Troubleshooting Layer-Free-Samples for Students-Myassignmenthelp

Question: Discuss about the Various Troubleshooting Layer. Answer: Independent of method used to access the network. When there is no data transfer, this layer is always likely the problem and can be troubleshot using network monitoring tools and techniques such as pinging to see if there is communication with another target. Further, network monitoring tools will show if there is data and communication within the network. Just by viewing connection details on the networking console of a computer, one will see if data is being transported or not and then initiate remedial measures. The Ping tool is excellent for troubleshooting problems within this layer because the common problems are due to routing and addressing. Pinging the loop-back address will provide information if the IP is properly configured and is working (Mudracola, 2016). Investigating blunders at this level incorporate utilizing link testing devices to guarantee cabling is working appropriately. Connection lights on arrange gadgets are additionally an extraordinary approach to investi gate issues at Layer 1. On the off chance that the connection light is green, at that point Layer 1 is working. In the event that the connection light is another shading or not illuminating by any stretch of the imagination, at that point there is an issue at this layer. Simple approaches to test this are swapping out links with a working link, swapping SFPs, or modules, and utilizing link testing Troubleshooting the Internet Layer This layer plays the role of addressing, routing, and packaging. When there is a problem in this layer, it is likely the cause is due to one of its three listed functions ( addressing, routing, and packaging). It can be troubleshot to solve problems by first checking the IP addressing table and the MAC addressing tables. By viewing the logs from the ICMP (Internet control message protocol), one can see any error messages of undelivered packets and resolve this through addressing and routing. Using a tool like WireShark or other network monitoring tools can help in troubleshooting the layers problems. The route tool and the Tracert are some of the tools that can be used for trouble shooting this layer (Davies, 2006) Troubleshooting the Transport Layer This layer is responsible for giving the application layer datagram and communication services. Problems with this layer can be solved using packet and session tracer tools to monitor activity. Most problems in this layer are mainly because of blocked ports and one area to look at is the firewall and the firewall access lists that are blocking TCP/ UPD ports. The next area to check is QoS which when enabled, can block traffic or lead to slowing of traffic and result in large frames being fragmented as well (Alpern Shimonski, 2010). Troubleshooting the Application Layer This layer gives applications the capability to access services of other layers and problems that are likely to be experienced in this layer include addressing (MAC addressing), collisions, duplex errors, spanning tree issues, and CRC frame errors. Troubleshooting requires viewing logs for broadcast storms, the runts and giants, and collision information that can be evaluated using network monitoring tools (Tetz, n.d). References Alpern, N. J., Shimonski, R. (2010). Eleventh hour network+: Exam N10-004 study guide. Rockland, Mass: Syngress. Davies, J. (2006). Chapter 16 Troubleshooting TCP/IP . Technet-Microsoft. Retrieved 27 November 2017, from https://technet.microsoft.com/en-us/library/bb727023.aspx Mudrakola, S. (2016). Network Problems? Troubleshoot with the OSI Model. Techgenix.com. Retrieved 27 November 2017, from https://techgenix.com/network-troubleshooting-osi/ Tetz, E. (n.d). CISCO Networking: Application Layer Troubleshooting. Retrieved 27 November 2017, from https://www.dummies.com/programming/networking/cisco/cisco-networking- application-layer-troubleshooting/