University of Chicago
Type of paper: Thesis/Dissertation Chapter
Performance index for LAN network
Performance index for (LAN) network
A local area network (LAN) can be defined as a group of computers and its related support devices that use similar communication or wireless link. In this case this support devices use the resources of a single processor that is used in small locality. A typical example is an office set up that its computers and related support devices may be used to for a common office works e.g. finance department. Similarly in such a set up, data storage and other computer applications are shared through a common computer chain in the department and hence make application for related computer programs easily accessible. Apart from the office set, a local area network can be used to serve a wide range of users such as home network that comprises a few users and also can as well serve a multiple user platform such as in an FDDI network (Donahue, 2007).
In a local area network it is commonly noticed that data is sent through some form of packets that are used to regulate the transmission of the packets. In such scenarios the use of different technologies is allowed. Ethernet is one of the most widely used LAN technologies and is specified in a standard known as IEEE 802.3. Apart from this commonly used LAN technology other types include token ring and FDDI (Charles, 2000).
Considering the Kelsey School District the number of Local Area Networks (LANs) has increased exponentially and hence there are aspects of it doubling in the next few years to come. Based on an economic and operational thought, the performance index of the school’s LANs is critical. In such a case, the performance is expected to slow down and also on top of that user productivity will be at its minimal level. In such as case using the term congestion control will be enormous. Given the available technologies congestion avoidance as a result of increased number of users will be the best practice. One thing for sure is that TCP has no capability to control congestion per user but intermediate devices such as the use of IP router is highly recommended for the institution for it to be able to solve the issue of congestion (Hook, 2000).
Increase in the network nodes can be implemented by the use of implementing managed switches in the environment. In such a case these switches enables control over the server ports as well as minimize collisions. The most important thing for the institution is to ensure they do have managed switches on the network which will be used to control VLANs and bridging loops. Apart from that they should also ensure the servers switch ports are set to the recommended speed and duplex settings.
Use of peer-to-peer network involves use of a permanent infrastructure that links a number of computers in a given over copper wires. In some instances, P2P network can be a network on a much greater scale whereby a direct relationship among users over the internet is set up by the use of special protocols and applications. One of the advantages P2P promotes the ease of working together. In scenarios whereby the school teachers are not physically located in the same classroom set up or office set up P2P can be of good use for updating files and data sharing among peers with an option of confidential file being blocked for security. For the case of student platform, the administration has the capability to block access to internet music and other illusive files for them to maintain a learning oriented P2P network (Schwartz, 2004 .
Introduction of wireless edge devices to network involves the use of router over the use of internet cables. Access to the internet services will increase per head as compared to the number of users who rely on the internet cables and internet ports. The advantage of using a router is that it may include several security functions such as firewall and VPN handling that can be handled by separate devices. With the absence of capture cards to capture video from each computer in LAN network, the students or other users can run OBS on every system and in the end stream the video across the LAN network to the host computer. With the above capability, the host computer is able to pick local streams from every individual computer in the network.
Using a single TCP session it enables screen updates and also does refreshes at fast speed hence easier communication at the client’s machine remote location. The end result is that it consumes little bandwidth and any type of delays and dropped packets are minimized. Cases of increased users in LAN network will be characterized with delays and subsequent significant drop for the TCP window per head. To avoid such setup scenarios, the institution should make sure that links are not congested with subsequent special treatment (QoS) policies are provided for optimal best performance from the packets (Wood, 2010).
Performance issues of LAN can be identified, solved and isolated by the use of correct technology. LANs enables will enable boost the overall performance of the institution with high speed and low cost technologies e.g. Ethernet. One consideration for the above result is that MetaFrame farm should be at least 100Mbps at full duplex. The other consideration is that switched be hard wired to minimize any related issues with auto negotiation. Generally, a good LAN design should be in such a way that the right VLAN and spanning Tree implementations are put in place for minimal multicast and broadcast congestion also with an option of bridging possible loops.
A. Hooke (September 2000), Interplanetary Internet, Third Annual International Symposium on Advanced Radio Technologies, retrieved 2011-11-12
Gary A. Donahue (June 2007). Network Warrior. O’Reilly. p. 5
Schwartz, John (2004-04-05). “A Heretical View of File Sharing”. The New York TimesSpurgeon, Charles E. (2000). Ethernet The Definitive Guide. O’Reilly & Associates
Wood, Jessica (2010). “The Darknet: A Digital Copyright Revolution”. Richmond Journal of Law and Technology