About nikolas-pereira

nikolas-pereira · 07-03-2025

Hello everyone, I am experiencing frequent crashes on my Cisco WLC 5508 running version 8.0.140.0. The WLC is out of support and I cannot upgrade to a newer version, and I honestly noticed that there are reports of bugs with this same task in newer v...

nikolas-pereira · 03-26-2025

So, our Guest wireless network has been facing some issues for a while now. Basically, iOS and Android devices connect to the Guest network and are almost instantly redirected to the authentication portal. However, Windows devices take a long time to...

nikolas-pereira · 09-09-2024

Hello everyone. I want to delete some logs inside Cisco 9120axi access points, in the flash filesystem. But, when i try to delete with the command Delete i'm can't find the flash directory. i have tryed all combinations to find the flash filesystem...

nikolas-pereira · 09-06-2024

Our Data Center "B" is going to move, and we have a WLC 5508 with 100 Access Points. To prevent the access points from not working, the customer wants to replicate all the settings from the WLC 5508 in Data Center B to a WLC 5508 in Data Center "A" w...

nikolas-pereira · 08-26-2024

We have a 9800 controller running the version Cupertino 17.9.4a and the Rommon version 16.10(2r). We want to upgrade it to version 17.12.3. My question is whether it's necessary to update the Rommon to avoid issues during this upgrade?

nikolas-pereira · 12-12-2025

I am noticing a very recurring issue related to the Catalyst Center certificate and the 9200L switches in our inventory. It appears that all switches running version 17.12.4, 17.6.4, and some other versions are experiencing a certificate enrollment ...

nikolas-pereira · 08-28-2025

Yes, but the problem in my case was the gateway duplicated to this network.

nikolas-pereira · 08-14-2025

I solved an identical issue today. The images were not loading on the portal, and the problem was that the Virtual IPv4 address was not configured in the global parameter-map. To fix it, we set the IPv4 address in the global parameter-map. More detai...

nikolas-pereira · 07-15-2025

was set to zero, so that the devices would remain on the list until the complaint reached support and they removed the MAC from the list. I set it to keep it for only 3 days now.

nikolas-pereira · 07-14-2025

We found the trigger for the crash. Basically, when the WLC accumulated a very large list of dynamically excluded clients, and we accessed that list through the GUI, it crashed. To mitigate this, we can configure the deletion to last only a few days ...

Member Since	‎07-12-2024 11:47 AM
Date Last Visited	‎12-17-2025 02:24 PM
Posts	26
Total Helpful Votes Received	11

User Statistics

User Activity

Frequent WLC 5508 Crashes and EmWeb process using too much CPU.

Windows taking a long time to open Guest Portal - Cisco ISE

How to delete images and logs in Cisco 9120axi access points

Moving WLC to a new Data Center

Why upgrade Rommon in c9800

Re: AMA: Cisco Catalyst Centre Inventory and Certificate

Re: Windows taking a long time to open Guest Portal - Cisco ISE

Re: Cisco EWC Webauth Custom Page Logo not showing

Re: Frequent WLC 5508 Crashes and EmWeb process using too much CPU.

Re: Frequent WLC 5508 Crashes and EmWeb process using too much CPU.