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Open Issues

Learn about open issues in Junos OS Release 21.3R3 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

  • For ACX710 devices, if the console cable is plugged in and the terminal connection is active and sending characters to the interface, the system boot might be interrupted and the ACX710 device boot will be stalled at the uboot# prompt. PR1513553

  • Due to BRCM KBP issue, route lookup might fail. PR1533513

  • On ACX5448 devices, the following error message gets generated after you commit a class of service scheduler configuration: LIBCOS_COS_TVP_FC_INFO_NOT_FOUND: Forwarding-class information not specified PR1579009

  • On ACX5448 devices, if you configure hierarchical-scheduler for an interface during interface flap or configuration change, some of the Packet Forwarding Engine buffers might become out of synchronization, which might cause packets drops even without congestion. PR1603622

  • On ACX devices, traffic issue might be observed with downstream devices when you configure the Precision Time Protocol(PTP) (G.8275.1 PTP profile) along with PHY timestamping and Multiprotocol Label Switching (MPLS) terminated on 10G interface. The transit PTP ipv4 packets gets updated with incorrect Correction Factor(CF). This issue could be restored by disabling PHY stamping. However, disabling might impact the PTP performance. PR1612429

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

  • Convergance Time can be more than 60secs for IS-IS TILFA Node protection testing. PR1634033

  • ACX710 and ACX5448 devices working as PE stops forwarding L3VPN traffic after core-facing link flap. PR1635801

  • On ACX5448 devices, if a firewall has a log action and it's applied on physical interface or lo0, the LDP neighbor cannot go up. PR1648968