I implement test stand with 2 CP gateways in my lab with rules Any-Any.
My first firewall (cp-sb) has as default gateway cp-ngfw.
Mutual network for 2 firewalls is in promiscous port group. Also, monitor mode interface is in promiscous port group.
When I run this stand my real switch goes into overdrive and real network starts to lose packets.
Experimentally, it was found that this behavior begins to occur when 2 conditions are met:
1) The workstation 10.0.0.2 is running.
2) Interface with monitor mode is enabled.
Both of these conditions should not affect the network in any way, but this is not the case and I cannot understand why.
I will be happy if someone tells me what it might be related to.