Dear All,My basic network: HR dept: 10.20.10.0/24Server: 10.18.200.0/24I'd like to config my core SW 3560 to deny allow access only specify range IP like below: Allow 10.18.200.75 - 80 to 10.20.10.5 - 6  How can I define a config on my core switch?  ...

Hi All,I'm facing the problem is, when my laptop or PC starting, only can use Internet 5 mins, after that cannot suffering the internet about 5 - 10 mins then it back to normal, this stuff happen everyday. But can use communication messenger like sky...