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Open Issues

Learn about open issues in Junos OS Release 22.1R1 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

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

  • On ACX5448 routers with VM host-based platforms, starting with Junos OS Release 21.4R1 or later, you need the ssh and root login for copying line card image (chspmb.elf for MX2008) from Junos VM to Linux host during installation. You need the ssh and root login during installation. Use deny-password instead of deny as default root-login option under ssh configuration to allow internal trusted communication. PR1629943

  • Junos OS does not support Hierarchical-scheduler (HQOS) on MPLS (core facing) interface on ACX5448 routers before Junos OS Release 22.2. Enabling HQOS on MPLS core facing interface causes unexpected traffic forwarding behavior. PR1630086

  • Late drops are not at par with PN configured. PR1630724

  • On ACX5048 and ACX5096 routers, Junos OS does not support interface speed 10m on 1G interface. PR1633226

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

  • When ACX710 and ACX5448 routers work as the PE device nodes in the Layer 3 VPN environment, the router might stop forwarding the Layer 3 VPN traffic after core-facing link flaps. This occurs due to a race condition that happens during the Layer 3 VPN next-hop programming in the Packet Forwarding Engine. PR1635801

  • On ACX platforms, 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