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What’s Changed in Release 21.3R2

Class of Service

  • Junos OS Evolved now correctly displays the index for show class-of-service commands.

Network Management and Monitoring

  • SNMP support for MIB—Operational command show snmp mib walk system now shows the latest software version and does not show the build date.

    [See show snmp mib.]

  • Change in behavior of SNMP MIB object ifAlias—SNMP MIB object ifAlias now shows the configured interface alias. In earlier releases, ifAlias used to show configured interface description.

  • Support for disconnecting unresponsive NETCONF-over-SSH clients (ACX Series, PTX Series, and QFX Series)—You can enable devices to automatically disconnect unresponsive NETCONF-over-SSH clients by configuring the client-alive-interval and client-alive-count-max statements at the [edit system services netconf ssh] hierarchy level. The client-alive-interval statement specifies the timeout interval in seconds, after which, if no data has been received from the client, the device requests a response. The client-alive-count-max statement specifies the threshold of missed client-alive responses that triggers the device to disconnect the client, thereby terminating the NETCONF session.

    [See ssh (NETCONF).]

Routing Protocols

  • The RPD_OSPF_LDP_SYNC message not logged—On all Junos OS and Junos OS Evolved devices, when an LDP session goes down there is a loss of synchronization between LDP and OSPF. After the loss of synchronization, when an interface has been in the holddown state for more than three minutes, the system log message with a warning level is sent. This message appears in both the messages file and the trace file. However, the system log message does not get logged if you explicitly configure the hold-time for ldp-synchronization at the edit protocols ospf area area id interface interface name hierarchy level less than three minutes. The message is printed after three minutes.

  • To achieve consistency among resource paths, the resource path /mpls/signalling-protocols/segment-routing/aggregate-sid-counters/aggregate-sid-counterip-addr='address'/state/countersname='name'/out-pkts/ is changed to /mpls/signaling-protocols/segment-routing/aggregate-sid-counters/aggregate-sid-counterip-addr='address'/state/countersname='name'/. The leaf "out-pkts" is removed from the end of the path, and "signalling" is changed to "signaling" (with one "l").

User Interface and Configuration

  • A new field rollback pending is added to the output of show system commit that identifies whether commit confirmed is issued. It is removed once commit or commit check is issued or commit confirmed is rolled back after rollback timeout.

  • When you configure max-cli-sessions at the edit system hierarchy level, it restricts the maximum number of cli sessions that can coexist at any time. Once the max-cli-sessions number is reached, new CLI access is denied. The users who are configured to get the CLI upon login, are also denied new login.