This section contains the known behavior, system maximums, and limitations in hardware and software in Junos OS Release 17.4R2 for PTX Series.
For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.
For CFP2-DCO-T-WDM-1 pluggable, Rx payload type is shown incorrectly. PR1300423
On PTX (GingerAle PIC on Gladiator FPC), when backward frr is enabled on far end the convergence time is higher as extra delay (average 500 msec) incurred in triggering FRR, due to software based polling. PR1303820
Forwarding-option filter (FTF) with DSCP action is not supported on PTX1000 and other PE chipset platforms. PR1310747
In the specific case of semi-graceful RCB reboot initiated by the internal shell command: 'vhclient init 0', GRES takes longer to complete i.r 3 minutes as opposed to 21 seconds. The regular cli command: 'request vmhost reboot' (graceful) and a jack-out-jack-in of the RE (ungraceful) do not exhibit this delay. PR1312065
Interfaces and Chassis
On PTX10008 and PTX10016 routers, if you remove the redundant Switch Interface Board (SIB) after upgrading Junos OS from Release 17.4R1 or Release 17.2X75-D90 to a later release, then an alarm is not generated. This is a known behavior and has no impact on the performance of the router.