200-355 question 228 discussion


When using multiple SSIDs on a lightweight AP, how does the traffic of each SSID reach
the 802.3 network?

  • A. provide routing between them at the core so that the SSIDs can reach the internet
  • B. configure 802.11q trunking on the Ethernet switch port that is connected to the AP
  • C. configure ACLs at the switch port that will allow all desired SSIDs to pass traffic
  • D. configure the SSIDs on the WLC and it will regulate the traffic based on traffic type
Created 2 months, 3 weeks ago by chrisgapske


Default Local Only mode on a LAP all traffic would go upstream to the WLC on a routed network. It does not ask if it is using flexconnect or Hreap. Trashy question


Not sure what the question is asking? LAPs are in local mode use an access point and tunnel ALL SSID traffic back to the WLC and associated dynamic interface (SSID to VLAN mapping), in which traffic is know on the 802.3. Or we could just be looking at it from a IEEE - layer 1 and layer 2 viewpoint. Note Autonomous APs connect to the BSS via a access point of 802.1q trunk.


BS, WLC requires the trunk, not AP. On AP everything goes into CAPWAP tunnel.


Answer is D. Lightweigh AP port can be either trunk or switchport. Does not mind because el data and control traffic is encapsulated inside CAPWAP tunnel. The controller is the responsible to get this packets, tag then with the correct VLAN id, and send then to the DS where R&S protocols ensure they arrive at destination. If it says flexconnect instead of lightweight, then B can be suitable answer.