I searched a google lot but am not able to find topic which can tell me the difference betweens inner vlans and outer vlans. Or Atleast find more detail about them.

Can anyone please explain on this or at least give me some links to read about them

2 Answers 2


When working with Q-in-Q, where there's an 802.1q tag within a tag, the inner and outer vlans are the inner most and outer most tags.

  • Is there online link for that to get more info
    – Mirage
    Commented Jul 28, 2015 at 6:11
  • google "q-in-q" or "inner vlan"
    – Ricky
    Commented Jul 28, 2015 at 7:08
  • thanks i have read the concept , When the Service provider tags with Outer valn , is it possible that two packets from different customer have same Inner vlan and outer vlan . or they has to different or it does not matter
    – Mirage
    Commented Jul 28, 2015 at 22:44

-inner vlan is customer

-outer vlan is net

  • 2
    Welcome to this Stack Exchange. Although your answer explains how inner and outer VLANs can be used, they do not explain what the difference is. There are many more ways you can use inner and outer VLANs. Please consider improving your answer by adding additional information.
    – Teun Vink
    Commented Oct 4, 2018 at 7:11

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