300-430 · Question #285
A company has an existing Cisco wireless solution deployed to a remote branch location with centrally switched control and data traffic. A new solution is needed to locally switch client traffic when
The correct answer is A. switchport mode trunk. FlexConnect locally switched SSIDs require the AP's switch port to carry multiple VLANs, so the port must be configured as a trunk to pass VLAN 25 (and others) to the AP.
Question
A company has an existing Cisco wireless solution deployed to a remote branch location with centrally switched control and data traffic. A new solution is needed to locally switch client traffic when Wi-Fi is used. A new SSID that is used only for voice devices must be mapped to an onsite voice VLAN named VLAN 25. Which configuration on the switch interface that connects to the APs meets the requirement?
Options
- Aswitchport mode trunk
- Bswitchport mode access
- Cswitchport mode trunk
- Dswitchport mode access
How the community answered
(32 responses)- A78% (25)
- B13% (4)
- C6% (2)
- D3% (1)
Why each option
FlexConnect locally switched SSIDs require the AP's switch port to carry multiple VLANs, so the port must be configured as a trunk to pass VLAN 25 (and others) to the AP.
When FlexConnect is configured for local switching, client traffic is tagged with the mapped VLAN (VLAN 25 in this case) and forwarded directly out the AP's Ethernet port rather than being tunneled to the WLC. The connected switch interface must be a trunk port so it can carry VLAN 25 and any other locally switched VLANs; an access port would carry only one VLAN and cannot support multiple locally switched SSIDs.
An access port carries only a single untagged VLAN and cannot support multiple locally switched VLANs, preventing the voice VLAN 25 from being transported to the AP.
This choice is identical in configuration to A; it is a distractor duplicate - trunk mode is still the correct mode, but only one correct option is selectable.
Access mode on the switch port restricts the link to one VLAN, which prevents the AP from receiving tagged VLAN 25 traffic required for the voice SSID.
Concept tested: FlexConnect local switching VLAN trunk port configuration
Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-10/config-guide/b_cg810/flexconnect.html
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