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Open Issues

Learn about open issues in this release for PTX Series routers.

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


  • While sourcing configuration for EVPN-VPWS, remove control-word configuration inside EVPN-VPWS routing-instance as it is enabled globally by default configuration.PR1698059

General Routing

  • Below is the expected performance for this 21.4. Profile Freq (Hz) NoiseTransfer_0_00391_Results PASS PASS NoiseTransfer_0_00781_Results FAIL FAIL NoiseTransfer_0_01563_Results FAIL FAIL NoiseTransfer_0_03125_Results FAIL FAIL NoiseTransfer_0_06156_Results FAIL FAIL NoiseTransfer_0_12313_Results FAIL FAIL NoiseTransfer_0_24625_Results PASS PASS NoiseTransfer_0_4925_Results PASS PASS NoiseTransfer_0_985_Results PASS PASS NoiseTransfer_1_985_Results PASS PASS NoiseTransfer_3_985_Results PASS PASS NoiseTransfer_7_985_Results PASS PASS PR1624502

  • Layer 2 related daemons - lacpd, ifmand, and arpd - when patched using JSU might cause the Junos Evolved device to not boot up. PR1676132

  • G.8273.2 Synce to PTP and SyncE to 1PPS Transient Response test fails. PR1681527

  • Class B performance as per G.8273.2 fails for SyncE to PTP and SyncE to 1pps noise transfer for lower frequencies. PR1681884

  • Class B performance as per G.8273.2 shall be supported only when FEC is enabled on both the primary and secondary ports of the T-BC(default option).PR1683579

  • With Sharding enabled, BGP flags like the following are not displayed on Active route in show route extensive output: Accepted Multipath MultipathContrib MultiNexthop per shard view, using show route extensive <prefix> rib-sharding <shard-name> will show these flags. PR1693207

  • Junos has a limitation of 255 characters for resource names. Increasing the limit will have implications on the CLI output and same changes will needed to be propagated to lower layers where the resources are served from. PR1695980

  • On Junos OS Evolved Platforms, any UI (user interface) set (configuration, script, license) changes done post software addition were being lost after the subsequent reboot.PR1699699

  • Lo0 filter change might trigger parity error, when filter is changed from ISF to Non ISF or vice versa. PR1709204

  • On all Junos OS Evolved platforms, after deleting the routing-instances and then doing a rollback, will stop the working of RIB-filtering (Routing Information base) in BMP (BGP Monitoring Protocol).PR1715886

  • The PPS reported for the interface might fluctuate for a few seconds and show either higher or lower value. The chance of this happening is very rare. PR1723808

  • On PTX10004, PTX10008, and PTX100016 Junos OS Evolved, hardware core is generated when FTC(fan tray controller) is inserted. PR1724151


  • A Use After Free vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). PR1636063

Interfaces and Chassis

  • On Junos OS Evolved PTX10003, when set chassis fpc <fpc-slot> pfe <pfe-id> power (off|on) is configured and an image upgrade is performed, certain applications like rpd-sa-agent, rptmd, dot1xd, etc might fail to start post upgrade is completed. Related features and functionalities associated with these applications will not work. PR1705725

Network Management and Monitoring

  • When you configure maximum-password-length and try to configure password whose length exceeds configured maximum-password-length, an error messgae is generated along with ok tag. The configuration does not get committed. PR1585855

  • On Junos Evolved platforms, SNMP walk table (ipNetToMediaPhysAddress) is not updated when a neighbour entry is configured. PR1704878

Routing Policy and Firewall Filters

  • Delete single prefix from prefix-list will cause all the prefixes to be deleted. PR1691218

User Interface and Configuration

  • The system might ask for password when you save the configuration file. PR1665008

  • Committing the wild-carded groups related configuration causes the configd-streamer process to generate core files, which is used in the reported fusion test case. PR1674890

  • In Junos OS Evolved, during scaled configuration commit, Configd daemon in UI-infra is taking more time to process the commit. To optimise the processing time, most likely there will be design change required. There is no LKWR or pass instance. Also based on the configuration scale and the time taken for the commit to complete, it seems that this is a Day-1 issue.PR1701214