- Introduction
- play_arrow Junos OS Release Notes for ACX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- 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 What's New
- play_arrow What's New in 21.4R3
- What's New in 21.4R2
- play_arrow What's New in 21.4R1
- Hardware
- Architecture
- Chassis
- EVPN
- High Availability
- IP Tunneling
- Junos Telemetry Interface (JTI)
- Layer 2 VPN
- Interfaces
- MPLS
- Multicast
- Network Address Translation (NAT)
- Operation, Administration, and Maintenance (OAM)
- Platform and Infrastructure
- Routing Protocols
- Source Packet Routing in Networking (SPRING) or Segment Routing
- Services Applications
- Software Defined Networking (SDN)
- Software Installation and Upgrade
- Subscriber Management and Services
- VPNs
- Additional Features
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for NFX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for PTX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for QFX Series
- play_arrow What's New
- What's New in 21.4R3
- play_arrow What's New in 21.4R2
- play_arrow What's New in 21.4R1
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for SRX Series
- play_arrow Junos OS Release Notes for SRX Series
- play_arrow What's New
- play_arrow What's New in 21.4R1
- Application Identification (AppID)
- Authentication and Access Control
- Chassis
- Chassis Cluster-specific
- Flow-Based and Packet-Based Processing
- Hardware
- J-Web
- Network Address Translation (NAT)
- Platform and Infrastructure
- Software Installation and Upgrade
- Unified Threat Management (UTM)
- Additional Features
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for vMX
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Upgrade Instructions
- play_arrow Junos OS Release Notes for vRR
- play_arrow Junos OS Release Notes for vSRX
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- Licensing
- Finding More Information
- Requesting Technical Support
- Revision History
Resolved Issues: 21.4R3
General Routing
The EX2300 might unexpectedly drop VOIP VLAN traffic after reboot. PR1633883
IPv6 route advertisement sent on management interfaces might cause other devices to fail to get the dhcpv6 address. PR1635867
DHCP snooping table might fail on All Junos platforms to populate MAC address after a VLAN change. PR1637380
Interface running MACsec might flap in EX4600. PR1642001
Junos OS: RIB and Packet Forwarding Engines can get out of sync due to a memory leak caused by interface flaps or route churn (CVE-2022-22209). PR1642172
Traffic loop might occur due to STP ports not created in new primary Routing Engine after switchover due to reboot of primary Routing Engine on EX4300, EX3400, and EX2300 platforms in Virtual Chassis (VC) scenario. PR1647000
DHCP traffic might be dropped when DHCP-security and RTG are enabled. PR1647209
The VC port might not be formed automatically after Zeroize. PR1649338
L2PT configuration on a transit switch in a Q-in-Q environment breaks L2PT. PR1650416
The VCP link might take longer time to come up during system reboot or Packet Forwarding Engine restart. PR1651316
EX9251 :: Reboot reason shows as 0x2000:hypervisor reboot instead of 0x4000:VJUNOS reboot when we do Junos reboot. PR1651721
The inner tag (C-tag) value might get modified to zero for egress traffic when the inner tag values are copied to the outer tag (S-tag). PR1652976
L2PT may not work for aggregate Ethernet interfaces in Q-in-Q environment. PR1653260
Port mirroring traffic not being flooded on the expected interfaces. PR1654812
The egress traffic is not tagged properly in a L2PT scenario. PR1655511
Few EX platforms does not generate ICMPv6 too big messages. PR1655654
All Slaac-snooping entries learnt on an IFL deleted when an IFBD is deleted such that IFL is member of more than 1 VLANs. PR1655913
Filter-Based Forwarding filter might not work as expected. PR1656117
The interface might not come up on EX platforms. PR1656540
An incorrect PEM alarm will be raised on EX4400 devices. PR1658049
The port/mac gbp tags may not be carried forward to the spine. PR1659384
VC in unstable state for 3-7 minutes causing traffic loss. PR1661349
LEDs on ports 0-35 are always lit on EX4400-48MP platforms. PR1662288
The fxpc crash might be observed with the RPF check enabled. PR1662508
In the EVPN-VXLAN scenario, the DHCP packets will get dropped when the DHCP relay agent is configured. PR1662524
SSH traffic might be affected when filter log action is used. PR1663126
MAC address learning failure and traffic loss might be observed on VXLAN enabled ports having native-VLAN configured. PR1663172
MAC addresses learned on the RTG interface are not aging out. PR1664955
EX4300-48MP: VC: NSSU aborted with Backup Routing Engine maybe in inconsistent state. PR1665562
MAC-IP bindings for IPv4 (ARP) and IPv6 (ND) may not be processed for IRB interfaces in an EVPN scenario. PR1665828
High numbers of PDs connected might result in high CPU utilization. PR1667564
Shaping-rate is not taking 20bytes of overhead into account. PR1667879
VLAN translation programming gets deleted from Packet Forwarding Engine upon deleting the a member interface for LAG. PR1676772
Junos Fusion Enterprise
There might be memory leak observed in Junos Fusion satellite device for cpd process. PR1577977
Layer 2 Ethernet Services
DHCP packets might not be sent to the clients when 'forward-only' is reconfigured under the routing instance. PR1651768
Platform and Infrastructure
Traffic is dropped after chassis-control restart when filter is attached and source and destination configuration statement is enabled. PR1615548
GARP reply does not update ARP entry though gratuitous-arp-reply option is configured. PR1644616
IRACL filters more than 64 might not work on IRB units. PR1653216
The dc-pfe might crash due to the VCCP flap. PR1655530
Junos upgrade may fail due to a storage issue in the /var/tmp directory. PR1659460
On EX4300 platform, High CPU is seen with generation of log message /kernel: %KERN-3: i802_3_slow_recv_input:oam/esmc PDU dropped. PR1661332
Commit fails on EX4300 as EX4600 and EX4300 mixed virtual-chassis is not able to create more than 1024 IFLs. PR1671304