Displaying the MAC address of a Switchport in CLI

[DTNappo]

How do I display a MAC Address on a port in CLI - Currently have OS 7.4.2.  This should be very simple but cannot find any documentation.   Also, in the GUI, how do I clear the MAC and IP info when a new device is plugged into the port.  It shows the old MAC and IP even if I bounce the port.

[DTNappo]

Not seeing any instructions

[ozkanaltas]

Hello @DTNappo ,

You can see the Mac address table with this command. 

diagnose switch mac-address list

And also, you can find cli commands for FortiSwitches in this link.

https://docs.fortinet.com/document/fortiswitch/7.4.3/fortiswitchos-cli-reference/452179/diagnose#dia...

[DTNappo]

Went though all the commands and can't seem to find what I am looking for,  I'm an old Cisco guy and still learning the Fortinet.  SO what I am looking for is to see a Certain MAC address coming off a Certain Interface on a switchport.  

[ozkanaltas]

You can use this command with "grep". For example; 

diagnose switch mac-address list | grep "aa:bb:cc:dd:ee"
 

[Toshi_Esumi]

FortiswitchOS doesn't support "grep".

Toshi

[Toshi_Esumi]

or does it?
Looks like does it. Sorry.

Toshi

[Toshi_Esumi]

I don't have a FSW managed by a FGT to test. But it seems to be "diag switch-controller mac-host-switch-port" at least 6 years ago according to this reddit post. I seems to show all switches' all ports though.
https://www.reddit.com/r/fortinet/comments/7vglnk/fortiswitches_managed_by_a_fortigate_question/

Toshi

[Toshi_Esumi]

Sorry. Looks like you're looking for FSW CLI, not managed by FGT.

Toshi

[Nolman]

In order to view the MAC address connected to a specific port of a FortiSwitch managed by a FortiGate (FortiLink), first apply a filter, then apply the show. 

Create filter: 
diagnose switch-controller mac-cache filter intf-name [port]

Show MACs: 
diagnose switch-controller mac-cache show

Clear filter: 
diagnose switch-controller mac-cache filter clear