Test Case: LTE Standard Authentication

1. Description

Validates the standard authentication and accounting flow for a mobile broadband user connecting via the dbnbb APN. This test ensures the AAA correctly identifies LTE traffic, applies the simplified auth policy, and begins usage tracking.

2. Configuration Setup (Simulated via radclient/cURL)

  • Subscriber ID: 94812404502

  • APN (Called-Station-Id): dbnbb

  • IMSI: 413111400926027

  • NAS-Identifier: pili-smf02

3. Authentication Walkthrough

  1. Access-Request Dispatch A packet arrives at the ent_lte port with Called-Station-Id = "dbnbb". The server recognizes the LTE APN and calls lte_auth_policy.

  2. Policy Execution The policy sets Cleartext-Password = "dialog".

  3. Credential Matching The pap module compares the request password against the standardized "dialog" string.

  4. Acceptance The server issues an Access-Accept with the relevant 3GPP parameters and session limits.

4. Accounting Walkthrough

  1. Start Packet The SMF sends an Accounting-Start containing Framed-Address = 10.69.141.235. The lte_sql module creates a new session record in the database.

  2. Interim Update Periodic updates (e.g., every 3600s) report usage. Example: Acct-Input-Octets = 209952657, Acct-Output-Octets = 658711202.

  3. Stop Packet The session terminates. The AAA records the final octet counts and closes the session with a timestamped entry.

Final Session Stats:
Duration: 48456s
Total Octets: ~1.4GB