F5 LTM & APM - Running qkview from CLI

Running qkview from the command line

Impact of procedure: The qkview utility runs a large number of commands when collecting information. This behavior may cause an additional performance burden on systems that are already under heavy load.

1. Log in to the command line.
2. Run qkview by typing the following command:

qkview

The output file name displays when the command has completed.

3. Collect the output file from the /var/tmp/ directory, by copying the file to an external host using a utility such as ftp or scp.

Note: You may also run qkview by using the tmsh run /util qkview command.

Using qkview command line options

Impact of procedure: Performing the following procedure should not have a negative impact on your system.

1. To view the list of qkview command line options, type the following command:
   qkview -h
   
   For example, to reduce the performance burden of qkview, you can run qkview at the lowest possible priority by typing the following command:
   nice -n 19 qkview
   
   Note: For heavily loaded systems, qkview may take a long time to finish running when using nice -n 19.
2. To run the qkview command and specify the file size allowed, use the qkview -s option.For example, to specify no file size limit, type the following command:
   
   qkview -s0

Cisco 5508 Wireless Controller - To enable & Troubleshoot 802.11 A/B/G/N clients

To enable,validate, Troubleshoot 802.11A/B/G/N clients on the wireless controller

Ø  Enable 802.11a

1)      Go to Wireless>802.11a>Network> General >Enable it.

2)      Check wireless >802.11a>High throughput>(11n and 11ac mode are selected.). If you don’t have 11ac at all appearing there , no worries.

3)      Go to wireless >Access points >Radios>802.11a/n/ac to see if the AP you are trying to connect has operational status up.

Ø  Check if the client is connected to 802.11a. Go to Monitor> Clients> search the mac address. It should show there that it is connected on 802.11a. Note down the AP name as well.

1)      Sh ap auto-rf 802.11a <Ap-name>

2)      Sh client detail <mac-address>

3)      Go to the Monitor > clients>mac address>On the left side> Link test. Click on it , it send some packets and check the link quality and give you the results. Take that screen shot.

Ø  Check the performance , speed etc. Again there is no comparison with the wired but yes all the applications should work properly.