This is the retired Shane Killen personal blog, an IT technical blog about configs and topics related to the Network and Security Engineer working with Cisco, Brocade, Check Point, and Palo Alto and Sonicwall. I hope this blog serves you well. -- May The Lord bless you and keep you. May He shine His face upon you, and bring you peace.
Tuesday, July 30, 2013
Know Where Your DHCP Server Is...
I came across a 'wireless down' situation the other day where the customer said that they could not connect to wireless. So when I showed up, I found that you could actually connect to wireless, it was just that I could not get an IP address from the DHCP server. So, it just so happened that I did not know where the DHCP server was on this network. Since this place was not too big, it happened that all the PCs and Phones had a static IP address. So where was DHCP coming from for the wireless? After some searching, I found that the DHCP server was actually the Cisco ASA, and that the wireless AP was plugged into the core switch, in a different VLAN (with no ip helper address) than the ASA. So, easy enough once I knew the network. I just moved the AP over to the ASA 5505 and all was good. But, I think this is an important piece in that you should always know where the DHCP server is for a network, so that troubleshooting these kinds of problems becomes a lot easier.
Subscribe to: Post Comments (Atom)
Post a Comment
Your comment will be reviewed for approval. Thank you for submitting your comments.