Problem with ping with switch mgmt port

Hello,

I have a communication problem with hosts that are connected to my Z9100-ON switches that are connected via VLT.

My topology:

Brocade FastIron FCX648 (stack) <---> Powerconnect 8024F (stack) <---> DELL Z9100-ON (two switches with VLT connection).

To the Brocade FastIron FCX648 I have conected generally managament to servers (IPMI, iDRAC, etc and connected management to the Z9100-ON switches.

I use Powerconnect 8024F and DELL Z9100-ON to operate services and servers.

Trunk connections, vlans work, but I noticed one thing that I do not fully understand, which is why I am writing this post.

Well, hosts connected to Powerconnect 8024F ping both managament port of DELL Z9100-ON switches, but hosts connected to DELL-Z9100-ON ping only one switch, not the other one. Hosts that cannot see this one switch, interestingly, have it in the ARP table. Besides, other hosts in this management VLAN respond to the ping.

The other way around is the same, this switch whose management port connected to the Brocade FastIron FCX648 does not ping the hosts that are connected to these DELL Z9100-ON switches connected to each other via VLT, but to the hosts connected to the Powerconnect 8024F ping responds.

I found a thread with a ping problem, but in my case the "show vlt mismatch" command is not showing.
https://www.dell.com/community/Networking-General/Pair-of-S4810-cannot-ping-other-switch-through-VLT-link/td-p/4653568

I will be grateful for any suggestions. If you need any more information, please let us know.

 

Your faithfully,
Marek.