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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 Evolved defects, use the Juniper Networks online Junos Problem Report Search application.

General Routing

  • IPv6 transit traffic statics output is missing. PR1662174

  • With dhcp-snoop configuration, jdhcpd might crash during configuration commit on Junos OS Evolved based platforms.PR1688644

  • On all Junos Evolved platforms, configuring Link Layer Discovery Protocol (LLDP) with system services netconf notification enabled triggers l2cpd crash. This crash causes the CPU to spike.PR1695057

  • In ACX7509, time error spike is seen with PTP long. runPR1697093

  • We might encounter jdhcpd core during initialization. This is rare, and there is no service impact because of this core (as the process recovers immediately). PR1730717

  • ACX7348: 400G-AOC module support is not available in Junos OS Evolved Release 23.4. PR1732958

  • Servo sends some of DEL-REQ pakcets to 0:00:00:00:00:00. This is seen when moving the port from 400g to 25g/40g/100g.PR1740612

  • During a continuous network churn, following errors related to pfe-spec filters are seen for Packet Forwarding Engine applicaiton (evo-pfemand). [Error] compName = BrcmPlusMcast", tpName = "Irb", msg = " fn = installUnknownMcastLexemEntry, failed filter install for unit = 0, bdIndex = 3.PR1748663

  • In ACX7509, syncE clock failure is seen on 4x100G channelized interface. PR1756587

  • Test chassis fpc slot <> power on or off command does not work on ACX7348.PR1757288

  • In scaled aggregated Ethernet cases during Routing Engine switchover when backup Routing Engine becomes primary, it takes upto 20 minutes for aggregated Ethernet interfaces statistics to be correctly reflected. The aggregated Ethernet traffic flows correctly and does not see any impact.PR1757394

  • For heavily scaled VPLS scenarios (8K instances) , sometimes after a restart fpc command, a few MAC entries are not programmed in hardware. This issue is not seen in normal use case and with reduced scale.PR1759887

  • In Junos OS Evolved 23.4 on ACX7348 syslog messages related to PEX configuration are seen at bootup with sib-slot which should be corrected as cb-slot in later releases. Example: Current log syslog(LOG_INFO, "%s: sib%d: pexsw bringup successful", __func__, board_slot); Expected log: syslog(LOG_INFO, "%s: cb%d: pexsw bringup successful", __func__, board_slot);PR1761710

  • On Junos OS Evolved ACX7024 and ACX7024X platforms, any MPLS encapsulated packet with a size less than or equal to 35 bytes on the 25G/10G/1G ports [Port No 4 to 27] gets dropped. The issue can also be observed in Point-to-Point Protocol over Ethernet (PPPoE) over Layer 2circuit scenario. PR1766889

  • IPTV traffic is not forwarded to test agent. This is because route update comes before the filter add. Route update checks if netrounds filter is present. If so, punts the packet to netrounds queue. Otherwise it does not punt. Since filter add comes 10 minutes later, the traffic is not punted to netRounds Queue.PR1771527

  • The following error message is seen with the delete vlan event trigger when configured with multiple VLANs with IRB and IGMP snooping/MLD snooping enabled. No functionality impact. Error] compName = "BrcmPlusMcast", tpName = "Irb", msg = " fn = removeMemberFromL3FloodMcastGrp.PR1771915

  • When the chassis is running headless (both the Routing Engines are removed from the system), peer interface remains up giving false indication that the link is up. PR1775785
  • 3% traffic drop is seen for some l2vpn instances after flapping the aggregated Ethernet interface which can be recovered by deactivating and activating that l2vpn instance in config. PR1777608

  • We need to wait for the FPC and PIC to come online before the restart FPC command is executed. When the first restart command of the FPC is executed, it puts the FPC and the PIC offline and then online. Till both the FPC and PIC status is not shown online in show chassis fpc pic-status the next restart command for same FPC should not be attempted. PR1778163

Interfaces and Chassis

  • On the ACX7024 platform, the tear-down rate is low. This is due to system CPU limitations.PR1659593