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4.4.7.4.8 Frame Traffic Flow
When a frame is received from a port, the Managed Switch will go through several
procedures to decide whether the frame will be forwarded or dropped or forwarded with a
tag or without a tag. The forwarding rules for incoming frames are depicted in the flow chart
below.
4.4.7.4.9 How to Configure Q-in-Q?
This section provides an example on how to configure Q-in-Q using 802.1q function. Follow
the steps described blow or use them as reference to set up configurations that are suitable
for your networking environment.
Scenario:
Managed Switch
P1
P23
Step 1. Create a VLAN
Create a VLAN 100 that includes Port 1 and Port 23 as a member port.
Incoming port
Outgoing port
Frame Type
Check
Incoming Rules:
Aware & PVID
Ingress Filter
Check
Forwarding Rules:
VLAN Table
Outgoing Rules:
Egress Mode
VID=X
VID=X+100
Customer Network C-tag=X
Service Provider Network
Q-in-Q
Port 1
PVID=100
Port 23
PVID=1
Port-Based
VLAN
