Catalyst 3750 DHCP Snooping and Dynamic ARP issue

[edselk]

Hi,

I have a catalyst 3750 switch on my network. I connected an NVR device to its port 2 on VLAN2. I set DHCP snooping and Dynamic ARP inspection settings as below;

DHCP Snooping and Dynamic ARP inspection is TRUST on DHCP server side at port4(both working on VLAN2)

ARP inspection is UNTRUST and limit is none on NVR device at port2.

NVR is removed from the DHCP snooping table after DHCP lease time ends. And it shows arp packet denials on the log.

Why do you think this happens and how can I solve this?

[MHM Cisco World]

How dhcp snooping remove entry when lease time end and device not ask for IP?

It issue here' check lease time in device is it match dhcp snooping lease time ?

MHM

[paul driver]

Hello
Not sure i understand if the dhcp snooping table was cleared of that NVR host, then the source binding table of DAI should have cleared also?
Do you still still entry in the source binding table inrelation to that NVR host?