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Zorluk: Çok zorWLAN Infrastructure Connections and LAG

A network engineer is configuring Link Aggregation (LAG) on a Cisco Wireless LAN Controller (WLC) connected to an access layer switch stack. The deployment includes central site Local mode APs and remote branch FlexConnect APs using local traffic switching. Which TWO configuration statements correctly describe the requirements and behavior of this WLAN infrastructure connection setup? (Select two.)

  1. All distribution system physical ports on the Cisco WLC are bundled into a single logical link, requiring the connected switch ports to be configured as a single static EtherChannel (mode ON) without dynamic LACP or PAgP negotiation.Cevap
  2. Switch ports connecting directly to FlexConnect APs operating in local switching mode must be configured as 802.1Q trunks (or VLAN-tagged access ports) to locally bridge client WLAN traffic to the infrastructure switch.Cevap
  3. C
    The switch interfaces connected to the WLC must be configured using LACP active mode to dynamically negotiate link aggregation parameters across the physical member links.
  4. D
    FlexConnect APs operating in local switching mode will automatically redirect all local client data traffic back through the WLC CAPWAP tunnel if CAPWAP connectivity to the controller is lost.

Cevap

The correct requirements are: 1) Switch ports connected to the WLC must be bundled into a static EtherChannel using mode ON because Cisco WLCs do not support dynamic EtherChannel protocols like LACP or PAgP. 2) Switch ports connected to FlexConnect APs using local switching must be configured with appropriate 802.1Q VLAN trunking so local client traffic can be bridged directly to the local network infrastructure.
Enabling LAG on a Cisco WLC consolidates all distribution ports into a single logical link requiring the adjacent switch ports to be placed into a single static EtherChannel (mode ON). Additionally, FlexConnect APs configured for local switching require their direct access switch connections to be configured as 802.1Q trunks (or appropriately tagged ports) so that client VLAN traffic can be locally switched into the wired LAN infrastructure.

Adım Adım Çözüm

1
Analyze WLC LAG behavior and switch link aggregation requirements.
Cisco AireOS WLCs merge all physical distribution ports into a single logical interface that requires static EtherChannel grouping (mode ON) on the connected switch.
The WLC does not support dynamic negotiation protocols such as LACP or PAgP.
2
Analyze FlexConnect AP infrastructure port requirements for local switching mode.
Traffic from SSIDs configured for local switching is mapped directly to VLAN tags on the AP's physical switch interface.
The switch port connecting to the FlexConnect AP must be an 802.1Q trunk (or access port supporting the required VLAN setup) to correctly forward local data frames without sending them through the central WLC CAPWAP tunnel.

Anahtar Kavram

WLAN Infrastructure Link Aggregation (LAG) and FlexConnect AP Switch Port Requirements
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