On Tue, Dec 11, 2007 at 12:37:03PM -0500, Richard A Steenbergen wrote: > On Tue, Dec 11, 2007 at 12:16:23PM -0500, Chuck Anderson wrote: > > I don't think so, although what I said may be limited to copper links > > only: > > > > http://en.wikipedia.org/wiki/Autonegotiation > > > > "The debatable portions of the autonegotiation specifications were > > eliminated by the 1998 release of 802.3. This was later followed by > > the release of IEEE 802.3ab in 1999. The new standard specified that > > gigabit Ethernet over copper wiring requires autonegotiation." > > What they mean to say is that autonegotiation SUPPORT is mandatory (i.e. > as a hw manufacturer you must implement it), but it is not mandatory that > you USE it (it can still be disabled). This is in contrast to FastE > autonegotiation, which was originally optional and had many problems with > interoperation between vendors due to an ambiguous specification. With > 10GE, it is actually mandatory that you use it (i.e. as a user there is no > command to disable it).
Actually no you're right about the requirement for autonegotiation on copper. It is a requirement under 802.3ab to use autonegotiation when doing GigE over 1000BASE-T. It is not a requirement with other GigE imeplementations where it can be turned off completely, and half duplex is still a supported and negotiable option. -- Richard A Steenbergen <[EMAIL PROTECTED]> http://www.e-gerbil.net/ras GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC) _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
