Known Limitations

The time delay on GNF reconnect is due to socket drop on alarmd and chassis went for a reconnect, during this reconnect process the ready messages from GNFs are ignored until the chassis reconnect timer is expired. The socket drop on alarmd and reconnect is expected while performing GRES. PR1771319

The error message received IFD attach for interface name with PIC in Offline or Offline wait state.Ignore it , IFFPC: ifd detach returned error 7 is usually observed when a PIC reconfiguration is triggered while the IFDs are still getting installed at the linecard. PIC reconfiguration is mainly due to a PIC mode change. Before triggering a pic mode change, in addition to checking the state of the pic mode that is, if the PIC is online, also verify that the IFDs are attached correctly either by allowing adequate delay between PIC bounce (approximately 3 to 5 minutes) or observing logs.PR1774974

The error message is observed when a PIC reconfiguration is triggered while the IFDs are still getting installed at the linecard. PIC reconfiguration is mainly due to a pic mode change. Before triggering a pic mode change, in addition to checking the state of the pic mode i.e if the PIC is online, also verify that the IFDs are attached correctly either by allowing adequate delay between PIC bounce (~3-5mins) or observing logs.PR1780251

L2cs upgrade failure occurs when you run the jfirmware upgrade. PR1783364

If SGRP over subscription is configured for a BNG-UP port which hardware doesn't support over subscription it still accepts the port into the SGRP. The result is subscribers are not handled properly. PR1791676

1PPS performance drop is seen during clksyncd process restart with 1588 default profile. Its a baseline Mx Aloha line card behaviour. PR1796244

show system license output does not display hardware based licensing details. show system license bandwidth flex-only output displays linecard specific bandwidth details. It makes the calculation very complicated to add advance/premium details to this output. Tier can be chassis, linecard or port based. Bandwidth details is for all ports of the linecard irrespective of the tier of each port.PR1797309

When we first create a route record in the client DB, the Berkeley DB (BDB) module opens a file and creates a record. Now, if there are two REs, the BDB module will sync this DB file to the backup RE. Till now, the file management is being exclusively handled by the BDB module. Now, if the client deletes all the routes and goes away and now if PRPD tries to do the file management instead of Berkeley DB and deletes the file, it can do this only on the master RE. Now, if the RE switchover happens, the DB file will still exist in the backup RE. Juniper's BDB module is responsible for managing the files and it doesn't provide a remove function which will keep the files in sync across master and backup RE.PR1801509

MPC11 In-Service-Software-Upgrade command fails from Junos OS release 24.1R1 to 24.2R1 and causes MPC11 linux crash. The issue only applies to ULC image.PR1803205

40g interface doesnt support EM policy feature but it will still display in the cli output of show chassis temp-threshold as it gets created as "et" interface. PR1807219

MX Bandwidth alarms are refreshed at the configured log interval (default 06:00AM). Any usage changes within this interval which maintains license non-compliance will not raise new alarms just for the changed in license-needed value. Real time license-needed value is updated in the output of "show system license"PR1853132

Issue was seen when test was done back to back GRES within 5mins time. this is expected behavior from the system as per current architecture. Suggestion is to wait for sometime before maybe 10 minutes or so for subsequent GRES. PR1801234

When global level changes are made like changing Mac-age, with large scale and high CPU a watchdog core is generated without any functional impact. The config change is pushed from l2alm to pfe, which loops through all the RTTs and associated bd and ifbd. If the process is not yielded within 240sec, the pfeman watchdog is called in and writes a core. PR1775966

On Junos and Junos Evolved platforms, protocol isis is supported a rare display issue is seen ISO address is not being picked up properly and Sysid is not showing the proper valuePR1726823

In Junos OS Release 17.4 and later, subscriber sessions on the LNS that send an ICRQ that includes RFC5515 AVPs may fail to establish a session. The client will receive a CDN error "receive-icrq-avp-missing-random-vector" in response. PR1493289