DHCP Option 82 Explained – Why Your Clients Stop Getting IPs After Enabling DHCP Snooping

DHCP Option 82 Explained – Why Your Clients Stop Getting IPs After Enabling DHCP Snooping
One of the most common hidden issues in Cisco networks!
When DHCP Snooping is enabled, switches automatically insert Option 82 (Relay Agent Information). If multiple switches do this — or if the DHCP server doesn’t support it — DHCP requests get dropped.
Best Practice in Multi-Tier Networks:

Enable Option 82 only on the nearest L3 switch to the DHCP server
Disable it on all Access/Downstream switches

no ip dhcp snooping information option
Save this infographic 👇 It will save you hours of troubleshooting!

Cisco #Networking #DHCPSnooping #CCNA #CCNP