Best place to source Juniper DAC/twinax for a EX3300

Discussion in 'Networking' started by whitey, Oct 29, 2015.

  1. whitey

    whitey Moderator

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    Having a tough time finding a decent source/deal for twinax cables for my Juniper EX3300. Anyone know a solid source that won't break the bank?

    Either of these or other compat cable for fiberstore (fs.com) seems to be pretty high priced. Could have sworn these went for $30 each or so max.

    EX-SFP-10GE-DAC-1M
    EX-SFP-10GE-DAC-3M

    On a side note, why is FS shipping so damn high?

    Thanks, whitey
     
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    Last edited: Oct 29, 2015
  2. whitey

    whitey Moderator

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  3. Blinky 42

    Blinky 42 Active Member

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    I have used Intel and Cisco DAC cables (and some others, everything but Juniper ones really) without problems on my EX3300's
     
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  4. whitey

    whitey Moderator

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    EDIT: looks like passive twinax/DAC's are supported on the Juniper EX3300.

    SFP+ Direct Attach Cables for EX Series Switches - Technical Documentation - Support - Juniper Networks (this one seems to indicate passive)

    EX Series switches support SFP+ passive direct attach cables. The passive Twinax cable is a straight cable with no active electronic components. EX Series switches support 1 m, 3 m, 5 m, and 7 m long SFP+ passive direct attach cables.

    https://www.juniper.net/us/en/local/pdf/datasheets/1000389-en.pdf

    Guess last questions is does it freaking matter how they are coded/encoded or microcode check shinanigans/vendor ID in EEPROM/firmware check/optics lock or can I go ahead and try to use my HP passive twinax/DAC cables hooked direct between EX3300 switch and servers w/ Intel X520-DA2 SFP+ NIC action?
     
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    Last edited: Oct 29, 2015
  5. whitey

    whitey Moderator

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  6. Keljian

    Keljian Active Member

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    Try it? It may well be cheaper to get optics and fibre. Optics at fibre store come highly recommended
     
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  7. Blinky 42

    Blinky 42 Active Member

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    If you have cables that work with your HP switch and Intel NIC already I would try them with the Juniper as well. My cables work fine just come up as non-juniper
    Code:
    root@blah-sw7> show chassis hardware | find Xcv
      Xcvr 0  NON-JNPR  TED1545B1EL  SFP+-10G-CU3M
      Xcvr 1  NON-JNPR  TED1545B1EC  SFP+-10G-CU3M
      Xcvr 2  NON-JNPR  MOC153801A3  SFP+-10G-CU3M
      Xcvr 3  NON-JNPR  APF12140033KXQ  SFP+-10G-CU3M
    
    Don't recall which cables are which in the EX's there but one of them is a 5M Cisco, one is a 7M Cisco Active "SFP-H10GB-ACU7M" and the rest are 3M or 1M Intel ones and they all work fine. Some bought new from Newegg, some new/used off of fleabay.
    Only thing that didn't work was the Cisco 7M active with a Mellanox ConnectX3 EN card, but worked between switches just fine. Don't recall if I the 7M Active with the X710-DA4 and the Juniper but could probably arrange it if you are really curious.
    I tried the passive Cisco and Intel cables with my Netgear 10G switches as well and they were fine.
     
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    Last edited: Oct 29, 2015
  8. whitey

    whitey Moderator

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    Much appreciative of the feedback, gonna try what I have out first and cross my fingers, will update thread when I have results.
     
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