Monday, October 15, 2018

Cisco IE-2000 with MRP and PVST+

Hi, i've in a plant 4 IE-2000 switches where I need to connect a Siemens Simatic 400 H redundant system with remote I/O using Profinet.

Siemens stated that I need to use MRP for ring redundancy.

I've configured MRP with a switch as MRP Manager and the others as client.

The problem is that MRP ask for two ports on every switch but i need to connect Simatic CPU to two different switches: the cpus act in a strange mode because from every cpu i can contact MAC addresses of the two CPU so PVST+ and MRP try to fight for the control of the ports.

Searching over internet I only found a problem similar to mine here https://community.cisco.com/t5/switching/cisco-mrp-and-spanning-tree/td-p/2824667 with no solution!



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