Hi Ruijie, PVID means port - VID. It is the VLAN ID which a port adds by default to the incoming packets. There can be only one such PVID per port. You first set the PVID to 20 for eth1. But then you set the PVID for br1 to 11. Whenever you set pvid for a bridge interface, all the interfaces connected to it get their PVID changed to bridge's pvid. Hence the final pvid will become 11. Regards, Tanmay
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