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Wireless Networks Thread, New fiber backbone and switches brainstorm with me!!! in Technical; Ok Im looking into this again as some money has been made available. Also since we have double the members ...
  1. #16
    ChrisH's Avatar
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    Re: New fiber backbone and switches brainstorm with me!!!

    Ok Im looking into this again as some money has been made available.
    Also since we have double the members as well Im hoping for some good advice .

    Basically Im going to have the central cabinet in the server room and some 8 core fiber links to two other cabinets.
    For the other 2 cabinets Im looking at having some HP Procurve 2650 These have 48 10/100 and 2 1000/minigbic.

    Is it worth me using both GBIC slots on each switch to feed from the fiber and set up any traffic rules (if possible) or will one suffice?

    As for the server room end im not sure I need about 70 points for clients and then say about 10 gig ports for servers and 8 gbic slots if I fully utilise all the cores on the to 8 core fibers running to it.

    I was thinking either :

    Scenario 1
    HP Procurve 2824
    this has 20 gig ports which will do for the servers and trunking to other switches in the cabinet and 4 GBICs for the fibre.

    2 HP Procurve 2650 These have 48 10/100 and 2 1000/minigbic.

    to serve the clients and handle the other fiber (if needed)

    or

    Scenario 2

    HP Procurve 2650 These have 48 10/100 and 2 1000/minigbic.

    To serve most of the clients. ^^

    Hp Procurve 4140gl this has 40 10/100/100 ports which would be used for the server and the clients that cant go on the 2650. This with another 6 port GBIC module to handle the rest of the fiber if needed.

    I think scenario 2 sounds the best but then im not sure if this is right for this implementation.

    Thoughts advice all welcome.
    Be nice!!!

    Cheers

    Chris

  2. #17
    ChrisH's Avatar
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    Re: New fiber backbone and switches brainstorm with me!!!

    Oh and if anyone can reccomend someone to do the Fiber in Lancashire or a national company I would be gratefull.

  3. #18

    Geoff's Avatar
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    Re: New fiber backbone and switches brainstorm with me!!!

    Ok, first thing. Don't bother going faster than 1Gbit with PCI based systems. The PCI bus will not go any faster than 1.3Gbit.

    Secondly. Western Business Systems in Blackpool are a good firm for fibre. They have all the testing gear and what not. Give them a ring on 01253 298111.

  4. #19

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    Re: New fiber backbone and switches brainstorm with me!!!

    Just to add to this we run HP Procurve throughout now with my latest upgrade. With a 4108gl as the core switch and 2524's in the cabinets stacked with 2324's below. Before I upgraded by putting a 2524 in each cabinet I had no management except for the core switch.

    Fibre link's to all but 2 cabinets which are gig copper.

    I use network notepad to produce interactive diagrams of the network and ict suites. This allows you to pick an object i.e one of your switches and with a right click to either telnet to it or go to the web management of it.

    I also have diagrams of my ict suites with pictures of the computers all labelled with the correct names and then with a right click can vnc view any of them. Handy when someone says "It's the 3rd one from the window" etc...

    www.networknotepad.com

    Ben

  5. #20
    ChrisH's Avatar
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    Re: New fiber backbone and switches brainstorm with me!!!

    When you say dont go faster than 1 gigabit on the links did you take into account some of the switches have 48 ports? Thats why I was asking would one gig link be sufficient for a 48 porter or should I use both if I can.

  6. #21
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    Re: New fiber backbone and switches brainstorm with me!!!

    Depends on the sort of traffic but in general I've had no problems with just the single gig link, if you plug in both to the main chassis you'll get a loopback effect and network availability will cease within a few minutes there are settings to stop this but I can't think of name presently (Sunday Morning, good drinking session last night etc ) I do remember it was mentioned in another forum topic on this site though!

    Wes

  7. #22
    ChrisH's Avatar
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    Re: New fiber backbone and switches brainstorm with me!!!

    Spanning tree?

  8. #23
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    Re: New fiber backbone and switches brainstorm with me!!!

    Yeah that's it! Shows what alcohol does to the brain lol 8O Sadly I learned this the hard way by not realising I'd connected a series of switches into a loopback, what fun that was! Thankfully no-one saw this as I quickly unplugged the offending cables. ops:

    Wes

  9. #24
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    Re: New fiber backbone and switches brainstorm with me!!!

    Thats a good point about the loopback effect now I have thought about it but I assumed something could be done with a Vlan or something else to handle the traffic to avoid such situations.

    Edit Typical just found it first time

  10. #25
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    Re: New fiber backbone and switches brainstorm with me!!!

    Oh whats HP like on warranty returns for switches? I was wondering whether or not to get a spare....

  11. #26

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    Re: New fiber backbone and switches brainstorm with me!!!

    HP Procurve is lifetime warranty on them, if there support on them is like there desktops, laptops and printers, then I would get a spare or two

  12. #27

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    Re: New fiber backbone and switches brainstorm with me!!!

    @wesleyw: You need to trunk the links otherwise the switches will get confused. Spanning tree will simply disable one (the one it decides is shortest/slowest) but you do get redundancy. A redundant link is another option. I've found that trunking on the procurves gives you redundancy too - I pulled out a fibre patch and the link just reverted back to a gig rather than 2.

    @ChrisH: Due to the way I have had to move my server room, I now have 2 core switches. These are both HP 4104gl and use 2 fibre links between them (trunked). Off one of these I have 2 copper links to a 2824 (trunked) which all my servers hang off. I use the 2650 in my remote cabs. To answer your question Chris, both solutions would work admirably but IMHO the RJ45 module for the 4104 is not cost effective.

  13. #28
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    Re: New fiber backbone and switches brainstorm with me!!!

    I couldnt find a bare switch and the one I came up with which I linked to had those two modules already installed. I shall search harder because I found it last time!!

    Found it first time typical!!!!

    Given my requirements what would you suggest Ric?

  14. #29

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    Re: New fiber backbone and switches brainstorm with me!!!

    @ChrisH: Qual will do you a good deal but for rough prices download the configurator from HP.

  15. #30
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    Re: New fiber backbone and switches brainstorm with me!!!

    Im struggling to see the advantage of the 4104 apart from all the modules are interconnected? Pm ric

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