5 ms·
FYI, 25gbps ethernet is gaining in popularity much quicker than 40gbps ethernet. Mostly from cloud/scale-out stuff.
by scurvy 11y ago
FYI, 25gbps ethernet is gaining in popularity much quicker than 40gbps ethernet. Mostly from cloud/scale-out stuff.
- pavs 11y agoI always get confused with these, but are sfp/sfp+ ports also called ethernet ports? For whatever reason I associate ethernet with cat5/6 cable ports.
- dsp1234 11y agosfp/sfp+/qsfp are just the connector types, and can terminate cables that are made of copper or fiber. This is a separate issue from what protocol (ethernet/infiniband/etc) is running over that cable. For an example, take a look at Mellanox's cable page which lists a large number of combinations of connectors and cable types. So in general, to call a random sfp cable/port an ethernet port would be confusing unless both parties already knew it was passing ethernet traffic. http://www.mellanox.com/page/cables http://www.mellanox.com/page/cables
- pavs 11y agoThanks for the explanation.
- ecnahc515 11y agoI'm mostly mentioning this because it's something I just recently re-learned about. The actual connector and cable are mostly independent of each other. The most common connector for an ethernet cable is RJ-45 (what you're referring to as "ethernet ports"). But it's just as possible to have SFP, coaxial, or USB even.
- nocarrier 11y agoHmm, that's interesting. We never did 25 and went to 40 and 100. Well, 10 for normal hosts, 40 for top of rack switches and heavy i/o hosts, and 100 and beyond for future TOR and aggregate switches.
- scurvy 11y agoIt's mainly cost savings due to the simplicity of 25gbps ethernet vs 40gbps. This article has a good run-down: http://searchnetworking.techtarget.com/feature/25-Gigabit-Ethernet-Why-that-why-now-and-whats-next http://searchnetworking.techtarget.com/feature/25-Gigabit-Et...