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Open Issues

Learn about open issues in this release for PTX 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

  • In Junos OS Evolved 22.1R2, fabsopke-fchip core file can be seen if fabsopke-fchip restarts and sib offline happens one after the other simultaneously. Any previous alarm does not get cleared. PR1525577

  • For PTX10001-36MR, the software driver reads the voltage threshold erroneously causing the Host 0 Voltage Threshold Crossed alarm to be present on the device. PR1592258

  • No functionality impact as NSR gets enabled again quickly on all protocols after the error messages. Also errors are mostly seen when rpd-agent crashes. PR1627625

  • MTS-MCAST: [PTX10003] Auto RP base verification fails with multiple RPs with same group range. PR1634982

  • System reboot or boot up with traffic could result in init time fabric link crc errors and cause traffic drop.PR1635178

  • ON_CHANGE Telemetry is not supported in Junos OS Evolved release 20.4X80-D12, 21.2X80-D20, and 21.2X80-D21 for sensors under below path: /components/component/integrated-circuit/backplane-facing-capacity/. Only periodic streaming of these sensors are supported in Junos OS Evolved release 20.4X80-D12, 21.2X80-D20, and 21.2X80-D21. PR1635606

  • On Junos OS Evolved PTX platforms, next-header match in IPv6 firewall filter does not work as expected. Next-header matches the payload-protocol (last-header) on Junos OS Evolved PTX platform. PR1645401

  • Junos OS Evolved PTX Series supports a set of supported matches only. Any match combination that is not supported leads to the incorrect filter behavior. Please remove and readd the original filter to get to the consistent state.PR1648923

  • Junos OS Evolved PTX10003 : Unsupported bit-op-type message seen for tcp flag match - (syn & ack) & !(syn & ack & rst). PR1649253

  • Classifcation override configuration statement does not work for queue 0 to 3 for both IPv4 and IPv6 release.

    • set class-of-service forwarding-policy class to_bronze classification-override forwarding-class bronze

    • set class-of-service forwarding-policy class to_platinum_v6 classification-override forwarding-class platinum

      PR1650622
  • Classifcation override configuration statement does not work for queue 0 to 3 for both IPv4 and IPv6 release.

    • set class-of-service forwarding-policy class to_bronze classification-override forwarding-class bronze

    • set class-of-service forwarding-policy class to_platinum_v6 classification-override forwarding-class platinum

  • Multiple rewrite rules aggregated Ethernet: (mpls-any and mpls-inet-both-non-vpn are not supported on PTX Series running BT ASIC). The order of applying the rewrite rules is not correct. The non-VPN rewrite rule gets effect for the VPN traffic. See Rewriting MPLS and IPv4 Packet Headers.PR1655653

  • On all Junos OS Evolved platforms, an error log from rpd/kernel corresponding to JSR backup registration failed might be observed during extreme scenarios of rpd restart. PR1660685

  • Firewall rule configuration of lo0 interface with option next-header on the egress direction is not supported. Configuring it could cause drop of other protocol traffic. Refer AT 76 for an example of mentioned configuration.PR1672315

Infrastructure

  • On all Junos OS Evolved platforms, near-end port is not within RFC or IANA standards as ephemeral or dynamic port range has been modified. PR1602717

  • On PTX10003 series platforms, the device might panic with vmcore under high memory pressure situations when kernel memory allocation fails.PR1646610

Interfaces and Chassis

  • The memory usage of the rpd process on the backup Routing Engine might increase indefinitely due to leak in krt_as_path_t.PR1614763

  • On Junos OS Evolved platforms during lacpd process restart, child physical interface indexes from the port options physical interface based data which gets stored in kernel by lacpd, might not get reused due to old indexes that are not freed. When this occurs, new indexes might be generated repeatedly which can cause the port numbers exhaustion problem in aggregated Ethernet interface bundle.PR1647145

Juniper Extension Toolkit (JET)

  • In Junos OS Evolved, there are two different gRPC Python files for each JAPI file. The names of the files are pb2_grpc.py and pb2.py. The stub creation functions are present in pb2_grpc.py. PR1580789

  • Until Junos OS Evolved Release 21.3 mgd is 32-bit binary. The libsi can only be linked with 64-bit binaries. To access data or WAN ports in Junos OS Evolved we need libsi to be linked with the binary. By default the shell on the Junos OS Evolved device includes libsi, but it is not available to CLI commands as CLI makes mgd invoke cscript to run a Python script through CLI. PR1603437

Routing Policy and Firewall Filters

  • On Junos OS Evolved 20.4R3 Release, the unsupported configuration of BGP flow spec interface-group exclude might lead to some errors and Packet Forwarding Engine corruption which does not permit filter bind. PR1639391

Routing Protocols

  • When two routers have different system time, with different active auth keys the IS-IS adjacency does not go down.This scenario happens when we enable IS-IS authentication key-chain having multiple keys between routers. The IS-IS adjacency is up because both routers have the same key active. When we manually change the system time in such a way that routers have different keys active in the key chain, the IS-IS adjacency must go down. However, that is not happening. PR1572441

  • On Junos OS Evolved platforms, when configuring the network instance for openconfig, an error might be observed while executing a commit if the configured network instance type is default_instance, however the instance name is not default.PR1644421

User Interface and Configuration

  • Passwordless authentication successful for configured user even after deleting ssh public key details from user login hierarchy. PR1625032

  • Configuration archival (transfer-on-commit) over FTP protocol does not work in Junos OS Evolved. The reason it does not work is, internally a FreeBSD utility (fetch) is used to transfer the archived file. Junos OS Evolved is based on Linux and the fix or solution is to use a utility (cURL here) that is present in Linux. Example config:

PR1625937