10Gtek 100G QSFP28 DAC Cable - 100GBASE-CR4 QSFP28 to QSFP28 Passive Direct Attach Copper Twinax Cable for Juniper JNP-100G-DAC-3M, 3-Meter(10ft)

Good quality, works as advertised with Juniper EX4300 40Gbe ports

Works great in our Juiper MX204 devices. No issues. Quality built.

Needed these to work with some Juniper 2300s in lab, no issues so far and working well.

I bought a pair of these to use in my home lab. My company sent me a pair of EX3400 switches. Rather than spending tons of money on optics and cables, I decided to try these out after a recommendation on reddit. I'm a CCNP R/S, but my specialty is VoIP. So I'm not always up to date on datacenter fabric connections. These worked like a charm, and I was able to set up a virtual chassis with little effort. I was able to split port channels between the chassis. Everything works exactly as I would want. No errors from the switches. I'm currently running Junos 20.4R1.12. Since this is a lab, I cant comment on how they'd hold up in an actual datacenter application. But I would imagine they would work just fine.

Works perfectly between a Juniper router and Arista switch, when a competitor’s wasn’t even properly recognized. We have a pair of these cables running a 200Gbps link aggregation between the two devices Dressing this neatly is a bear because it is so thick and stiff, but that’s par for the course with DACs, especially at these speeds. They stick too far out of the front of the device with a bend radius that just won’t work with most cable management designed with Cat6A and fiber in mind. There’s always 100GBase-SR4 at 4x the price if it’s that a big deal. You buy DACs because they’re cheap, fast, and low power, not because they’re pretty. This one passes our tests for all three.

Very good product - works in all of our Juniper gear including the latest JunOS release. Excellent post-sales customer support as well.

This cable works good for a 10g ethernet connection between computers.

This would not bring up a link on my 8152-del. Admittedly these cards are very finicky but the cards cable part number is listed and matches those listed on QLogic/Dells web documentation. I have purchased other cables (at 4x the price) that work just fine. Maybe they will work for other cards but now for me. It was worth a try.