7-27
Cisco Wireless LAN Controller Configuration Guide
OL-9141-03
Chapter 7 Controlling Lightweight Access Points
Performing a Link Test
Figure 7-10 All APs > Details Page
This page shows the five data elements of the access point UDI under Inventory Information.
Using the CLI to Retrieve the Unique Device Identifier on Controllers and
Access Points
Enter these commands to retrieve the UDI on controllers and access points using the CLI:
• show inventory—Shows the UDI string of the controller. Information similar to the following
appears:
NAME: "Chassis" , DESCR: "Cisco Wireless Controller"
PID: WS-C3750G-24PS-W24, VID: V01, SN: FLS0952H00F
• show inventory ap ap_id—Shows the UDI string of the access point specified.
Performing a Link Test
A link test is used to determine the quality of the radio link between two devices. Two types of link-test
packets are transmitted during a link test: request and response. Any radio receiving a link-test request
packet fills in the appropriate fields and echoes the packet back to the sender with the response type set.
The radio link quality in the client-to-access point direction can differ from that in the access
point-to-client direction due to the asymmetrical distribution of transmit power and receive sensitivity
on both sides. Two types of link tests can be performed: a ping test and a CCX link test.
With the ping link test, the controller can test link quality only in the client-to-access point direction.
The RF parameters of the ping reply packets received by the access point are polled by the controller to
determine the client-to-access point link quality.
To Next Page
Loading...
Need help?
General
