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> 10G/2.5G/1G/100 Ethernet are all backwards compatible Not always. The physical layers are incredibly different, and while it is true that most 1G devices als
by pezezin 4y ago
> 10G/2.5G/1G/100 Ethernet are all backwards compatible
Not always. The physical layers are incredibly different, and while it is true that most 1G devices also support 10M/100M, we found the hard way that some 10G switches and NICs don't.
- willis936 4y ago10G no, but all 1000BASE-T NICs require autonegotiation for 10/100/1000 to be compliant.
- Jaruzel 4y agoNICs maybe, but there's a whole heap of cheap home switches and hubs that don't support 10BaseT. I know this from experience.
- Sebb767 4y agoI've also experienced some quite expensive Juniper DC switches not supporting anything below 1Gbit. Fun times.
- dicknuckle 4y agoSome ISP core stuff too.