Monthly Archive: October 2019

Recommended configuration for WLAN-VLAN mapping

When configuring Cisco WLC WLANs, there are three WLAN-VLAN mapping options. AP-Specific Group-Specific Wlan-Specific The difference between AP-Specific and the other two WLAN-VLAN mappings is that the AP-Specific configuration is saved in the AP’s...

PCAP capture on ISE

ISE can generate PCAP capture very simply(Compared to SPAN), which is really useful for troubleshooting network issue.

How to upgrade IOS AP from ROMMON

Press the ESC button during AP startup to enter ROMMON mode. Then use the following command to upgrade the IOS AP. The following is the upgrade process, I used an AIR-CAP3602I-A-K9. 1. Set the...

License limitation of AIR-CT5508-12-K9

We know that the maximum capacity of the AIR-CT5508 license is 500 APs. But there are extra cases on AIR-CT5508-12-K9. The Cisco documentation is explained below. A 5500 Series WLC with a base license...

Priority order of MAC Filtering on the WLC

We know that there are two types of MAC Filtering for WLC. Local MAC authentication MAC authentication using a RADIUS server When we are designing a network environment, we may be in a situation...

How to configure NTPv4 on the WLC

In this post I will show how to configure NTPv4 on the Wireless LAN Controllers. As I mentioned in the last post “NTPv4 causes the WLC to fail to synchronize time“, “NTPv4 protocol is...