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Cisco Bug: CSCvu76561 - Multiple user-class option to be validated in the extension

Last Modified

Sep 11, 2020

Products (1)

  • Cisco Broadband Access Center for Telco and Wireless

Known Affected Releases

6.2

Description (partial)

Symptom:
As per RFC 3315 for User Class we will have Option number, Length followed by User-data. Basically it’s like single data only but inside the user-class-data it may have one or more instances. Basically in PCP we do the model  design based on the RFC and we won’t consider data’s inside data since it may vary from one device/model to other. 

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       OPTION_USER_CLASS       |          option-len           |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      .                                                               .
      .                          user-class-data                      .
      .                                                               .
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
In case if the user-class-data has multiple values those length won't be calculated so design needs to be changed to handle this scenario for customer.

Conditions:
When device is sending multiple values for the option user-class and the value which needs to be validated is not present in the order first in the sequence. Then those values won't be validated.
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