As shown in the figure, data traffic is forwarded in tunnel mode along the path of STA -> HAP -> HAC -> upper-layer network before roaming. What is the flow direction of data traffic after Layer 3 roaming?
A.
STA -> FAP -> FAC -> HAC -> HAP -> HAC -> Upper-layer network
B.
STA -> FAP -> FAC -> HAC -> Upper-layer network
C.
STA -> FAP -> FAC -> Upper-layer network
D.
STA -> FAP -> FAC -> HAC -> HAP -> Upper-layer network
After Layer 3 roaming, the STA’s traffic is forwarded from the Foreign AP (FAP) to the Foreign AC (FAC), and then to the Home AC (HAC) before reaching the upper-layer network. This ensures that the STA remains on the same subnet without breaking existing sessions .
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit