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Open Issues

Learn about open issues in Junos OS Release 21.4R1 for ACX Series routers.

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 ACX710 routers with the console cable plugged in might find interruption in the system boot. PR1513553

  • On ACX5448 routers, ping stops working even though the ARP entry is present during continuous script executions. PR1533513

  • When you configure the multihop BFD, the delegated BFD sessions do not come up. PR1633395

  • On ACX VM host-based platforms, starting in Junos OS Release 21.4R1 and later, ssh and root login are required for copying line card image from Junos VM to Linux host during installation. The ssh and root login are required during installation. Use the deny-password instead of deny as default root-login option under ssh configuration to allow internal trusted communication. Alternatively, once installed, it can be disabled in the configurations. Refer to PR1629943

Routing Protocols

  • FIPS mode enabling fails with self-test failure and kernel crash. PR1623128