I had no idea auto-negotiation was still a thing with 100G, but in any event, toggling auto negotiation didn’t work.
> On May 11, 2019, at 2:21 AM, Eric Krichbaum <[email protected]> wrote: > > I had a similar issue with 18.x and MX204. Did you try turning off > auto-negotiation? > > set interfaces et-4/0/52 ether-options no-auto-negotiation > > I had a similar issue with QFX5100/EX4300 and 40G and this fixed the issue > oddly enough. > > Eric > > -----Original Message----- > From: juniper-nsp <[email protected]> On Behalf Of Jason > Lixfeld > Sent: Friday, May 10, 2019 6:13 PM > To: juniper-nsp <[email protected]> > Subject: [j-nsp] QSFP28 oddities between Arista and QFX after upgrade > > Hey, > > I have a QFX5110 in the lab which I upgraded from 17.something to 18.4 to > resolve some ISIS weirdness. ISIS weirdness resolved, but now the previously > working link between this QFX and an Arista 7280SR no longer comes up, > despite light levels on both sides being within norms. I went from 18.4 to > 19.1 just for the hell of it, and still no bueno. > > The QSFP28 in the QFX comes up if it’s looped to itself, as does the QSFP28 > in the Arista. The Arista QSFP28 links to another Arista, or an MX204. The > QFX QSFP28 links to the same MX204 as well (no other QSFP28 gear to test with > otherwise) so it seems to be a weird compatibility issue between the Arista > and the QFX? > > Does this sort of thing smell familiar to anyone? I’ve had pretty good luck > with 100G compatibility in general so far, so I’m not overly familiar with > any knobs to work around any compatibility issues that may creep up here or > there, so happily accept some pointers if anyone has some clue. > > Thanks! > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
