Determining PRP SAN or DAN Device type on IvS

Products

• VMware NSX

Issue/Introduction

Industry vSwitch (IvS) supports Parallel Redundancy Protocol (PRP) that can be used with industrial ethernet called Profinet. There are two types of PRP node, Single Attached Node (SAN) and Dual Attached Node (DAN). DAN has dual connections (LAN A and LAN B) for redundancy, however SAN has only a single connection (LAN A or LAN B).

The question is how to know the device type of the PRP node.

 

Environment

4.2.x

Resolution

In order to get the info, you can follow the steps below:

 - Get the MAC address of the NIC that is connected Profinet network
 - Login to the ESXi Host via SSH
 - Run and find the DvsPortset name for the MAC address

net-stats -l

 - Run and find Switch ID (swID) for the DvsPortset

nsxcli -c get ens switch list

 - Run and find the entry for the MAC address in the node table output

 nsxcli -c get ens prp node <swID>

 - Check Type field that shows DAN or SAN