netdev - Re: query on VLAN with linux DSA ports

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Message-ID: <20241029153614.2cdt2kyhn7sb6aqi@skbuf>
Date: Tue, 29 Oct 2024 17:36:14 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: SIMON BABY <simonkbaby@...il.com>
Cc: Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org
Subject: Re: query on VLAN with linux DSA ports

On Thu, Oct 24, 2024 at 08:15:50AM -0700, SIMON BABY wrote:
> Any advantages of using vlan aware bridges?

Bridges can have more than one lower interface, unlike VLAN (8021q) interfaces.
The lower interfaces of a bridge will forward packets between each other
according to the destination MAC address (optionally + VLAN ID), which is
something VLANs don't do.

I don't believe that a bridge with a single lower interface (port), as in
your example, is exactly "intended use".