On 1/18/16, Saku Ytti <[email protected]> wrote: > On 18 January 2016 at 21:22, Lee <[email protected]> wrote: >> so apparently 100Mb fiber doesn't have that problem any more. I don't >> think 1 or 10Gb fiber ever did.. > > > I believe if you implement autonego, you have to implement RFI. But > I'm not 100% sure about that. > > IEEE 802.3 standard isn't exactly easiest standard to read. But there > are quite many surprising goodies in autonego which are usually not > known, not just RFI. Autonego can assert when link is configured > operationally down, meaning far-end could produce syslog information > about link going down, because far end was configured down, which > would help lot with troubleshooting, when you can know if far-side is > intentionally down or not. > My understanding of reading hardware specs is that this feature is > even supported in typical PHY, however I've NEVER seen software using > this feature. > > I'd love recommendation on good, modern book about 802.3, with > irrelevant bits not addressed, relevant bit discussed and practical > view offered on how things are actually implemented in modern, common > hardware. So far any book I've read, does not even discuss autonego in > satisfactory detail, and I fear what else am I missing due to my > unwillingness to weed through 802.3.
If you get any off-list replies please post a summary. I haven't seen any good books about ethernet in ages, but I haven't really been looking either. Lee _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
