Filter
Top Products
Bridge AP to Normal AP.
Q. I recently set up the 4402 Wireless LAN Controller (WLC) to manage
the new Cisco lightweight access points (LAPs). I run PIX 501 version
6.3(5) and also use the PIX as a DHCP server for the clients. However,
whenever the PIX gets a request from the controller for the wireless
clients, it drops the request and the clients do not get an IP address.
Why does this happen?
A. The PIX can act as a relay agent. However, in this case the WLC is a relay agent for the
client. The PIX does not support DHCP requests from a relay agent. It ignores these requests.
Clients must be directly connected to the PIX Firewall and cannot send requests through
another relay agent or a router. The PIX has limited functionality in the context of DHCP. It
can work as a simple DHCP server for internal hosts that are directly connected to it, so it can
maintain its table based on the MAC addresses that are directly connected and that it can see.
That is why an attempt to assign addresses from a DHCP relay are not available and the
packets are discarded.
Refer to Using DHCP Relay for more information on how to use PIX in order to provide
DHCP services.
Q. I have set up a guest Wireless LAN and the controller is physically
separated from my internal LAN. I decided to use the internal DHCP
feature of this controller but my wireless clients do not get IP addresses
from the controller. How do the wireless guest users get IP addresses
from the controller when they are connected on a physically separate
network?
A. One possible solution is to put a DHCP server override on the WLAN settings page for the
SSID in question (in this case, it is guest SSID). Then point this DHCP server override to the
IP address of the port on the controller to which this guest WLAN is associated.
Q. I have a 4400 Series Wireless LAN Controller (WLC) and lightweight
access points (LAPs) registered to the WLC. I have configured WLANs
for the clients to connect to on the WLC. The problem is that the WLC
does not broadcast the service set identifiers (SSIDs) that I configured
for the WLANs. Why?
A. In order for the WLCs to be able to broadcast SSIDs, the Admin Status and the Broadcast
SSID parameter must be enabled for the WLANs. Complete these steps in order to enable
Admin Status and Broadcast SSID:
Go to the controller GUI and choose Controller > WLANs. The WLANs page
appears. This page lists the WLANs that are configured.
1.
Select the WLAN for which you want to enable broadcasting of the SSID and click
Edit.
2.
In the WLAN > Edit page, check Admin Staus in order to enable the WLAN. Also,
check Broadcast SSID in order to ensure that the SSID is broadcast in the beacon
messages sent by the AP.
3.