Working behaviour of Fortigate Vlan tagging and untaging

[Umesh]

Dear All.

I want to understand deep understanding of vlan tagging and untagging with debug.

Can anyone suggest article or documents accordingly.

thank you.

[adambomb1219]

What exactly do you mean?  Are you asking how VLAN tags work?  How to see them in debugs or PCAPs?

[Umesh]

Yes, wants to check packet details 

[hbac]

Hi @Umesh,

Please refer to https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-capture-VLAN-Virtual-Local-Area-Net...

Regards, 

[AEK]

Hi Umesh

802.1q is a standard, so you can start from Wiki page.

https://en.wikipedia.org/wiki/IEEE_802.1Q

Then for FortiGate you can start here:

https://docs.fortinet.com/document/fortigate/6.2.15/cookbook/402940/vlans

An finally here is a tech tip to create VLAN interface:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-create-a-VLAN-tagged-interface-802-...

[hjhajj]

Hi Umesh,

Greetings of the day!!

For further information about VLANs , you can refer the following article to understand the working of VLANs in NAT mode and transparent mode: https://docs.fortinet.com/document/fortigate/6.2.15/cookbook/402940/vlans

To understand VLAN switch, refer: https://community.fortinet.com/t5/FortiGate/Technical-Tip-Hardware-switch-Software-switch-VLAN-switc...

Harmandeep Kaur Jhajj