Network Troubleshooting and Routers

This is not a paper please separate the answers

Minimum of 175 words
Initial Post

You are at work when network access suddenly goes down. Research and discuss how you can discover whether a router is to blame.

Reply to Post A & B

75 words Post A

This is a good questions since it does occasionally happen (even though I work for an internet provider Comcast). After checking a few basic things like, the lower right hand corner of the screen to see what the internet indicator is displaying, globe, wifi icon or ethernet icon. I would check to see if I had been dropped from the network due to some other failure. On a more basic level the router itself has indicator lights that help determine if there is a fault or failure. Assuming I do not have access to the router since I do not work in IT, I would ping the router to see if I get a response. In most cases when I have an internet failure the last thing I think of is the router. Another way to test whether the router is to blame is by simply switching the router out. If the internet is back up once you switch the router out then you have your answer. I recently learned after experiencing slow internet speeds recently that the router needs to be changed out periodically as it can begin to cause your internet speeds to slow down although I have not experienced the router failing completely.

75 words Post B

In an office setting if the network goes down the first action is to gather information on which system computers are affected, once all the affected systems are identified check the next logical link is to check what network resources are still reachable then check network closet that may have network switches check to see if they are operational.
Check for any wiring issues like unplugged connections ports I would reboot the switches this will not cause any additional problems since the network is already down and reseat the RJ45 connections.
Next run some diagnostics like pinging the router and running trace cert to determine where the failure begins.
Check connections to the DNS server domain controller to determine if the outage is on the subnet or beyond, I would run a DNS flush command to try and restore a new connection.
Also, I would perform an IP release/new from command prompt.

Reach out to others on different subnets to see if they can communicate with the affected subnet or if they receive a bad IP error by pinging the router from another subnet.

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