Is it possible to go back and make corrections in the WLC configuration wizard at the time of the initial configuration?
Yes, this can be done with the − (hyphen) key. Use this key to re−enter the previous parameter value.
Can we place the lightweight access point (LAP) under Network Address Translation (NAT)? Does LWAPP from access point (AP) to WLC work through NAT boundaries?
Yes, you can place the LAP under NAT. On the AP side, you can have any type of NAT configured, but, on the WLC side, you can have only 1:1 (static NAT) configured. PAT cannot be configured on the WLC side because LAPs cannot respond to WLCs if the ports are translated to ports other than 12222 or 12223, which are meant for data and control messages.
If the WLCs in the same mobility group are separated by Network Address Translation (NAT) boundaries, can they communicate mobility messages with each other?
BEFORE VERSION 4.2
In controller software releases earlier than 4.2, mobility between controllers in the same Mobility Group does not work if one of the controllers is behind a network address translation (NAT) device.
Mobility message payloads carry IP address information about the source controller. This IP address is validated with the source IP address of the IP header. This behavior poses a problem when a NAT device is introduced in the network because it changes the source IP address in the IP header.
AFTER VERSION 4.2
In controller software release 4.2 and later, the Mobility Group lookup is changed to use the
MAC address of the source controller. Because the source IP address is changed due to the
mapping in the NAT device, the Mobility Group database is searched before a reply is sent to
get the IP address of the controller that makes the request. This is done with the MAC address
of the controller that makes the request.
Can a Cisco IOS Software−based access point (AP) that has been converted to lightweight mode register with Cisco 4100 Series WLCs?
No, Cisco IOS Software−based APs that are converted to lightweight mode cannot register with the Cisco 40xx, 41xx, or 3500 WLCs. These lightweight APs (LAPs) can register only with the Cisco 4400 and the 2000 series WLCs.
Next, it’s essential to plan for scalability. As more users join the network, additional access points may need to be added to ensure adequate coverage throughout the area. It’s also important to consider how the network will be secured, both from an authentication standpoint and from a data encryption perspective. Finally, it’s critical to have a plan in place for monitoring and managing the network over time to ensure optimal performance.”
I also utilize software tools such as spectrum analyzers to detect and analyze signals from different frequencies. This helps me pinpoint which frequency is causing the most interference and allows me to adjust my network settings accordingly. Finally, I use specialized antennas and directional antenna arrays to focus and direct the signal away from areas with high levels of interference.”
If you’re looking to break into this in-demand field, you’ll need to be prepared to answer some tough wireless network engineer interview questions. In this guide, we’ll provide you with a list of sample questions and answers that will help you shine in your interview.
As a Wireless Network Engineer, I understand the importance of regularly checking and updating wireless networks. I have experience with both manual and automated processes for monitoring and maintaining wireless networks. I am familiar with industry best practices and standards when it comes to securing and optimizing wireless networks. I am confident that I can help keep your wireless network running smoothly and securely.”
I believe I’m the right person for this job because of my extensive experience in designing and deploying secure wireless networks. I’ve worked with many different types of systems, from small office networks to large enterprise ones. My expertise includes configuring access points, setting up authentication protocols, and ensuring that all security measures are in place. I’m confident that I can help your organization create a secure and reliable wireless network that will be easy for employees to use.”