Articles tagged with dhcp_option

1. Allowing DHCP Option 82 in Cisco DHCP Relay Agents

   Posted on June 18, 2007 in Networking

   If you are using your Cisco Catalyst switches to insert DHCP Option 82 information and you are also using your Cisco routers as DHCP relay-agents (via ip helper-address), you'll notice right away that your Option 82 enabled DHCP requests are not being forwarded by your routers.

   As a security measure …

2. 4 Easy Steps to DHCP Option 82 in Cisco Catalyst Switches

   Posted on June 13, 2007 in Networking

   If you're interested in DHCP Option 82 in your Cisco Catalyst-based network, you'll be happy to know that the configuration can be summed up in 4 easy steps.

   1. Enable IP DHCP Snooping. This is an easy global configuration command: ip dhcp snooping. Although we're only turning this on to get …