Missing fields when querying statistic for Edge Node kni-fp-eth0 interface

Products

• VMware NSX

Issue/Introduction

Symptoms:

• NSX-T 2.4.x is used.
• API to query statistics of an Edge Node kni-fp-eth0 do not return all expected fields, for example:

Expected:
GET /api/v1/fabric/nodes/e06e89ba-6c15-11e9-97bb-00505688d88c/network/interfaces/kni- fp-eth1/stats
{
  "interface_id" : "kni-fp-eth1",
  "rx_bytes" : 0,
  "rx_dropped" : 0,
  "rx_errors" : 0,
  "rx_frame" : 0,
  "rx_packets" : 0,
  "tx_bytes" : 0,
  "tx_carrier" : 0,
  "tx_colls" : 0,
  "tx_dropped" : 0,
  "tx_errors" : 0,
  "tx_packets" : 0,
  "source" : "cached"
}

Returned:
GET /api/v1/fabric/nodes/e06e89ba-6c15-11e9-97bb-00505688d88c/network/interfaces/kni-fp-eth0/stats
{
  "interface_id" : "kni-fp-eth0",
  "rx_bytes" : 0,
  "rx_errors" : 0,
  "rx_packets" : 0,
  "tx_bytes" : 0,
  "tx_errors" : 0,
  "tx_packets" : 0,
  "source" : "cached"
}

Environment

VMware NSX-T
VMware NSX-T Data Center

Cause

On Edge Nodes, kni-fp-ethX interfaces are Linux interface while fp-ethX interfaces are dpdk interface.
Due a bug, kni-fp-eth0 is treated as a dpdk interface and only the dpdk interface statistics are returned.

Resolution

Currently there is not resolution