?
Solved

Cisco Aironet 1250 clients have out of scope IP

Posted on 2013-01-17
3
Medium Priority
?
509 Views
Last Modified: 2013-01-17
I have a few 1250 AP's around the office all of which have been behaving normally for some time until this morning when clients connecting to one of the AP's have started to receive IP addresses outside our dhcp scope.

Current lease scope is 10.1.5.1-254  -  10.1.6.1-254

However, clients connecting to this single AP are being given 10.0.0.0 addresses.

I've checked our DHCP server and see nothing out of the ordinary, but restarted service just in case. I've also checked the AP to make sure it somehow hadn't started thinking it is a DHCP server and it's fine as well. Nothing in the logs to indicate a problem. Other APs in the office are acting as expected.
0
Comment
Question by:MrBlister
  • 3
3 Comments
 

Author Comment

by:MrBlister
ID: 38788638
It's actually happening on all of the AP's now. Devices that are identified as ccx-client seem to be picking up addresses normally but devices that are type unknown are being given the out of scope range.
0
 

Author Comment

by:MrBlister
ID: 38788807
It looks as if only non Microsoft (windows and windows phone) devices are being given the out of scope ip addresses. All macs, iphones/pads and android devices are coming up empty.
0
 

Accepted Solution

by:
MrBlister earned 0 total points
ID: 38789317
Rogue DHCP server on the network.
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, WatchGuard's Director of Security Strategy and Research Teri Radichel, takes a look at insider threats, the risk they can pose to your organization, and the best ways to defend against them.
This article will show you step-by-step instructions to build your own NTP CentOS server.  The network diagram shows the best practice to setup the NTP server farm for redundancy.  This article also serves as your NTP server documentation.
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…
Suggested Courses
Course of the Month8 days, 5 hours left to enroll

616 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question