streaming for conference calls, and others will degrade the networks performance and leave users with slower connections and delays in receiving information.
Increase in number of Applications:
Applications that run on a network from a server or other client, will have an impact on network performance. The more applications that are used across the network the more the network will have problems in performance. Applications like shared calendars, MS Office 365, QuickBooks, and others can bring the network to a crawl.
What are expected differences in data transfer rates for those users on a wired LAN and those using wireless laptops?
Technology for Wi-Fi has become increasingly faster. We now have wireless router that can achieve speeds of 3Gps compared to 300mps and slower. When using 802.11a/c g or n wireless connections, the speeds range from 54g all the way to 1900. Compare the speed to that of a wired network of 10mbs/100mbs/1000mbs. Wireless can have speeds of 54mbs, 130mbs, 300mbs, and faster. These wireless speeds are considered faster than that of the wired connection, but are not as reliable because of interference from other wireless devices, other wireless networks, and some wireless phones, this will reduce the speed of the wireless laptop or device.
What issues should you consider in allocating and load balancing network resources?
When allocating and load balancing network recourses one should consider the number of request that are issued to any given server. The server with the most resources show be given higher priority and those with not so many show have lower priority. With using QoS, one could setup bandwidth constraints for the user with less priority and make more bandwidth available to those who need it. For example, I can set my router up with QoS to give me the most bandwidth for gaming, internet applications, or for a VoIP device.
How is transmission control protocol (TCP) congestion control affected with an increase in the number of users? How would you mitigate any potential congestion problems?
TCP congestion control is meant to control the rate in which the data enter the network, because each network has boundaries that will collapse if the network is hit with too much traffic at one time. Setting algorithms’ like slow start, congestion avoidance, fast retransmit, and fast recovery will help to keep the network from becoming too congested and collapse. When the number of user has increased so does the flow of data on the network, so the TCP congestion control will come in handy in helping to avoid potential failures in the network. With the use of timers an d acknowledgments to identify problems between the sender and the receiver, congestion in the network will be controlled or even avoided.
What quality of service (QoS) metrics would you collect to analyze and manage network performance? Why?
The metric used to analyze and manage network performance are availability, delivery, latency, bandwidth, mean time between failures (MTBF) and mean time to restore service (MTRS). Using this in any network will greatly reduce the lag or delay in a network, and give the administrators information on what need to be changed or configured to make the network more stable and reliable. So when analyzing and managing network performance includes availability, loss, delay and utilization.
References:
Dimitrios Serpanos, Tilman Wolf. (2014) Architecture of Network Systems Entire eBook. Taken from: https://ecampus.phoenix.edu/content/eBookLibrary2/content/DownloadList.aspx?assetMetaId=8d913cf2-7295-4a2a-930a-bd706ecd0766&assetDataId=x Microsoft. (2014). Installing Network Load Balancing. Retrieved from: http://technet.microsoft.com/en-us/library/cc731695.aspx