How to enable logs on LTM?

You can see log on console through SSH. Type : tail -f /var/log/ltm You can set the log level on System > Logs > Configuration

If you need more logs, you can use iRule in order to display what you want.

What kind of log do you want to get ?

For HTTP Request, I advice you to use iRule :

https://devcentral.f5.com/articles/-the101-irules-101-logging-amp-comments.UkqbE2RRntY

when HTTP_REQUEST {
log local0. “Requested hostname: [HTTP::host] from IP: [IP::local_addr]”
}

For Member UP and DOWN : tail -f /var/log/ltm

Thanks. Now I am getting logs in LTM.