Hot!FGT100F 10Gb Uplink to HPE SN2100M Switch through 100Gb to 4x25Gb Breakout Cable possible?

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futureweb
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2021/02/25 08:33:27 (permalink)
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FGT100F 10Gb Uplink to HPE SN2100M Switch through 100Gb to 4x25Gb Breakout Cable possible?

Hey there,
we need to uplink our 2x SN2100M Switches to a FGT100F.
does anyone know if the FGT100F happens to be compatible with the HPE 100Gb QSFP28 to 4x25Gb SFP28 3m Direct Attach Copper Cable? (https://buy.hpe.com/us/en/options/cables-cable-kits/direct-attach-copper-active-optical-cables/direct-attach-copper-cables/hpe-direct-attach-copper-cables/hpe-100gb-qsfp28-to-4x25gb-sfp28-3m-direct-attach-copper-cable/p/845416-B21)

Unfortunately, the firewall in our DC is 400km away, so I can't just test it out quickly.

The 2xSN2100M are configured as MLAG and I would like to wire the FGT100F to each one of the 2 switches using LAG (LACP ??)

Many Thanks, bye from Austria
Andreas
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    futureweb
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    Re: FGT100F 10Gb Uplink to HPE SN2100M Switch through 100Gb to 4x25Gb Breakout Cable possi 2021/02/25 09:15:21 (permalink)
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    This would be the planed Setup with the FGT100F + 2x HPE SN2100M
     

     
    If the Breakout Cable wouldn't work we would need to solve it through SFP+ Plug, Fibre Cable + QSFP28 Plug on Switch Side ... would like to avoid that because the SN2100M already has only a few ports and we would have to use 1 port per switch for the uplink that we could otherwise use for 4x25Gb ... ;-)
     
    thx
    Andreas
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    Toshi Esumi
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    Re: FGT100F 10Gb Uplink to HPE SN2100M Switch through 100Gb to 4x25Gb Breakout Cable possi 2021/02/25 11:05:25 (permalink)
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    First I have to tell I'm no expert about QSFP28 100G ports. But I found this FS.com's article saying the port config needs to be changed to 40G then QSFP+ - 4xSFP+ DAC cable can connect between them, which kind of make sense to me. 10G side talks 10Gig only so it doesn't care if it's SFP+ or SFP28 modules. But 100G can split only to 4x25G, not to 4x10G.
    #3
    Toshi Esumi
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    Re: FGT100F 10Gb Uplink to HPE SN2100M Switch through 100Gb to 4x25Gb Breakout Cable possi 2021/02/25 11:10:25 (permalink)
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    futureweb
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    Re: FGT100F 10Gb Uplink to HPE SN2100M Switch through 100Gb to 4x25Gb Breakout Cable possi 2021/02/26 01:54:00 (permalink)
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    Hey Toshi,
    thx for your reply! :-)
    The SN2100M are capable of 10/25/40/50/100Gb on their Ports, so this shouldn't be a Problem.
    I am more wondering whether the Fortigate can handle a third-party DAC plug.
    Especially with switches, I know that the devices are very sensitive if they are not an original DAC from the manufacturer.
    With Fortigate I got no empirical values so far because no DAC has yet been installed in Fortigate by me.
    Andy
    post edited by futureweb - 2021/03/01 01:16:11
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    Toshi Esumi
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    Re: FGT100F 10Gb Uplink to HPE SN2100M Switch through 100Gb to 4x25Gb Breakout Cable possi 2021/02/26 07:58:46 (permalink)
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    As there are some posts in the past for this topic, FGT doesn't check vendor ID on SFPs. I'm naturally assuming SFP+s as well.
    #6
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