I really need help on a info system assignment

Discussion in 'General Off-Topic Chat' started by notrustinsasuke, Apr 9, 2014.

  1. notrustinsasuke
    OP

    notrustinsasuke Advanced Member

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    I don't expect an answer but i just need help i don't understand what the problem is .


    The below image diagrams a network for a small business. The network uses cable internet provider to connect to the internet. The network is setup as peer to peer and the server is only a webserver. In the recent week their network communications have slowed to a stop. They have contacted the cable internet provider who says that everything is working well. They say bandwidth is being completely used up in communications between your network and their systems. You are a consultant asked to improve the network communications since their webserver cannot be accessed by customers and the network users cannot use the network. What do you believe is a likely problem? What do you recommend to solve the problem and prevent the same issue in th[​IMG]e future?
     

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  2. FAST6191

    FAST6191 Techromancer

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    Traditionally I am supposed to poke fun and note you left an embedded image in there which led directly to your college name... "how about that Edwards air force base?" will have to do there. If this especially bothers you we can play editor.

    They have contacted the cable internet provider who says that everything is working well. Uplink is fine then, good to know.
    The network uses cable internet provider to connect to the internet. So single entry point for internet, I guess they have a service level agreement. Anyway the ISP says it is good and I will roll with that for now (in the real world you do have to check everything else first but do not believe them all the time -- http://www.theregister.co.uk/2014/03/27/bt_home_hub_3a_scuppers_some_vpn_connections/ ).
    The network is setup as peer to peer and the server is only a webserver. Peer to peer.... that looks pretty centralised to me in terms of hardware. I assume it means it does not have a domain or something and any fileshares are not done to a file server -- actual p2p on a LAN I have thankfully not seen since the days of token ring (which I was mostly too young to see).
    In the recent week their network communications have slowed to a stop. Internal and coming from external according to later things.
    You are a consultant asked to improve the network communications since their webserver cannot be accessed by customers and the network users cannot use the network.
    They say bandwidth is being completely used up in communications between your network and their systems. I am consultant in this scenario. What is going to my network? Am I running backup/VPN for services.... what? The picture and the question say nothing.


    Am I supposed to pick up on the definition of the switch, hub and router? It does say a switch here rather than hub.

    My first guess would then be the local network, maybe with the added bonus of the webserver, has saturated the backplane of the switch. Buy a beefier one would be an option though figuring out what might be causing it is also good.
    Equally assuming the switch is a dumb switch with little logic in it beyond being a switch you might be able to plug the server into the router or QOS/reserve bandwidth it at the switch level. That way the switch can saturate all it likes but the customers should still be able to get onto the website, at least until the cable modem is maxxed out.

    I am curious as to what peer to peer is in this scenario as well. If it is fileshares, printers and whatever (worse if you have telecoms going through the same network) then maybe time to consider some servers.
     
  3. Foxi4

    Foxi4 On the hunt...

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    I'm no networking guy, but here's what I think. If the provider tells you that everything on their end is working fine, it's probably working fine - forget that angle, especially if the ISP says that your modem dials them up just fine. The diagram is following the so-called star topology hardware-wise, so unless it's set up differently in software, it's a star network. Everything is centralized around the switch+router hub area. Now, if the PC's and the server are connected together with a switch, they should be able to access each other's data just fine - if they cannot (LAN completely broke down), the switch is borked. If LAN still works fine, but the internal network cannot be reached from outside and vice-versa, meaning cannot use the Internet, the router is borked.

    Of course double-check that with someone else - again, I'm no networking specialist.
     
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