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Known Issues

This section lists the known issues in hardware and software in Junos OS Release 15.1F2 for the PTX Series.

For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.

General Routing

  • The PTX Series does not support the queuing PICs. However, by default, Junos OS will program chassis scheduler map which will generate the following logs: "fpc2 COS(cos_chassis_scheduler_pre_add_action:2140): chassis schduler ipc received for non qpic ifd et-2/1/3 with index 131 /kernel: GENCFG: op 8 (COS BLOB) failed; err 5 (Invalid)Fix: Adding check to stop sending chassis scheduler map on PTX platform." Fix: Adding check to stop sending chassis scheduler map on PTX Series platform. PR910985

Interfaces and Chassis

  • In rare case, when a child link flaps within an aggregate bundle which happens twice within a short period of time (that is, if the child interface comes up within a short period of time after it has gone down), there is a probability that a race condition might happen. The result is to have child NH within aggregate NH to be in "Replaced" state on the FPC, leading to traffic blackholing. PR1032931
  • On PTX Series routers, optical threshold value is shown incorrectly for the interfaces in the PIC P1-PTX-2-100G-WDM. PR1084963
  • On PTX platform "cfp_lh_update_1sec_pm_var received" messages are periodically logged with Warning level. The severity of this message has been revised. PR1089592


  • In the output of the CLI command "traceroute mpls ldp", the addresses of the interfaces on transit PTX Series routers might be shown as "". PR1081274

Routing Protocols

  • On shmlog unsupported platforms (for example, PTX Series and T Series platforms), the following message might be seen after a configuration change: PTX-re0 rpd[42030] shmlog not initialized for PIM - not provisioned in platform manifest file. The message does not indicate an error; it just indicates that shmlog is not supported on the PTX Series. The severity of the log has been reduced to INFO. PR1065055
  • In IS-IS environment, MPLS LSPs are established, and when IS-IS traceoptions flag "general" is activated, the LSP convergence time is increased. PR1090752

Related Documentation

Modified: 2017-07-06