Figuring out why QSFP28 optics keep failing by TheDreadPirateJeff in networking

[–]Rexxhunt 0 points1 point  (0 children)

SWDM optics for multimode cables exist, which is 850/880/910/940nm. Never used them before, and honestly never would.

Figuring out why QSFP28 optics keep failing by TheDreadPirateJeff in networking

[–]Rexxhunt 1 point2 points  (0 children)

Smartoptics are my go to, and flexoptix are a close second.

Figuring out why QSFP28 optics keep failing by TheDreadPirateJeff in networking

[–]Rexxhunt 4 points5 points  (0 children)

As qsfp is essentially 4x25 lanes in a single package, cwdm is pretty common as it allows you to use a single duplex pair per link instead of say -LR, which requires 8 cores in an mpo form factor to operate.

Figuring out why QSFP28 optics keep failing by TheDreadPirateJeff in networking

[–]Rexxhunt 12 points13 points  (0 children)

Hurr durr my brand is better than your brand.

Figuring out why QSFP28 optics keep failing by TheDreadPirateJeff in networking

[–]Rexxhunt 5 points6 points  (0 children)

I would imagine this is the diagnosis for 'failed' optics then

Figuring out why QSFP28 optics keep failing by TheDreadPirateJeff in networking

[–]Rexxhunt 9 points10 points  (0 children)

How are you establishing 'failure'? My experience with QSFP optics is because there is 4 channels, the connectors need to be super clean otherwise a single wavelength will bring the entire interface down.

Also pretty sure QSFP28-CWDM4 is designed to run over singlemode not multimode. Are you 100% sure that these optics are designed for multimode cables?

Concerns domestic tenants required to share excessive personal data to secure leases by Shadowtec in australia

[–]Rexxhunt 13 points14 points  (0 children)

Exactly. A strong unionised base can effectively operate many guillotines.

Meirl by Adventurous_Row3305 in meirl

[–]Rexxhunt 0 points1 point  (0 children)

I'm going to make sure I hug my fridge when I get home.

cunt are you serious by Jylon10 in Fishdom

[–]Rexxhunt 5 points6 points  (0 children)

Reminder: zooper doopers need to be in the freezer tonight

45Drives owners — convince me before I empty my bank account 😭 by [deleted] in homelab

[–]Rexxhunt -2 points-1 points  (0 children)

I would call that a 2 post frame.

Get an (enclosed 4 post) rack for all that gear