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Wired Networks Thread, 10GB networks backbones needed? in Technical; Well our fibre is all OM3 so the cost is all in the hardware. I am also looking at a ...
  1. #46
    Rozzer's Avatar
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    Well our fibre is all OM3 so the cost is all in the hardware. I am also looking at a modular core swell for growth.

  2. #47

    SYNACK's Avatar
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    Quote Originally Posted by psydii View Post
    IMO POE E4800's for WAPs is overkill. V1910's are plenty good enough.
    V series is fine apart from the warrenty and upgrade path, you kind of have nowhere to go other than a whole new switch. Saying that we ended up the the e2510 series ones in one of my schools without facility for 10GB just because of the cost. In another they are a lot more longsighted so we used the more expencive e2910 switches that could take 10GBe modules in the future.

    Its not so much putting 10GBe in but preping for it if you end up needing it is still a good plan and for the time being the 2910s are way better switches than the 2510s so the benifit is immediate anyway. We still need to pull the old fibre and put in OM3 before we get to upgrading the core and going 10GBe so it is still a way down the road.

  3. #48

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    Any V1910's with an HP part number sticker on the back have lifetime NBD replacement warranty (like procurve) and are so cheap that having a couple of spares on the shelf is quite viable even in cash constrained environments. (can you tell I'm a fan?)

    As time goes on the kit gets cheaper, but the labour gets more expensive. So, yes definately make sure any links that go in now are 10GBe rated, but only pay for 10GBe switches when you are pushing the limits of what can be done with LACP.

    Unless you have the cash now, and know you wont in a few years. Then it is a tougher descision.

  4. #49
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    Last summer I started a 3 year plan to upgrade our network. Starting at the core, we needed layer 3 switching at core and while at it to increase the number of fibre links between our buildings from a single 1Gb to 2 or 4 1Gb bonds.

    I looked at several options inc HP, Cisco, Netgear. Decided on the a few Netgear GSM7352S's and a GSM7228PS for POE/POE+. They have 2 10Gb SFP+ ports per unit and we have them stacked on 48Gb redundant ring. Cost for features was deciding factor, plus Netgear lifetime warranty.

    What intrigued me was the SFP+ LRM modules for the netgear switches (all suppliers have these). These modules allowed me to reuse the existing OM1 fibres at 10Gb speeds. Distances upto 220m though but with the size of our site that was more than possible. This was a logical step forward and allowed us to incorporate 10Gb backbone for future proofing, and though it is overkill in normal day to day use (atm), the replication speeds and reduced backup times moving data between backup and live make logical sense.

    linked up to SAN with dual 10Gb SFP+ links to core.

    paid about £1600 for the 48 port + 2 sfp+ GSM7352S units £280 for each of the LRM modules.

  5. Thanks to camel from:

    ctbjs (19th April 2012)

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    Quote Originally Posted by CyberNerd View Post
    (4800 series would be good for this, as they also take 10Gb/s modules for uplinks) .
    Running also a bunch of 4800. LACP with 2x 1Gbe is running fine, 4x or 8x would be simply too much for us. 10Gbe slot modules are a little expensive. Next switch generation for new building will be 5500 HI series, though.

    Quote Originally Posted by psydii View Post
    (can you tell I'm a fan?)
    If you are a true fan, you know the truth about the V1910, like me ^^

    Quote Originally Posted by CyberNerd View Post
    300 machines at 30% bandwidth on 802.11n saturate a 2Gb/s core.
    Well, but in reality, there“s no continuous download at that speed. Surfing youtube, Skype, chatting, ... Nothing really exhausting.
    Last edited by snoerre; 5th April 2012 at 09:18 PM.

  7. #51

    SYNACK's Avatar
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    Quote Originally Posted by psydii View Post
    Any V1910's with an HP part number sticker on the back have lifetime NBD replacement warranty (like procurve) and are so cheap that having a couple of spares on the shelf is quite viable even in cash constrained environments. (can you tell I'm a fan?)
    Maybe things are different in the UK to the rest of the world but the 'truth' here is that they only have three year warrenties:
    HP 1910-24G Switch (JE006A) specifications - HP Products and Services Products
    HP V1910-16G Switch - 16 Port - Managed Switches - Elive.co.nz

    I can't even find the V1910 on the UK site so I'm a bit dubious as to the validity of your information.

  8. #52

    glennda's Avatar
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    I don't think LACP is an option if you use VLANS. I read somewhere you can't send tagged packets over LACP trunks but that may be wrong.

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    Quote Originally Posted by glennda View Post
    I don't think LACP is an option if you use VLANS. I read somewhere you can't send tagged packets over LACP trunks but that may be wrong.
    That is wrong. We have multiple LACP trucks and VLAN extensively.

  10. #54

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    Quote Originally Posted by CyberNerd View Post
    That is wrong. We have multiple LACP trucks and VLAN extensively.
    Ah as said it could of been wrong so is!

  11. #55

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    Quote Originally Posted by SYNACK View Post
    Maybe things are different in the UK to the rest of the world but the 'truth' here is that they only have three year warrenties:
    HP 1910-24G Switch (JE006A) specifications - HP Products and Services Products
    HP V1910-16G Switch - 16 Port - Managed Switches - Elive.co.nz

    I can't even find the V1910 on the UK site so I'm a bit dubious as to the validity of your information.
    You're quite right to question a random assertion on the internet when they fail to provide references. Here you go:
    From the HP link you provided, click Product Documentation, then click " V1910 datasheet with lifetime warranty final English 357 kB, PDF "

    Also here is the warranty info for all HP Networking equipment:
    HP Networking warranty information


    JE005A HP 1910-16G Switch Lifetime† Next Business Day
    JE006AHP 1910-24G Switch Lifetime† Next Business Day
    JE007A HP 1910-24G-PoE (365W) Switch Lifetime† Next Business Day
    JE008A HP 1910-24G-PoE(170W) Switch Lifetime† Next Business Day
    JE009A HP 1910-48G Switch Lifetime† Next Business Day


    There is a caveat 'in most regions' in one of those documents, so you may be unlucky..

  12. #56

    Michael's Avatar
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    If you compare the HP 1910-24G-PoE and the HP 2910-24G-PoE+ this is the most fair comparison as they're both gigabit switches with 24 ports.

    If you look at the specifications in detail, there is quite a difference in performance:

    Memory and processor
    Module : ARM @ 333 MHz, 128 MB flash, packet buffer size: 512 KB, 128 MB RAM

    Memory and processor
    Processor : Dual ARM1156T2S @ 515 MHz, 4 MB flash, packet buffer size: 6 MB, 1 GB compact flash, 512 MB SDRAM

    Routing/switching capacity
    56 Gbps

    Switching capacity
    128 Gbps

    The 1910 in my opinion has more the capacity of a high end 48 port 10/100 switch like the J9279A:

    Memory and processor
    J9279A: Processor : MIPS @ 264 MHz, 16 MB flash, packet buffer size: 0.75 MB, 64 MB SDRAM

    Switching capacity
    J9279A: 48 Gbps

    Bearing in mind gigabit offers considerably higher speed gains, the 1910 series are not going to show any improvement in practice, despite being connected @ 1Gbps. It really means nothing. In the switching world there's virtual gigabit and real gigabit.

  13. #57

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    Quote Originally Posted by Michael View Post
    If you look at the specifications in detail, there is quite a difference in performance:
    Well, it“s really nothing more that both switches support non blocking switching:

    - V1910: [24x RJ45 ports plus 4x SFP slots(Those SFP ports are not shared with the RJ45 ones)] * 2 == 56Gbit/s
    - HP 2910: [24x ports @RJ45/SFP (the 4 SFP ports are shared with the last 4 RJ45 ports) plus 4x 10Gbe optional modules] * 2 == 128 Gbit/s

    The price of the 2910 is more than twice as much of the V1910. For that price the ex3Com is a bargain...


    PS.: HP networking product summery: http://h17007.www1.hp.com/docs/suppo...ntySummary.pdf
    Last edited by snoerre; 8th April 2012 at 12:31 PM.

  14. #58

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    Quote Originally Posted by snoerre View Post
    For that price the ex3Com is a bargain...
    Unless you need the features of the 2910 or the warrenty if your outside the preffered customer area for the ex 3com stuff

  15. #59

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    Quote Originally Posted by snoerre View Post
    The price of the 2910 is more than twice as much of the V1910.
    And there's a good reason for this. The specifications are higher and in practice it offers true gigabit connectivity. The gigabit pipe will be used as much as possible, meaning the network itself will not be a bottleneck.

    I'd rather the workstation be the bottleneck, rather than the workstation waiting for the network. Most newer workstations can handle decent transfer speeds that exceed that of 10/100. Installing a cheaper gigabit switch is going to perform just as well as a decent 10/100 switch with little gain. Installing a decent gigabit switch, you make use of a fraction of what gigabit has to offer with plenty of capacity for the future.

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    Quote Originally Posted by SYNACK View Post
    Unless you need the features of the 2910 or the warrenty if your outside the preffered customer area for the ex 3com stuff
    Hm, which features are you talking about? Is it the optional 10Gbe you are talking? Softwarewise I cannot find anything the 2910 is able to do the 3Com cannot. Btw, is there“s an area where the V1910 doesn“t have an HP warranty, the 2910 wouldn“t have that one there, either...

    Quote Originally Posted by Michael View Post
    true gigabit connectivity.
    As I mentioned before, both are non blocking switches. So both deliver "true gigabit"
    Last edited by snoerre; 8th April 2012 at 09:49 PM.



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