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, VRRP is used to detect a failure of Master AP and to elect a new Master. …
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 down. Use the command “config ap lag lag-mode support enable <ap name>” to enable LAG support …
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 following is my verification test. We can see it with an asterisk. Let’s take a look …
Both reset system and restart can reload the WLC. But what is the difference? Why are there two commands? There are two explanations for the commands in the CLI. We can see that the difference between the two is hard reload and soft reload. The test results of the WLC …
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 K9 is CAPWAP lightweight AP software. In fact, you can convert between CAPWAP AP and Mobility …
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 that can be seen on the Cisco official website are Device-ID TLV and Address TLV. The …
I have some virtual machines for testing, but these machines are offline and cannot connect to the Internet. I was having trouble installing the Python module. I can use whl file to install the package, but the package dependencies cannot be installed. This has bothered me for a long time, …
Usually we can connect PC to the Service Port to access the WLC (http/https or SSH/Telnet). At this point we don’t even need to configure gateway for the PC. But if we want to access the WLC remotely through the Service Port, we need some extra configuration. The topology diagram …
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 flash memory. Group-Specific and Wlan-Specific are saved in the WLC. Whenever an AP joins the WLC, …
In the Mobility Express environment, when encountering client connection problems, you may see the following Log in the Debug client output. This is probably because the number of connected clients exceeds its limit. For the Master AP, if the number of APs exceeds 50, the Master AP can connect up …