Cisco Option 43 Generator
Option 43 can be used to discover WLC or convert EWC/ME to CAPWAP. This is a really useful feature, and I often need to use it in my tests. But its format conversion is...
Tagged: AP
ax-udl: Cisco Wireless Syntax Highlight Rules for Notepad++
Notepad++ is often used in my work, mainly for analyzing logs. If I can mark some important content in advance, it will greatly improve my work efficiency. So I started the ax-udl project, which...
No valid user found, please configure a valid user from Controller
If you are using Cisco Catalyst 9800 Series Wireless Controller, you may not be able to log in to the AP after AP Join and the following error message appears. Probably for security reasons,...
How to configure Splash Page Redirect (WLC + ISE)
In this post I will show how to configure Splash Page Redirect. The logic of Splash Page Redirect is to use 802.1X for identity authentication. When the authenticated user tries to access the webpage,...
How to recover password for Cisco lightweight access point
There are two common methods to recover password for Cisco lightweight access points. Reset LAP through with Controller CLI This method is limited to the case where the AP has joined the WLC. config...
Understanding Aggressive Load Balancing
For wireless environments, there’s competition everywhere. If an AP serves many clients, there must be delays and packet loss. Aggressive Load Balancing was created to solve this problem, the number of clients connected to...
Cisco Wave2 AP and WPA2 TKIP
If you are using Wave2 AP and WPA2 TKIP is enabled, it may cause client connection problems. This is because the Wave2 AP does not support WPA2 TKIP. In versions 8.4 and above, the...
Mobility Express mac flapping
Cause Analysis Mobility Express environment allows redundancy, If the Master AP fails, another AP(MOBILITY EXPRESS CAPABLE image installed) will become the Master AP. VRRP plays an important role in the Failover process of ME,...
Configuring LAG for the AP
Configuring LAG(link aggregation) allows the AP to provide 2 Gbps uplink. Configuring WLC Use the command “config ap lag-mode support enable” to enable global LAG support. This will cause the DTLS connection to be...
What does asterisk mean in the show clock of the AP?
We know that the asterisk in the Catalyst means <Time is not authoritative>. *—Time is not authoritative.(blank)—Time is authoritative..—Time is authoritative, but NTP is not synchronized. https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750e_3560e/software/release/12-2_55_se/configuration/guide/3750escg/swadmin.html Does AP mean the same thing? The...
The difference between K9 and K9C in the 1800/2800/3800 series
For the 1800/2800/3800 series, there are two models, one is K9 and the other is K9C. C in K9C means Configurabule. Usually, the K9C image at the factory is Mobility Express controller software, and...
CDP negotiation of WLC/AP
The TLV list can filter the values contained in the CDP packet. What makes me curious is what is the condition for the successful CDP negotiation of the WLC or AP. The required fields...
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...
Mobility Express Master AP client connection limit
Updated on December 15 The Master AP threshold should be 25 instead of 50. The following is official Cisco document. If there are more than 25 Access Points in a Mobility Express network, the...
How to recovery AP from u-boot mode (AP2800/AP3800)
The following is the recovery method when the AP stuck in u-boot mode. It should be noted that these methods have certain risks. 1. Change the bootcmd variable It is possible for the AP...
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...
How to configure Wired Guest Access
In this post, I will review how to configure Wired Guest Access. Now almost all clients support wireless, it seems that the “Wired Guest Access” function is useless. But in fact, “Life is full...
How to reset the AP’s Syslog settings
By default, the Syslog address of AP is displayed as below. If you set the Syslog server address and want to return to the initial state, you can use the following commands. The test...
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