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vSRX interfaces did not go down when assigned to SR-IOV virtual functions



Article ID: KB31894 KB Last Updated: 29 Jun 2017Version: 1.0

This article discusses the behavior of vSRX interfaces when assigned to single-root I/O virtualization (SR- IOV) virtual functions (VF).


 SR-IOV VF can be assigned to vSRX. The vSRX interfaces that use SR-IOV VF did not go down when SR-IOV physical functions (PF) or host NIC went down.


This is due to the data plane development kit (DPDK) used on vSRX.

DPDK have link level status detecting API, and this API is not implemented for SR-IOV PF.  When the physical interface is up, DPDK API cannot detect it is up. This is the same when the physical interface is down; DPDK API cannot detect it is down.

Hence, when SR-IOV VF is used, the corresponding vSRX VM GE-*/*/* is designed to always be UP.


This behavior is by design for vSRX.

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