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Cisco Bug: CSCuo04583 - SGSN requirement to include rwnd=(a_rwnd- current outstanding data ) > 0

Last Modified

Feb 06, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases


Description (partial)

12.0 47462 SW and Also seen in 14.0

With current design, we are taking care of two factors to check if new data packets cannot be sent:
1. a_rwnd = 0 ( Not happened since RNC always sending 336)
2. total bytes outstanding > current congestion window (False, 1040 < 5960)
So, with a_rwnd received as 336, we always send the data chunks limited by current congestion window(4*MTU)
The requirement is to allow the sending of new chunks if rwnd=(a_rwnd  - current outstanding data) is > 0.
So, we need to fix the same with 3rd additional condition to stop sending the chunk if rwnd is 0
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