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Known Limitations

Learn about known limitations in this release for EX Series switches.

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

Platform and Infrastructure

  • On EX4650 switches, Junos OS does not support the unified ISSU if there is a change in the Cancun versions of the chipset SDKs between the releases. This is a product limitation as change in the Cancun firmware leads to the chip reset and hence ISSU gets impacted. The Cancun versions in the chipset SDKs should be the same between two JUNOS OS releases for ISSU to work. PR1634695

  • On EX4100 switches, the input pps, bps, and byte counters gets displayed as 0 for some ports while traffic runs without any issues. The interface status gets cleared for 0 to 23 seconds and not cleared for 24 to 47 seconds after interface flaps. This is a cosmetic issue related to display and has and no functional impact. PR1657995