What is the working principle of qinq?

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heuhene2014-09-02 11:57:08

Computer networks

heuhene, 2014-09-02 11:57:08

Suppose there is a switch with client vlans 10-30 on ports 1-20, vlan per port, and port 24 of the switch is connected to the router vlan 100, qinq is configured, vlans 10-20 to vlan 100.
Will hosts vlan 10-30 l2 link among themselves or only with a router?

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Vladimir, 2014-09-02
@heuhene

qinq stuffs everything into one vlan 100, it goes straight to the router and deploys on it.
if there is no more turn anywhere on the switches, then they will not intersect in any way.
What's the point of leaving direct Vlans if qinq is already in use?