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[EX] Example Configuration - Q-in-Q Tunneling on EX4200

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Article ID: KB31086 KB Last Updated: 29 Sep 2016Version: 1.0
Summary:

This article provides an example configuration for Q-in-Q tunneling on EX4200. The mapping option allows you to assign an S-VLAN to a specific C-VLAN on an interface.

Solution:

According to the Juniper documentation, Understanding Q-in-Q Tunneling on EX Series Switches:

"The mapping a specific interface approach has two suboptions for treatment of traffic: swap and push. When traffic that is mapped to a specific interface is pushed, the packet retains its tag as it moves between the S-VLAN and C-VLAN and an additional VLAN tag is added to the packet. When traffic that is mapped to a specific interface is swapped, the incoming tag is replaced with a new VLAN tag, as previously described in How VLAN Translation Works. You must specify a VLAN tag with the swap operation; you cannot use the native keyword."

Example:

[edit vlans] user@Bridge-A#
show v200 {
vlan-id 200;
interface {
ge-0/0/10.0;
ge-0/0/13.0 {
mapping {
100 {
push;
}
}
}
}
dot1q-tunneling;
}

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