Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?


Known Limitations

Learn about known limitations in this release for vJunosEvolved.

For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.

The vJunosEvolved has the following limitations:

  • The vJunosEvolved has a fixed-form Junos OS Evolved architecture.

  • You cannot upgrade vJunosEvolved on a running system. Instead, you can deploy a new instance with the new software.

    The vJunosEvolved does not support in-service software upgrade (ISSU).

    You cannot attach or detach interfaces while vJunosEvolved is running. .

  • To channelize WAN interfaces, run a boot argument with channelized=yes that is specified in the VM config and the interfaces speed config at vJunosEvolved CLI.

    Example: set interfaces et-0/0/0 speed 25g number-of-sub-ports 8

  • For non-channelization, channelized=no is the default config.

  • vJunosEvolved does not support single-root I/O virtualization (SR-IOV)

  • COSIM reliably works up to 2000 pps across 128B-1500B packet length. You do not need a bandwidth license.

  • For vJunosEvolved to function correctly as a Virtual Extensible LAN (VXLAN) Tunnel End Point (VTEP), you must configure tunnel termination using the set forwarding-options tunnel-termination command. Otherwise the traffic in the tunnel drops on the egress VTEP.

The following features are not supported on vJunosEvolved:

  • Port mirroring

  • Storm control

  • Multichassis link aggregation (MC-LAG)

  • VXLAN seamless stitching for Data Center Interconnect (DCI)

  • Virtual Router Redundancy Protocol (VRRP)

  • Multicast

  • Q-in-Q tunneling through an Ethernet VPN–Virtual Extensible LAN (EVPN-VXLAN) fabric

  • Layer-2 egress filtering on EVPN-VXLAN-enabled integrated routing and bridging (IRB) interfaces

  • IPv6 underlay and overlay

  • MAC filtering in EVPN-VXLAN fabric using a MAC list

  • EVPN-VXLAN fabric enhanced loop detection using connectivity fault management (CFM)