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Cisco Bug: CSCuq89904 - PGW send CCR-U with Resource Limitation after back-to-back situation

Last Modified

Dec 26, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(927)

Description (partial) 

Symptom:
For VoLTE conference scenarios, PGW send CCR-U with Resource limitation after back-to-back RAR happen.

Conditions:
The procedure is as follows,

1. RAR/RAA to create the dedicated bearer with 2 rule.
2. CBR/Resp with 4 TFTs
3. RAR/RAA to add 2 new rules.
4. UBR/Resp with 4 TFTs
5. RAR/RAA to add 2 new rules.
6. UBR/Resp with 4 TFTs
7. RAR/RAA to delete 2 rules
8. UBReq/Resp to delete 4 TFTs.
9. RAR/RAA to delete 2 rules
10. UBReq to delete 4 TFTs but no UBResp from SGW.
11. RAR/RAA to delete 2 rules
12. DBReq/DBResp for the dedicated baerer.
13 Repeat 1 - 12 several times.
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