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I enabled LLDP logging on that interface:
Sep 1 16:35:58.208503 intf Inside lldp_handle_ifl_event for ge-0/0/2.16386 ifl event 4Sep 1 16:35:58.208516 intf Inside lldp_handle_ifl_delete for ge-0/0/2.16386 ifl deleteSep 1 16:35:58.208522 config ifl (ge-0/0/2.16386) proto: 1Sep 1 16:35:58.208528 config Disabling ge-0/0/2.16386 fsm on ifl(lldp) for proto 1Sep 1 16:35:58.208531 config DCBX delete interface: ge-0/0/2.16386Sep 1 16:35:58.208535 config Proto 1 LLDP, no deletion of PPM state when LLDP-MED configuration is presentSep 1 16:35:58.208538 config ifl (ge-0/0/2.16386) proto: 4Sep 1 16:35:58.208542 config Disabling ge-0/0/2.16386 fsm on ifl(lldp) for proto 4Sep 1 16:35:58.208549 config Proto 4, no deletion of PPM state when LLDPconfiguration is presentSep 1 16:35:58.208553 rtsock Delete context 1 for ifl ge-0/0/2.16386Sep 1 16:35:58.208557 intf Inside lldp_handle_ifd_delete, Send request to detach LLDP filters for intf ge-0/0/2Sep 1 16:35:58.209367 proto Delete rdb . cleaning up dcbx smSep 1 16:35:58.209397 proto tlv event is 2Sep 1 16:35:58.209419 proto lldp_delete_rdb: The deleted rdb record's ifl =ge-0/0/2.16386,msap_id=\x04\x0w'\x14▒Sep 1 16:35:58.209923 proto TTL expiry for RDB neighbor count on ifl(ge-0/0/2.16386) = 0Sep 1 16:35:58.209934 rtsock deleting ifl ge-0/0/2.16386 iflidx 343Sep 1 16:35:58.209938 config Deleting ifl ge-0/0/2.16386Sep 1 16:35:58.209951 proto Deleted all vmembers from ifl ge-0/0/2.16386Sep 1 16:35:58.209957 jvision lldp_telemetry_handle_intf_change: interface ge-0/0/2 delete event
Those delete operations seem strange for a simple fact like adding a description on the interface
What does this show before and after adding the interface description?
show configuration | display inheritance | display set | match xe-0/0/23:1