Having Multiple Native VLANS

[ankitohc]

Team,

Does a company use multiple native VLANs? If yes, in what scenarios? Are there any security risks associated with having multiple native VLANs?

[MHM Cisco World]

In special case multi native vlan allow in network

But I dont recommend not only for security but it make issue with STP.

So avoid using multi native vlan

MHM

[M02@rt37]

Hello @ankitohc 

In scenarios like data centers or shared environments, different tenants might use different native VLANs for their trunk links to segregate their traffic.

As @MHM Cisco World recommend, standardize the native VLAN across the network to reduce management complexity and prevent misconfigurations.

[Richard Burts]

We do not know anything about the environment and that makes it difficult to give good advice. I will take the question in the OP and provide an answer based on the little that we know. If you can refine the question we might be able to give a better answer. The question was "Does a company use multiple native VLANs? If yes, in what scenarios?". My answer is that every trunk has a native vlan. If a company had a network with 6 vlans, then it is quite possible that there would be 6 different native vlans.