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Question Native VLAN assignment at edge switch for traffic purposes

hfakoor222
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If I assign a native VLAN access port at the edge for a given set of nodes,

 

 

and the header remains there

 

Will it get treated as VLAN 10 and not Native VLAN as it moves upstream?

 

I read about using this tactic on a Junos guide page ~ I'm not sure if engineers use this. I haven't read of a Native VLAN tag field in headers, so if this is the case, I'm wondering if this strategy is actually used.

 

 

 

 

 

 

2 Replies 2

Hi

 Native vlan is use in  Trunk mode when you dont want to tag one specific vlan.  Need to check in all switch model but I am pretty sure that port in access mode does not have the option of native vlan in cisco switches.

 

Host-Access-SW1-trunk-SW2
Host send frame UN-TAG 
SW1 check the config of interface "access VLAN X" and forward frame according to VLAN X 
SW1 -SW2 agree the native VLAN is VLAN X
SW1 forward traffic through the tunnel UN-TAG since it native vlan for both SW.

 

Host-Access-SW1-trunk-SW2
Host send frame UN-TAG 
SW1 check the config of interface "access VLAN X" and forward frame according to VLAN X 
SW1 -SW2 agree the native VLAN is VLAN Y
SW1 forward traffic through the tunnel TAG since it native vlan for both SW.