VLAN iSCSI problems

Dear Forumers,

Kindly for your help. I have network based on tp-link 1043nd, with OpenWRT. I have setup multiple VLAN's (VLAN 10 - management , VLAN 20 for VM's,...etc) . On my "personal" PC, I have vmware workstation with TrueNAS as iSCSI target. I installed realtek diagnostic utility, to setup VLAN's to my "PC"
TrueNAS and esx, are "visible" to each other, I can access ESXi from my PC, via HTTP, so the VLAN is working. The problem occurs once I configure software iSCSI from ESX, the network gets completely jammed, ESX becomes irresponsible, and Router reboots. Any suggestions?

Help appreciated.