FCM9002 USER MANUAL
76-02-095 Rev.B
Page 32 of 145
3.2.2 Pushing S-Tag onto Tagged Frame
When a tagged frame ingresses a user port in Stag mode it will have an Stag
pushed as shown below:
Where
9100
S-Tag Ethertype
PRI
Priority
ID
Stag ID in range 1 to 4095
When the pushed Stag is constructed it gains the Ethertype from the configured
value. The default value is 9100, and setting this to 8100 will give QinQ
operation, effectively VLAN within VLAN encapsulation.
The priority for an tagged frame may either be set to the default port priority, or
be set to inherit a value based on the incoming C-Tag priority.
The ID is the value defined for the flow assigned to the port.