- Introduction
- Cover Page
- play_arrow Junos OS Release Notes for ACX Series
- play_arrow Junos OS Release Notes for cSRX
- play_arrow Junos OS Release Notes for JRR Series
- play_arrow Junos OS Release Notes for MX Series
- play_arrow Junos OS Release Notes for NFX Series
- play_arrow Junos OS Release Notes for QFX Series
- play_arrow Junos OS Release Notes for vRR
- Licensing
- Finding More Information
- Requesting Technical Support
- Revision History
ON THIS PAGE
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.
General Routing
In EX2300, transit ARP requests entering a port can get trapped to the CPU even if no IRB is configured on the VLAN. This can result in unnecessary ARP requests to the CPU and in extreme cases result in drops of genuine ARP requests in the ARP queue to CPU. PR1365642
On EX2300, EX3400,:EX4300-48MP and EX4300 , Pause frames counters does not get incremented when pause frames are sent. PR1580560
This is a Broadcom limitation and Day 1 issue affecting broadcom chipsets such as EX4650's, QFX5ks, EX4300. One VLAN can be mapped to only on ERPS ring. For example, VLAN 100 can be mapped to only one ERPS ring. This same VLAN 100 cannot be part of another ERPS ring on the same switch. PR1732885
[interface] [all] EX4400-48F :: JUNOS_REG: EX4400 : input-vlan-tagged-frames are not in the expected range while verifying Vlan Tagged Frames. PR1749391
Infrastructure
When upgrading from releases before Junos OS Release 21.2 to Release 21.2 and onward, validation and upgrade might fail. The upgrade requires using the 'no-validate' option to complete successfully. https://kb.juniper.net/TSB18251. PR1568757
