Hi Tim Can confirm I've seen exactly the same issue on QFX5110 18.4R1.8 with the only way I can get fs.com LX 1G transceivers working being turning off auto-neg.
Have also seen strange issues with 1G copper transceivers just not showing up in chassis hardware n some versions, and working fine in older versions. Shaffi -----Original Message----- From: juniper-nsp <juniper-nsp-boun...@puck.nether.net> On Behalf Of Timothy Creswick Sent: Tuesday, 25 June 2019 7:50 AM To: 'juniper-nsp@puck.nether.net' <juniper-nsp@puck.nether.net> Subject: [j-nsp] Link establishment issues with 1Gbps SX/LX SFPs on QFX5110 Hi All, We've been battling with a number of issues getting 1G Base-X links to work on a batch of new QFX5110-48S switches, in use as Fusion devices connected to MX204. No problems with a variety of 10G and 100G connections. A lot of 1G works fine but we seem to have issues with auto-negotiate with both SX and LX optics. JTAC are a bit lost and we've tried a variety of firmwares with varying success. Turning auto-negotiate off on both sides seems to fix most of this, but that's not viable in a lot of cases where there's a 3rd party involved. Anyone seen similar and aware of a fix? Regards, Tim _______________________________________________ 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
