Problem with Guest Access DHCP

Unanswered Question
Mar 10th, 2008
User Badges:

I've got an internal (foreign) controller configured with both our internal SSID, as well as with a guest SSID. The controller is anchored to a DMZ-based guest controller. mping and eping all work, and clients can associate to the guest controller. They cannot, however, get a DHCP address.

DHCP is hosted on the anchor controller. The anchor controller has a management interface, and the WLAN is associated with that management IP. The DHCP scope is within the management interface network.

When a client associates, here's what a debug on the anchor controller shows:

Mon Mar 10 08:42:13 2008: 00:1b:63:07:54:96 DHCP received a REQUEST from Gateway -- bouncing to local DHCP server.

Mon Mar 10 08:42:13 2008: 00:1b:63:07:54:96 DHCP sending to local dhcp server ( ->, len 300)

Mon Mar 10 08:42:13 2008: dhcpd: Received 300 byte dhcp packet from 0xac13e504

Mon Mar 10 08:42:13 2008: Dropping packet from (unable to match to a dhcp scope)

Note that is the management interface of the inside controller, and is the address of the management IP of the anchor controller. Any ideas?

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
sabhasin Mon, 03/10/2008 - 21:12
User Badges:

Could you provide the output of:

1. show dhcp detailed '

2. show interface detailed - of the vlan interface to which the guest SSID is mapped to

3. show wlan

josh.heller Tue, 03/11/2008 - 07:42
User Badges:

Hi - turns out that its a bug in the 5.0 software, confirmed by a consulting SE. We've found a workaround, just waiting for new code. Workaround was to put all the controllers in the same mobility group, and just make sure the APs can't contact the 'anchor' controller for registration. Not ideal, but it works.


This Discussion



Trending Topics: Other Wireless Mobility

client could not be authenticated
Network Analysis Module (NAM) Products
Cisco 6500 nam
reason 440 driver failure
Cisco password cracker
Cisco Wireless mode