Regarding ARP and DHCP conflict detection.
Until recently, I was using DHCP combined with the IP-MAC Bidding/ARP inspection feature. However, when I detected a conflict that didn't exist before, I found out that the ER605 V2 is not capable of working simultaneously with DHCP and IP-MAC Bidding.
I always worked with it this way, detecting these conflicts and packet drops, but it never affected my access.
Since today I noticed many warnings coming from a smartphone, I became suspicious, but in the end I discovered that it's a feature of smartphones that constantly changes the MAC address, causing the conflict problem. But I'm curious, what I did isn't wrong. However, the ER605 V2 doesn't seem to have the capacity to support dual identity authority.
I wanted to confirm this and what products could replace it.
"This MAC address conflicts with an existing DHCP Reservation entry." <--
This is the topology.
I also want to point out that what's marked in red should be the TL-SG105PE 2.0.
But, back to the problem.
When I try to add an IP and MAC address that is already registered in DHCP, I receive the following message: "This MAC address conflicts with an existing DHCP Reservation entry."
Should this really happen? I had never noticed this message before the latest updates. And, after researching, what I want to do isn't wrong, as long as the product is prepared for this condition, and the ER605V2 doesn't seem to be.
That's why I'm here to understand, because it's a protection feature I want to use. It has never caused me any problems, except for the issue I had with a smartphone, but the reasons were clear for the device that constantly changes its MAC address. However, it caught my attention to review the other entries I had configured when I detected the conflict information with reserved MAC addresses.
I need more information about this and which devices are actually prepared for "duplicate authority over IP-MAC identity".
They mention that the best approach would be to configure IP-MAC-Port Binding on the SG2008 port. However, I haven't found where to do this, besides the option suggested in the ER605V2. Shouldn't there be a way to choose the device on which you want to implement this feature?
