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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 19.2.d0 20.0.0 20.0.v0

Description (partial)

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.

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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