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Resolved Issues: 21.2R2

Class of Service (CoS)

  • The TCP-ECN traffic might not be forwarded with high priority. PR1585854


  • Configuring the static-mac and no-mac-learning simultaneously on the VXLAN interface causes stale MAC and IP entry in the EVPN database. PR1576147

  • Traffic loss might be seen under an EVPN-VXLAN scenario when MAC-IP moves from one CE interface to another. PR1591264

  • The device announces router-mac, target, and EVPN-VXLAN community to BGP IPv4 NLRI. PR1600653

  • Traffic sent by the QFX5000 leaf to remote leaf with link down. PR1605375

  • In an EVPN-VXLAN scenario, a few ARP ND MAC entries for EP style VLANs are missing with MAC-VRF configuration. PR1609322

General Routing

  • Memory usage increases continuously on backup chassis if the subscriber service is enabled. PR1595238

Interfaces and Chassis

  • Removing the configuration from an interface stanza might cause the dcpfe process to crash. PR1594356

Layer 2 Ethernet Services

  • The DHCP client might go offline for about 120 seconds after sending the DHCPINFORM message. PR1587982

Platform and Infrastructure

  • The interface might not come up with 1 Gigabit optics. PR1554098

  • The interface might go into blocking state impacting the traffic when the link-protection switches from primary to backup. PR1555294

  • On QFX5100 platforms, the Virtual Chassis Port (VCP) might not come up after upgrading. PR1555741

  • Upon receipt of specific sequences of genuine packets destined to the device, the kernel crashes and restarts. PR1557881

  • On QFX5110 line of switches, the untagged traffic routed over the native-vlan might be dropped. PR1560038

  • The dcpfe process might crash after committing EVPN-VXLAN profile configuration and ARP resolution might fail causing traffic issues. PR1561588

  • The na-grpcd process might generate core files during longevity tests. PR1565255

  • On QFX10000 Series platforms, DCPFE/FPC might crash if the ARP MAC move happens. PR1572876

  • On QFX10K2-60C switches, disk missing alarms are not seen. PR1573139

  • On QFX Series switches, upgrading to Junos OS Release 20.3 or later might report a warning: requires 'l3vpn' license message on commit when a VRF instance configuration exists. PR1575608

  • The port might not bring down immediately during some abnormal type of line card reboot on the QFX10000 platforms. PR1577315

  • On QFX5100 switches, some 40G ports might not be channelized successfully. PR1582105

  • On QFX5000 platforms, firewall filter is not getting programmed after deleting a large filter and adding a new one in a single commit. PR1583440

  • The QFX5000 and QFX10000 line of switches might hang for sometime after rebooting. PR1584902

  • The zero touch provisioning (ZTP) process might silently drop or discard the traffic. PR1585057

  • The na-grpc process crash might be seen and existing telemetry connections will be disconnected. PR1587956

  • In an EVPN-VXLAN scenario, 50 percent traffic loss might be observed. PR1589547

  • On QFX5210-64C switches, PSU firmware upgrades through Junos OS. PR1589572

  • The MPLS traffic might not be forwarded after the aggregate interface flap on the QFX5120 switches. PR1589840

  • VXLAN DDoS violation might occur when disabling the port mirror analyzer output interface. PR1590150

  • Virtual Chassis mastership is changed and connection is dropped after renumbering the backup member ID. PR1590358

  • On the QFX5120-48T switches, after removing 1G speed on interfaces, it does not come back as 10G. PR1591038

  • The xSTP might not get configured when enabled on an interface with SP style configuration. PR1592264

  • Routing Engine kernel might crash due to logical interface of aggregated interface adding failure in Junos kernel. PR1592456

  • The IPv4 fragmented packets might be broken if the PTP transparent clock is configured. PR1592463

  • On QFX10002, QFX10008, QFX10016 switches, MPLS traffic might get discarded on passive monitoring interface. PR1592693

  • Multiple crashes with toe_interrupt_errors might be observed. PR1593025

  • BFD session might flap during Routing Engine switchover. PR1593244

  • The dcpfe process might crash in an EVPN-VXLAN scenario. PR1593950

  • Packet drop might occur in ECMP next hop flap scenario. PR1594030

  • ARP entry might be found missing intermittently post FPC reboot. PR1594255

  • The existing ECMP route traffic might be dropped if configuring a static ECMP route with the same number of next hops as the existing ECMP route. PR1594573

  • The label field for the EVPN Type 1 route is set to 1. PR1594981

  • The re-installation of the Type-5 tunnels might fail in an EVPN-VXLAN scenario. PR1595197

  • The DCI InterVNI and IntraVNI traffic might get silently dropped and discarded in a gateway node due to the tagged underlay interfaces. PR1596462

  • The mcscnoopd process might crash during deleting or adding Layer 2 forwarding configuration after performing a unified ISSU. PR1596483

  • The fpc0 bcm pkt reinsert failed logs were written in the log messages in an aggressive way. PR1596643

  • Traffic might be dropped after backup FPC is rebooted in a Virtual Chassis scenario. PR1596773

  • The interface might not be brought up when Q-in-Q is configured. PR1597261

  • Deletion of the MACsec configuration on a logical interface does not take effect. PR1597848

  • Socket connection drops due to keepalive timer expiration with port 33015. PR1598019

  • On QFX5000 line of switches, sFlow sample rate setting causes IRB to not respond to ICMP traffic. PR1598239

  • On QFX5100, QFX5110, QFX5120, QFX5200, and QFX5210 platforms, DDoS violations might be reported incorrectly for IP multicast miss traffic (IPMCAST-MISS).PR1598678

  • File permissions are changed for /var/db/scripts files after reboot. PR1599365

  • On QFX10002-60C switches with IRB interface, the Layer 3 traffic might be dropped or discarded silently. PR1599692

  • Unable to disable the management port em1. PR1600905

  • On QFX5120-48Y switches, dc-pfe core files are generated while issuing the show pfe vxlan nh-usage in an ERB EMC scenario with 6000 ARP entries. PR1601949

  • The IPv6 traffic might be impacted when an IPv6 route resolves over a dynamic tunnel. PR1602007

  • The egress interface of the GRE tunnel is not updated dynamically when the destination to the tunnel changes. PR1602391

  • The FPC goes down and dcpfe core files are generated in some cases. PR1602583

  • Traffic loss might be seen in a MC-LAG scenario on QFX platforms. PR1602811

  • Traffic drop might be observed on the QFX5000 line of platforms in a Virtual Chassis scenario where the firewall filter is configured. PR1602914

  • On an EVPN-VXLAN enabled endpoint, dot1x authentication might not work. PR1603015

  • On QFX5120S switches, traffic gets mirrored even after deactivating analyzer configuration. PR1603192

  • Packet loss might be seen on the filter-based GRE deployments. PR1603453

  • Duplicate packets might be seen when you bring up all the interfaces on the spine switches. PR1604393

  • On QFX5210-64C switches, the carrier transition counter does not increment on link flap after rebooting. PR1605037

  • MAC move might be seen between the ICL and MC-LAG interface if you add or remove VLANs on the ICL interface. PR1605234

  • Multicast streams might stop flooding in a VXLAN setup. PR1606256

  • Virtual Chassis ports might remain in down state after removing and adding. PR1606705

  • The LLDP packets received on a VXLAN enabled port might be flooded unexpectedly. PR1607249

  • On QFX Series switches, the fxpc process might crash and generates a core file. PR1607372

  • Ping to loopback and IRB interfaces over Type 5 fails. PR1610093

  • Continuous Layer 3 traffic drop is observed with MC-LAG configuration on QFX Series platforms. PR1610173

  • Agile licensing might vanish after Virtual Chassis mastership switchover or reboot. PR1610272

  • MAC move or MAC flap might be triggered on the QFX5000 Virtual Chassis environment. PR1610295

  • On QFX10002-60C and PTX10002-60C switches, FPC crashes continuously and generates dcpfe core file. PR1612871

  • On QFX5000 line of switches, the VLAN firewall filter is not deleted in the Packet Forwarding Engine after configuration change. PR1614767

  • The l2ald process crashes and generates core files in an EVPN scenario. PR1615269

  • The BFD session might get stuck in the init state after Layer 2 learning restarts due to incomplete ARP resolutions. PR1618280

Routing Protocols

  • The remaining BFD sessions of the aggregated Ethernet interface flap continuously if one of the BFD sessions is deleted. PR1516556

  • Traffic loss might be seen when the IPv6 traffic forwarded by the IPv4 GRE tunnel. PR1582408

  • The BGP egress TE routes lose to BGP routes using the same protocol preference. PR1593332

  • IPv4 static route might still forward traffic unexpectedly even when the static route configuration is deleted. PR1599084

User Interface and Configuration

  • The system archival might not work inside a routing instance. PR1572228