Open Issues

runt, fragment and jabber counters are not incrementing on EX4300-MPs. PR1492605

When launching a guest virtual machine to run a third party application on Junos OS Release 15.1R1 and later, the guest VM show as "UNAVAILABLE" even after successfully installing the third party application. This is due to duplicated device ID assigned to different disks. PR1529596

On EX2300, EX3400, EX4300-48MP, and EX4300, pause frame counters does not get incremented when pause frames are sent. PR1580560

On the EX4600 device with SFP-LX10/SFP-SX, after a power cycle or software reboot, all ports are initialized and links are up with auto-negotiation enabled. Few ports are up and traffic flow whereas a few ports are up but no traffic flows through them.PR1672583

On enabling MVRP on an MSTP enabled interface, the interface will be made part of all the existing instances on the switch. PR1686596

Factory reset and mode button on the far right side of the front panel is used to toggle the status LED to show the different port parameters for the network ports. You can tell which port parameter is indicated by the status LED by looking at which port status mode LED (SPD, DX, EN, and PoE) is lit. Factory reset/mode button will be unable to toggle status mode LED (SPD, DX, EN, and PoE). PR1687407

When a sfp is unplugged or plugged in, it might not be recognized.PR1696444

On all Junos OS and Junos OS Evolved platforms supporting MACsec, traffic drop can be seen when MACsec primary and fallback sessions are configured and there is a higher transmit-delay time of approximately 6 seconds. This is a timing issue and occurs when switching from primary to fallback or vice-versa when changing the pre-shared-key's connectivity association key (CAK) value in the CLI on the non-key-server side and at the same time key-server generates a new Secure Association Key (SAK) for pre-shared-key due to expiration of sak-rekey timer, that is, sak-rekey and primary to fallback key-switch both occurs at the same time. This issue is self-recovered once the SAK from fallback is recovered. PR1698687

On 1G speed ethernet, auto-negotiation is responsible for exchaning Remote-fault and additional capability options (Pause etc) between link partners. So any link failure (Rx LOS) will not be reported to the peer link via Remote-fault if it configures without auto-negotiation / speed 1g. In such situation, the link on local side goes down, but the link on far end keeps Up, which will cause traffic blackhole. Configuring auto-negotiation explicitly under gigether-options is recommended to avoid traffic blackhole.PR1705461

In a Virtual Chassis scenario, sometimes the alarms raised on the line-card or backup Routing Engine might not show on the master. PR1707798

On EX4300 platform, when you configure the encapsulation ethernet-bridge statement, the interface get programmed as trunk instead of access in VLAN membership. This leads to untagged traffic drop. PR1665785

On EX4300-Virtual Chassis platforms, Packet Forwarding Engine process (pfex) crashes when physical interface card 2 (PIC 2) is detached. This deletes the physical interface before the logical interface get deleted. PR1680225

On Junos OS EX4600 Virtual Chassis, the master Routing Engine reboot and all-members reboot lead to the Packet Forwarding Engine manager hogging logs when SFP-T pluggable is installed in. The Packet Forwarding Engine manager hogging logs has no functionality impact. PR1685067

On EX4600-VC, when request system reboot all members is executed, post-reboot one of the VC member or Flexible PIC Concentrator (FPC) might disconnect and join the VC back due to Packet Forwarding Engine restart. Traffic loss is seen when FPC is disconnected. PR1700133