Cheapest 25/100GbE switch options?

Discussion in 'Networking' started by mb300sd, Aug 6, 2018.

  1. mb300sd

    mb300sd New Member

    Joined:
    Aug 1, 2016
    Messages:
    24
    Likes Received:
    6
    Starting to hit the limits of 10GbE here, any cheap 25/100Gb options out there?

    Already picked up some cheap Dell ConnectX-4 cards that got cross flashed.
     
    #1
  2. psannz

    psannz Member

    Joined:
    Jun 15, 2016
    Messages:
    35
    Likes Received:
    7
    You might want to take a look at the Dell Z9100 Switch series.
    32 100G QSFP28 Ports used for <5k € is pretty nice considering it‘s „current“ tech.
     
    #2
  3. tuatara

    tuatara Member

    Joined:
    Mar 2, 2016
    Messages:
    46
    Likes Received:
    8
    Nothing resembling the deals on older 10/40/100 GbE enterprise gear or newer, consumer oriented 1/10 GbE stuff.

    I recently bought a new Mellanox SN2010 half-width switch with 18x 10/25 GbE + 4x 10/25/40/50/100 GbE. It retails for about $5,200, e.g., Newegg, depending on what OS it runs. Note, it's running in my home but it's not for a "homelab" and I didn't pay that price.

    How many ports are you looking for? Have you considered 40 GbE - vastly cheaper both for the switches and adapters.
     
    #3
  4. mb300sd

    mb300sd New Member

    Joined:
    Aug 1, 2016
    Messages:
    24
    Likes Received:
    6
    Mainly targeting 25GbE because I don't want to tear my house apart running fiber again, did it during a renovation and absolutely nothing is accessible. Looking back it probably would have been smart to pull MPO instead of LC, but what's done is done. Minimum requirements are 1 QSFP28, 4 SFP28 and 4 SFP+.
     
    #4
  5. tuatara

    tuatara Member

    Joined:
    Mar 2, 2016
    Messages:
    46
    Likes Received:
    8
    Ahh, that complicates things. You can get transceivers for 40 Gb over MMF but they're expensive.

    Requiring QSFP28 makes it harder too, most 10 Gb switches have 4x40 Gb uplinks.

    Is something like this in your budget?
    $3450 or best offer. 2 available, none sold so could try a low ball offer.
    28 x SFP+
    2x QSFP28 ==> 1x QSFP28 + 4x SFP28 (*assuming* they can be used as regular ports and they support a x4 breakout).

    Warning, it'll be very noisy!
     
    #5
  6. mb300sd

    mb300sd New Member

    Joined:
    Aug 1, 2016
    Messages:
    24
    Likes Received:
    6
    Didn't know that 40Gb was possible over the existing fiber. Already running some 40Gb gear, so those transceivers are perfect. Actually gets me more bandwidth than the 25Gb upstairs, and the switch and my VM/storage server are in the same room so I'm sure I can get creative with saturating it with cheap gear in there. Thanks!
     
    #6
    Last edited: Aug 7, 2018
  7. maze

    maze Active Member

    Joined:
    Apr 27, 2013
    Messages:
    443
    Likes Received:
    61
    Just keep in mind that 40g is prolly just 4x10g flows..

    Did you check out fs.com gear? - pretty damn cheap for the port speeds..
     
    #7
  8. mb300sd

    mb300sd New Member

    Joined:
    Aug 1, 2016
    Messages:
    24
    Likes Received:
    6
    As far as I am aware, 40GbE is a true 40GB link between the switch and server, while its split into 4x 10Gb on the fiber, it's not link aggregation in the traditional sense. Been on fs.com to look for transceivers, but can get them cheaper used.
     
    #8
    fohdeesha likes this.
  9. fohdeesha

    fohdeesha Well-Known Member

    Joined:
    Nov 20, 2016
    Messages:
    570
    Likes Received:
    407
    #9
    zkrr01 likes this.
  10. tuatara

    tuatara Member

    Joined:
    Mar 2, 2016
    Messages:
    46
    Likes Received:
    8
    Standard 40Gb is 4 simplex 10 Gbps links, so 8 fibers total and generally using 12-fiber MPO. The rarer BiDi transceivers use duplex 20 Gbps on MMF. But in both cases it's the hardware level. Pretty pictures here.
     
    #10
Similar Threads: Cheapest 25/100GbE
Forum Title Date
Networking Cheapest Way to Go 10 Gig or Faster? May 26, 2018
Networking Cheapest way to interconnect SFP+ and 10Gbase-T? Mar 11, 2018
Networking Cheapest Prices on Ethernet Cable? Aug 12, 2016

Share This Page