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Wired Networks Thread, New network build in Technical; Would you not be taking any kit across with you?...
  1. #31

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    Would you not be taking any kit across with you?

  2. #32
    Gaz
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    We don't have a lot of equipment at the moment and we are due to expand. We currently have 2 servers, one of which would be the content filter as I plan to stay with Smoothwall despite the shoddy support of late, the other could play backup. I'd like a new server for the AD, DNS, and other such things.

    The switch that we currently have may be used somewhere but probably not up to the job of a core switch (Cisco SG300)

    The Computers would come but the older ones would be binned so we would need more to make up the numbers, each computer room would have 16 PC's in it, there would then be an office with ~10PC's in it. We have 20 machines that we could bring over so we would need around 38 more, 28 workstations and 10 SFF office PC's around 50 in total, not including users using their own laptops.

  3. #33
    januttall's Avatar
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    Redundant links would be a very good idea and try to use a core a distribution and an access layer will make it easier on upgrades and future work also plan now for upgrades in another 3-4 years so if they want to add another 200+Pc's where in your topology will it go and how easy would it be. think disaster recovery too.

    N.B Put all your switches on UPS's and try to use fiber for connecting cabinets/racks together floor mounted racks are far easier to deal with than cabinets and fiber between racks/cabinets prevents surges from propagating and also works faster not just because its light.
    Last edited by januttall; 26th February 2013 at 12:49 PM.

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    Gaz (26th February 2013)

  5. #34

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    Quote Originally Posted by Gaz View Post
    >>Gigabit switches for computer rooms with wall mounted cabinets
    Avoid this if you can, central distro rooms preferable.
    You want to keep the active equipment away from the user environment.

    You want it someher with Cooling

    You will also find that you may have 30 outlets whcih means 2x24port switches ( a waste of 18 ports ).

    You can balance ports across more than one switch centraly so a whole room is not affected by an outage.

    Switches add noise.

    Repatching in a classroom can be anoying for yourself and the users.

    Expensive extra ... cabinets, termination, power.

    It's unsightly.

    Rob

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    Gaz (26th February 2013)

  7. #35
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    Ceiling/wall data Socket for your Projector. A nice to have for your projector's management system

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    Gaz (26th February 2013)

  9. #36
    Gaz
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    Redundant links has been mentioned and so has core distribution. Normally redundant links would be used if there was a switch in the computer room, but if theres no switch in the computer room because theres a core distribution then where are the redundant links placed? Sorry again if that sounds silly but I've never been asked to do this sort of thing before.

    EDIT:
    Cheers Rob.
    Last edited by Gaz; 26th February 2013 at 11:59 AM.

  10. #37
    januttall's Avatar
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    Quote Originally Posted by Gaz View Post
    Redundant links has been mentioned and so has core distribution. Normally redundant links would be used if there was a switch in the computer room, but if theres no switch in the computer room because theres a core distribution then where are the redundant links placed? Sorry again if that sounds silly but I've never been asked to do this sort of thing before.

    EDIT:
    Cheers Rob.
    your redundant links go between all of your switches so that if a switch or cable dies it will automatically change over between (relies on STP) as normally duplicate links cause Loops. connect each of your switches to the others e.g. core - Distribution and Distribution - Distribution. it allows some maneuverability if something fails. and your core switches should also be connected with redundant links to each other.

    Not the best example but something like bellow. (FYI quick Google search)
    15.jpg
    Last edited by januttall; 26th February 2013 at 01:00 PM.

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    Gaz (26th February 2013)

  12. #38
    Gaz
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    Arh yes, thats kinda what I suspected.

  13. #39
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    Thought i would jump on board with this as we are in a similar situation,

    Could anyone provide links for information relating to regulations when looking at installing new server rooms,cabs,office spaces,hall space,classrooms and a place for the I.T. guys to work from.
    i have stumbled upon guidelines from other local authority's relating to installations of new work spaces but these are a few years old.

  14. #40
    Gaz
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    I wouldn't mind looking at the links you have found so far if you care to share.

  15. #41

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    We have 1 server room and 3 distribution rooms on both our sites with redundant links as mentioned.

    and each distro room has redundant links to edge switches.

    Rob

  16. #42

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    Quote Originally Posted by psydii View Post
    ....use the v1910 across the whole site (it supports VLANs, Static Routing, ACLs and QoS... what more do you really need?).
    This it turns out is a terrible idea, unless you're a samll PRU, Specialist, primary.

    The v1910 has a hard coded limit of 256 entries in its ARP table which limits the size of the network it can act as a router for. It still makes a great value semi-smart edge though.
    Last edited by psydii; 26th February 2013 at 02:17 PM.

  17. #43

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    These old Becta documents aren't a bad place to start:
    [ARCHIVED CONTENT] Industry and developers - Becta's specifications - Becta

    In fact they are up on the Department for Education site too:
    http://www.education.gov.uk/schools/...infrastructure

    Note that I have always had Wireless as a first class access medium, so not everything they say is true.
    Last edited by psydii; 26th February 2013 at 03:00 PM.

  18. #44
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    in terms of legal requirements. you must use Low Smoke Cabling and have Low Smoke Devices in Plenum spaces so WAP's above ceiling panels or in attics must be of the correct standard. as must the cables and cable coatings, unless inside Metal pipes, also firewalls (Not the digital security type) must be correctly penetrated and this includes cavity walls, e.g they must have a Pipe between them sealed with the correct sealants. in terms of the local authority i don't know what they want i work in a school but i haven't seen any guidelines. i understand BECTA were the country's standards but i haven't seen there documentation either.
    Last edited by januttall; 26th February 2013 at 02:17 PM.

  19. #45
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    no problem i will send via email if you would be so kind to provide your email address. i have the pdf docs and not the links.

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