N:1 VLAN (N:1 User Mode):

N:1 can also be called shared VLAN, so in this mode MAC learning function of the bridge ports must not be disabled.

1.Replaced N:1

In this mode, the system will change the user port’s C-Tag to the Uplink port’s S-Tag. And the mapping is N to 1, so a user port’s C-Tag can’t be used for another VLAN translation rule. But an uplink port’s S-Tag can be used for another N:1 VLAN translation rule.

So in this mode several bridge ports can have the same VLAN cross-connect rule.

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