> > One tantalizing > clue was another customer using Cisco Nexus had better results after > they enabled "link transmit reset-skip" > (https://quickview.cloudapps.cisco.com/quickview/bug/CSCvi45168). Not > clear exactly what that option does, and there doesn't seem to be an > obviously equivalent config knob in Junos.
I have a vague recollection of that option being there to basically ignore certain events that would normally cause link drop in order to keep an unstable link up. It was a long time ago, I sent a message to the guy I used to work with who might remember more. On Fri, Jan 10, 2025 at 3:00 PM Oliver Garraux <oli...@g.garraux.net> wrote: > We have a number of new 400G provider waves with odd flakiness that we > can't seem to sort out. > > These links appear good - light levels are fine, links will be up with > working LLDP. But if we admin down / up the link on the IP side, many > of them won't come back up on their own. Our provider sees "loss of > alignment" alarms on the optical equipment, and we can eventually get > the links back up if they bounce them a few times on the DWDM side. > > We're using Juniper PTX's, with Juniper 400G FR4 and 400G LR4 optics. > Same issue on different circuits/devices/paths with this provider, but > no issues with other transport providers using the same optics on our > end. Believe our provider is using Ciena optical equipment. > > Has anyone seen issues like this before? Our provider has been > looking into this for months without much progress. One tantalizing > clue was another customer using Cisco Nexus had better results after > they enabled "link transmit reset-skip" > (https://quickview.cloudapps.cisco.com/quickview/bug/CSCvi45168). Not > clear exactly what that option does, and there doesn't seem to be an > obviously equivalent config knob in Junos. > > Thanks, > Oliver >
