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Cisco Bug: CSCut50471 - L2TP balanced-mode broken permanently after congestion/network issue

Last Modified

Feb 09, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

17.1.1.58465 19.2.d0 20.0.0 20.0.v0

Description (partial)

Symptom:
Load-balancing functionality breaks intermittently on a GGSN or PGW with L2TP tunnel generation configuration.

In 'Balanced' mode, the GGSN should strive to have equal number of sessions across the 2 tunnels. After some congestion issues or network issues, this seems to get broken.

Conditions:
This is preceded by either network issues or LNS congestion issues.
But it stays broken even after these issues are resolved.
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