In Huawei's admission control solution, after the access device receives the CoA-Roquest message or DM-Requst message from the RADTUS server, which RADIUS attribute in the message is used to…

Question

Options

• Acalled-Station-ld
• BFilter-ld
• CNAS-IP-Address
• Dcalling-Station-ld

• A
  3% (2)
• B
  14% (8)
• C
  76% (45)
• D
  7% (4)

Explanation

NAS-IP-Address (Option C) serves as the unique identifier for the access device (NAS) that hosts the user's session. In Huawei's admission control framework, when the RADIUS server sends a CoA-Request or DM-Request, the receiving access device uses the NAS-IP-Address attribute to confirm it is the intended target and to locate the specific user session bound to that device for enforcement actions.

Why the distractors are wrong:

• A (Called-Station-Id): Identifies the destination endpoint of a connection (e.g., AP MAC or BSSID) - it describes network infrastructure, not a specific user session.
• B (Filter-Id): References a named ACL or policy filter to be applied - it's a what to do attribute, not a who is this user attribute.
• D (Calling-Station-Id): Identifies the originating device (e.g., client MAC address), which is used during initial authentication, not for session lookup in CoA/DM message processing within Huawei's solution.

Memory tip: Think of NAS-IP-Address as the "address of the door the user walked through" - Huawei's admission control traces which door (NAS) to find which user to act on, making the NAS IP the anchor for session identification in dynamic authorization messages.

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