How to automate WLC using Python (CLI)

If you are a wireless network engineer, you may need to frequently obtain logs from Cisco wireless controllers for TAC analysis (yes, TAC always needs show run-config…). show run-config contains almost all WLC information,...

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...

Using RTOS image to recovery WLC

If your WLC failed to load image, you may need to recovery the WLC using RTOS image. We need to contact TAC to get the RTOS image. The following are the upgrade steps. Type...

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...

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...