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Open Issues

Learn about open issues in this release 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

  • VXLAN VNI (multicast learning) scaling on traffic issue is seen from VXLAN tunnel to L2 interface. PR1462548

  • Due to BRCM KBP issue route lookup might fail. Need to upgrade KBP to address this issue. PR1533513

  • Service MIC does not work on ACX500 running Junos 20.4 or higher. PR1569103

  • The issue occurs on ACX5448, MX204, and MX2008 "VM Host-based" platforms. Starting with Junos OS Release 21.4R1 or later, use ssh and root login to copy line card image (chspmb.elf for MX2008) from Junos VM to Linux host during installation. Installation requires ssh and root login. Use deny-password instead of deny as default root-login option under ssh configuration to allow internal trusted communication. See TSB18224. PR1629943

  • On Junos ACX platforms (ACX1100, ACX2100 and ACX2200) the FEB crash might occur. This crash might occur only when the system has encountered a dual parity error on MPLS entry memory in the hardware. There might be an impact on services when the FEB crashes, however, it returns to normal functionality after the crash. PR1632043

  • Interop for 1G interfaces between EX4100 SKUs and ACX5448/ACX5448-M/D or MX480 might not work. PR1657766

  • It is a negative use case and happens when you commit an incorrect configuration and boot the box. PR1658327

  • For MX204, MX10003, and ACX5448 platforms, if you configure a non-default ssh port for system login, after upgrade to Junos OS Release 21.4, the FPC might get stuck in offline. To avoid such issue, use default SSH port and use protect Routing Engine filter to only allow the access from the trusted source.PR1660446

  • In VPLS MH cases, the standby UNI logical interface in backup router is programmed in disable state, by adding the UNI interface to invalid vpn id in HW. During switchover, the UNI logical interface will be deleted and added under the VPLS instance VPN id. In issue case, UNI interface added under invalid VPN id in backup router tries to be deleted by passing the VPLS instance vpn id, causing the issue. This issue is applicable only for ACX5000 Series routers. PR1665178

  • When you connect more than 1 DHCP server to the device and initiate zeroize, it adds multiple routes and the fileserver becomes unreachable after the zeroize if it is not reachable through the default route.PR1675011