Hello,I am trying to configure dual fabric chassis cluster (Active/Passive mode) using SRX4600 devices and connect them via stack of ex4600 switches. Devices should be connected like this:EX4600 = SRX4600 | LAG |EX4600 = SRX4600According to KB and official documents there is no need to configure much on EX switches. Main requirements are:
-jumbo frames - MTU size minimum 9016-IGMP snooping off-vlan tagging disabledSRX devices are configured properly. Stack is working fine when SRX devices are connected directly but once i am connecting them via switches they start working in split brain architecture. I was trying to use only one EX4600 switch but result was the same. I tried many different ways of VLAN configuration for example separating control links and fabric links in different vlans but result was always the same. Oddly enough when I am using Cisco switch with VLANs configured to separate control and fabric links SRX stack works perfectly fine so it has to be something with EX devices. I was also trying to force 1g speed on control links and operate only with one fabric link but it always ends up in split brain mode. Also I did all troubleshooting steps mentioned in KBs but it didn't resolved the issue. Do you have any suggestions what could be causing this issue?Thanks for your answers!