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Why this physical interface does not have a VLAN-tagged subinterface?

To answer your comment, basically a lot of managed/VLAN-capable switches can support what's known in the Cisco world as a 'Native VLAN'. It's quite easy to understand, basically you state on a whole ...
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Add a linux network bridge device between untagged VLAN1 and tagged VLAN100

The closest I could find was this thread: https://bridge.linux-foundation.narkive.com/KYSQbc1f/bridging-untagged-and-tagged-vlans#post5 which says basically, it doesn't work, you have to coerce ...
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LAN / vLAN security implementation to allow limited internet access

Why do you think need any security policy for the existing situation? It sounds like it pretty much does what you want, if the idea is to prevent the need for Internet access to the machines on vLAN20....
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Selecting a network switch for basic VLAN use to segment logical networks

"Trunk" is an overloaded phrase: it can mean either a port that carries multiple/all VLANs, or it can mean link aggregation where multiple ports are tied together to form a single logical ...
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3 votes
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Selecting a network switch for basic VLAN use to segment logical networks

Any switch with VLAN support will have trunking capability. Trunk ports are used to pass traffic from all vlans between switches. Multiple layer 2 switches will be configured so that the port(s) that ...
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1 vote
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tcpdump and lenght with VLAN

Sending an ICMP packet with a data payload of 120 bytes. The ICMP (echo request) header is 8 bytes for a total ICMP size of 128 bytes. The IPv4 header of the packet carrying this ICMP payload is 20 ...
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Shared network attached storage - trunked with multiple vlans?

I'm not exactly an expert in this area, but I know using multiple interfaces to directly connect a NAS to multiple VLANs happens out in the industry (courtesy of the occasional mention from Lawrence ...
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