i dont know what is the problem but im sure ive got the switch properly configured for dhcp snooping. trusted port only on the ones facing the dhcp server but the discover message is dropped by the MAIN SWITCH. attached is the packet tracer file. ITS vlan 10 on main switch. my dhcp server is configured on the router. router password is burnik. layer 3 switch password is cisco.
Solved! Go to Solution.
A couple of points:
- Dont apply dhcp snooping on any L3 switch it only applicable for access switches
- if dhcp server is on L3 switch or doesn’t reside locally then trust all trunk interconnects and uplinks to L3switch so DORA’s can traverse successfully