I have Configured DHCP snooping and IP source guard and Dynamic arp inspection on my 3560 and 3750 Network Switches,
on both of them I'm facing that issue. (the printers and access points are configured to get ip addresses via DHCP), but when the lease time expires, they don't get ip addresses, and become unreacheable.
while all other clients get thier ip addresses normally
below you can find the Configuration configuration
ip dhcp snooping vlan 98,105,111
no ip dhcp snooping information option
ip dhcp snooping database flash:dhcpsnooping
ip dhcp snooping database write-delay 15
ip dhcp snooping
ip arp inspection vlan 98,105,111
ip verify trust on all access ports including printers and access point ports
all access ports are DHCP snooping untrusted
also when I create a static dhcp snooping binding record for these devices on the switch it resolves the Issue, but when I reload the switch it's removed automatically.
any resolution will be much appreciated.
check the following link for configuration of DHCP snooping
I've the trusted port configured, all the clients get ip address and work normally, except for printers and Access point.
I tried to configure static binding, so they work. they doesn't work without static binding. and they are configure to get ip addresses from the DHCP also.
is that a bug or something else?