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Cisco Bug: CSCum47619 - KT, EPC : SGW. gtpu echo respnse from eNB echo requset is abnormal often

Last Modified

Dec 24, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

12.2(1) 14.0(38) 14.0(43)

Description (partial)

Symptom:
eNB is requesting the gtpu echo message to SGW on S1U.
In a normal, SGW sending the gtpu echo response to eNB on S1U.
However, SGW responses not correctly sometimes as below.
So, S1U path-failure occurred in eNB..

Conditions:
1. Normal
    eNB   ---echo req. (Src 2152 / Dst 2152)----> SGW
    SGW  ---echo res.(Src 2152 / Dst 2152)-----> eNB

2. Abnormal
     eNB   ---echo req. (Src 2152 / Dst 2152)----> SGW
     SGW  ---echo res.(Src 2152 / Dst 4096)-----> eNB
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