Last Modified: Apr 29, 2021
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Known Affected Versions:
15.1.0, 220.127.116.11, 18.104.22.168, 22.214.171.124, 126.96.36.199, 188.8.131.52, 15.1.1, 15.1.2, 184.108.40.206, 15.1.3, 16.0.0, 220.127.116.11, 16.0.1, 18.104.22.168
Opened: Apr 13, 2021
GTP version 1 and GTP version 2 disagree on message type designations, so blocking a given message type has a different meaning depending on the GTP version.
The device might drop GTP message types that are not intended to be dropped.
Compliance check 10208 is configured in an environment where different versions of GTP traffic might be encountered.
If the environment supports/expects only GTP version 1 or version 2 traffic, use compliance check 10223 gtp_disallowed_version to exclude all traffic from the unexpected GTP type to eliminate the message type ambiguity.