It seems our RIPE Atlas probe in eqsin has been offline since 01:18 UTC on Dec 17th.
Similar to the one in eqiad (see T382518), though I believe it is just a co-incidence. Same symptoms, the port is up but device is unresponsive and we don't see a MAC address on the port:
cmooney@asw1-eqsin> show interfaces descriptions | match atlas
ge-1/0/22 up up atlas-eqsin {#1049}
{master:0}
cmooney@asw1-eqsin> show ethernet-switching table interface ge-1/0/22.0
MAC database for interface ge-1/0/22.0
{master:0}
cmooney@asw1-eqsin>Port bounced to no avail. Not sure what the best way forward is, a power cycle for sure should be the first step if we want to schedule that with remote hands. Device is in rack 604 U36.