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

Forum|Forum|5 years ago
February 25, 2021
5 replies
9378 views

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

futurewebAuthor

New Member

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

Toshi_Esumi

SuperUser

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.

Toshi_Esumi

SuperUser

Sorry. It would help if I attached the link...

https://community.fs.com/blog/qsfp28-100g-port-plays-with-40g-25g-and-10g.html

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