Open Issues

On QFX5000 switches, the end hosts might not communicate via EVPN-VXLAN domain after Ethernet Segment Identifier (ESI) failover. PR1584595

Modifying the I-ESI value affects the traffic events. If you are changing the I-ESI value, then do the following actions:

1) Deactivate the interconnect stanza for the routing-instance in question.

2) Modify the I-ESI value and then, activate the interconnect stanza. PR1600600

MAC-IP move across the L2-DCI is not updated in the MAC-IP table of the GW nodes for VLANs that have translate VNI configuration. This problem occurs only with translation VNI when MAC moved one from DC1 to DC2. Virtual machine move across DC where there is no translate VNI configuration in the interconnect works as designed. PR1610432

EVPN local ESI MAC limit configuration might not get effective immediately when it has already learned remote MH MACs. Clear the MAC table from all MH PE devices and configure the MAC limit over local ESI interfaces. PR1619299

Temperature sensor 2 output for opus SD106 is not showing. PR1582981

If the request system zeroize command does not trigger zero-touch provisioning (ZTP). As a workaround, reinitiate the ZTP. PR1529246

The RSVP interface update threshold configuration syntax has changed between Junos OS Release 18.2X75-D435 and Junos OS Release 20.3X75-D10 to include curly braces around the threshold value. Upgrading and downgrading between these releases is not entirely automatic. The user must delete this stanza if configured before the downgrade, then need to configure manually. PR1554744

The rpd process generates a core file at rt_iflnh_set_nhid . The core file is due to assertion caused by failure of hbt_insert for nhid belonging to a logical interface. There is a duplicate entry present which causes the hbt_insert failure. PR1588128

The commit synchronize command fails when the kernel socket gets stuck. PR1027898

On a PTX Series router with a third-generation FPC, an error message is displayed when the FPC goes online or offline. PR1322491

On QFX10000 platforms, source MAC and TTL values are not updated for routed multicast packets in an EVPN-VXLAN. PR1346894

When a VLAN is added as an action for changing the VLAN in both ingress and egress filters, the filter is not installed. PR1362609

Arrival rates are not seen at system level when the global-disable fpc is configured on the QFX Series platforms. PR1438367

The unified ISSU is not supported on QFX5200 switches and fails. Also, dcpfe crash might be seen. PR1438690

A timing issue during the sxe interface bring up (with respect to i40e driver) is seen. To recover, reboot the complete board. PR1442249

The rpd process might crash if the BGP route gets resolved over the same prefix protocol next-hop in the inet.3 table that has both the RSVP and LDP routes. PR1458595

The storm control does not rate limit ARP packets on QFX10000 switches although shutdown action works. PR1461958

On QFX5110 switches with VXLAN VNI (multicast learning) scaling, traffic issue is seen from VXLAN tunnel to Layer 2 interface. PR1462548

On QFX5000 Series platforms with the instance-import configuration, unexpected route next hop occurs if you delete route with next-table. PR1477603

When the show pfe filter hw filter-name filter name command is executed, the command fails to retrieve the Packet Forwarding Engine programming details of the filter.PR1495712

On a fully scaled system where all the slices are utilized by different families of CLI filters, if you try to delete one family and add or change for another family with a higher number of filter terms which requires either expansion of the filter or creation of a new filter, the Packet Forwarding Engine fails to add the new filter as you receive out of sequence messages. That is, the add or change of the filter is called earlier than the delete of another filter will free up the slices. PR1512242

MSDP sessions might reset after a GRES reset even when the nonstop routing (NSR) state is synchronized and ready for switchover. PR1526679

When the DHCP relay mode is configured as no-snoop, it is observing that the offer gets dropped due to incorrect ASIC programing. PR1530160

FIPS mode is not supported. PR1530951

On QFX5100 switches that does not run qfx-5e codes, when an image with the third party SDK upgrade (6.5.x) is installed, the CPU utilization might go up by around 5 percent. PR1534234

On QFX5000 Series platforms, under EVPN-VXLAN spine-and-leaf environment, packets sent through VXLAN tunnel might lose Virtual Tunnel End Point (VTEP) IP address (source IP address (SIP)). Packets without SIP might cause memory leak. PR1536895

The Socket to sflowd closed error comes up when the ukern socket to sflowd daemon (server) is closed. The error is rectified by itself as the client successfully reestablishes the connection in the subsequent attempts. When these errors are consistent, it indicates a communication issue between sflowd and the sFlow running on the FPC. PR1538863

On an EVPN-VXLAN scenario, vmcore files are generated on master and backup Routing Engine with Layer 2 or Layer 3 multicast configuration. PR1539259

100G AOC from third party does not comes up after multiple reboots. It recovers after enabling or disabling the interface. PR1548525

Users cannot subscribe to any path that ends with key. PR1553534

5M DAC connected between QFX10002-60C and MX2010 does not link up, but this interoperation works as expected with 1M and 3M DAC. PR1555955

The show system license command output show the following error. However, there is no functional impact.

PR1558017

On QFX5120-48Y switches, amber LEDs are displayed for the fan modules after upgrading to Junos OS Release 20.2R1 and later. The LEDs are on continuously even if there is no fault in the fans. PR1558407

Interface hold time needs to be configured to avoid the additional interface flap. PR1562857

Starting in Junos OS Release 21.1R1, Junos OS will be shipping with python3 (python2 is no longer supported). In ZTP process, if a python script is being downloaded, ensure that the python script follows python3 syntax (there are certain changes between python2 and python3 syntax). Also, so far (that is, until Junos OS Release 20.4R1), the python script had #!/usr/bin/python as the first line (that is, the path of the python interpreter). The same needs to be changed to #!/usr/bin/python3 from Junos OS Release 21.1R1. PR1565069

The chassisd logs flood with the pic_create_ifname: 0/0/0 pic type F050 not supported messages for every connected port. The flooding might happen every few seconds. PR1566440

On all L2NG platforms, MAC address entries might be smaller in the MAC table than in the ARP table, this is because some of the MAC addresses are not relearned successfully after MAC address age timeout. This issue will cause traffic loss for non-existing MAC entries. PR1567723

BUM traffic replication over VTEP sends out more packets than expected. PR1570689

On QFX10002-60C platforms, known multicast traffic received over a VLAN from the core on VTEP does not get forwarded to the downstream CE interfaces. PR1575841

In an EVPN-VXLAN scenario with OSPF configured over the IRB, OSPF sessions might not get established due to connectivity issues. PR1577183

On QFX5100 switches, while checking DHCP smart relay over IRB interfaces, the renew-ack might not be seen in the DHCP client. PR1581025

When soft loopback port and analyzer configurations are committed together, hardware might not get programmed with the analyzer. This issue is not seen when physical loopback is used to achieve the same. PR1581542

In a fully loaded device, firewall programming fails at times due to scaled prefix configuration with more than 64800 entries. However, this issue is not observed in development setup. PR1581767

When physical loopback is used and both the ports are with EP style in the same RSPAN VLAN, it might lead to flooding. PR1581876

The input ingress and input egress together for the same port will not work in mirroring with VXLAN encapsulation. PR1589854

On the QFX10000 Series platforms, the dcpfe process or FPC crash might be observed in boot time. PR1597479

Read write lock is not acquired during the sysctl invocation. The assert triggered in the interface state function call leads to Routing Engine 1 going to debug (db>) prompt. PR1598814

On QFX5200 switches, dcpfe process generates core files during unified ISSU. PR1600807

There is a remote possibility that during many reboots, the Junos OS VM goes into a state where NMI is needed to continue the reboot. There is no workaround for this and a subsequent reboot does not seem to hit this issue. PR1601867

In some instances, when the device reboots, the Junos Virtual machine might hang until NMI is triggered and rebooting is completed. PR1602360

On QFX5120 switches, traffic loss might be seen when primary link is disabled with aggregated Ethernet link protection configuration. PR1604350

The dfwd process generates core file when accessing ephemeral database files which is deleted through script. PR1609201

On QFX10002-60C switches under MAC statistics, output-mac-control-frames and output-mac-pause-frames do not increment. PR1610745

On QFX10002, QFX10008, and QFX10016 platforms, the following error message is appeared on scaling more than 80,000 ARP/NDP: prds_jpf_nh_token_change: Token change failed for rnh. PR1616224

In a Virtual Chassis or Virtual Chassis fabric scenario, inconsistent MCSNOOPD core file is seen when igmp-snooping configuration is removed. PR1569436

On QFX10002 switches, the multi-hop BFD session might flap if collecting RSI or some other outputs (such as show interface or configuration). It is caused by the missing BFD packets, because the PPMAN thread is not scheduled within the BFD timers which are 300 milliseconds with a multiplier of 3. PR1589765

Upon clearing or deleting a peer, peer cleanup process gets stuck and peer stays in an idle (close in progress) state forever. PR1618103

On certain conditions where underlay session is flapped due to interface down event, it might see a flap in the overlay BFD session due to delay in route install to reach the packet to the neighbor. PR1618118