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Known Issues


This section lists the known issues in hardware and software in Junos OS Release 16.2R1 for the ACX Series Universal Metro Routers.

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

Firewall Filter

  • Unexpected firewall filter hits are noticed for a short transient time. This occurs during PFE restart for scaled bridge domain filters having destination-mac-address as the match condition. In a dropped packet, if a customer vlan matches with some other service vlan, the log, syslog, or count filter actions will take effect for a short period of time. PR1198151

  • ACX hardware supports unicast reverse-path forwarding (uRPF) mode at physical interface level and Junos OS supports uRPF at logical interface level. To avoid the confusion with respect to the uRPF mode, only one mode (strict or loose) should be configured for all the logical interfaces within a physical interface. This also applies to the logical interface in a bridge domain if IRB is configured and uRPF mode is enabled at the logical interface of IRB. PR1196908

  • ACX hardware does not support uRPF statistics. The values shown in the Junos OS CLI for uRPF statistics at logical interface level can be ignored. As a workaround, you can use uRPF fail filter configuration where firewal filter has count as the action. The fail filter functionality is limited to loose-mode only. Packets dropped specifically due to strict-mode will not hit the fail-filters. PR1188020