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Zorluk: OrtaWireless Principles and Architecture

Match each Cisco Split-MAC architecture component or CAPWAP feature on the left with its primary function or operational characteristic on the right.

  • Lightweight Access Point (LAP)Handles real-time MAC functions including beacon transmission, probe responses, and frame buffering.
  • Wireless LAN Controller (WLC)Handles non-real-time MAC functions including 802.11 authentication, association processing, and frame translation.
  • CAPWAP Control TunnelExchanges management frames encrypted with Datagram Transport Layer Security (DTLS) over UDP port 5246.
  • CAPWAP Data TunnelTransports encapsulated user data traffic between the access point and controller over UDP port 5247.

Cevap

Lightweight Access Point (LAP) matches with handling real-time MAC functions like beacons and probe responses. Wireless LAN Controller (WLC) matches with handling management MAC functions like client authentication and association. CAPWAP Control Tunnel matches with exchanging encrypted management messages over UDP port 5246. CAPWAP Data Tunnel matches with carrying client data traffic over UDP port 5247.
Each component correctly pairs with its role in Cisco centralized wireless deployment: LAPs handle real-time RF MAC duties locally; WLCs handle management MAC functions centrally; CAPWAP Control operates on UDP port 5246 with DTLS encryption; and CAPWAP Data carries client payload packets over UDP port 5247.

Adım Adım Çözüm

1
Identify the responsibilities assigned to the Lightweight Access Point (LAP) under Cisco Split-MAC architecture.
Real-time operations directly affecting radio hardware (such as beaconing, probe responses, and MAC layer encryption/decryption) are processed locally by the LAP.
Real-time MAC tasks require microsecond latency, making transmission across a WAN or LAN to a central WLC impractical.
2
Identify the responsibilities assigned to the Wireless LAN Controller (WLC).
Management and control plane tasks (such as 802.11 authentication, association handling, frame translation, and quality of service policy enforcement) are processed centrally by the WLC.
Centralizing management MAC tasks simplifies policy enforcement and wireless network administration across multiple APs.
3
Differentiate between CAPWAP Control and CAPWAP Data transport characteristics.
Control traffic uses UDP port 5246 (secured with DTLS), while Data traffic uses UDP port 5247.
Separating control and data plane transport protocols allows independent security, QoS, and routing mechanisms for management versus client payload traffic.

Anahtar Kavram

Cisco Split-MAC Architecture and CAPWAP Protocols
Tahmini Süre:1m 30s
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Konular

Wireless Principles and Architecture

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