I had this happen between an mx and a Palo Alto firewall a few days ago (after upgrading the firmware on the firewall). I ended up rebooting the pic on the mx to get it back up.
On Sat, May 11, 2019, 08:09 Jason Lixfeld <jason-j...@lixfeld.ca> wrote: > No dice for either reed-solomon/fec91 or no error-correction encoding/fec > none. > > > On May 11, 2019, at 9:28 AM, Tim Jackson <jackson....@gmail.com> wrote: > > > > Check FEC settings. Try turning FEC on or off on both sides. > > > > Arista: (config-if)#error-correction encoding reed-solomon > > > > Juniper: set interfaces et-0/0/1 gigether-options fec fec91 > > > > On Sat, May 11, 2019, 6:32 AM Jason Lixfeld <jason-j...@lixfeld.ca > <mailto:jason-j...@lixfeld.ca>> wrote: > > 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 <e...@telic.us <mailto: > e...@telic.us>> 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 <juniper-nsp-boun...@puck.nether.net <mailto: > juniper-nsp-boun...@puck.nether.net>> On Behalf Of Jason Lixfeld > > > Sent: Friday, May 10, 2019 6:13 PM > > > To: juniper-nsp <juniper-nsp@puck.nether.net <mailto: > juniper-nsp@puck.nether.net>> > > > 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 juniper-nsp@puck.nether.net <mailto: > juniper-nsp@puck.nether.net> > https://puck.nether.net/mailman/listinfo/juniper-nsp < > https://puck.nether.net/mailman/listinfo/juniper-nsp> > > > > > > > > > --- > > > This email has been checked for viruses by Avast antivirus software. > > > https://www.avast.com/antivirus <https://www.avast.com/antivirus> > > > > > > > _______________________________________________ > > juniper-nsp mailing list juniper-nsp@puck.nether.net <mailto: > juniper-nsp@puck.nether.net> > > https://puck.nether.net/mailman/listinfo/juniper-nsp < > https://puck.nether.net/mailman/listinfo/juniper-nsp> > > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp