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Cisco Bug: CSCvv36310 - IP Bad checksum with "Rewrite TTL on Downlink Packets" feature

Last Modified

Sep 29, 2020

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

Description (partial)

IP Bad checksum with "Rewrite TTL on Downlink Packets" feature
Feature URL:

Activating this feature can corrupt the ip checksum on the downlink packets, causing packet drops.

following conditions must apply to be affected by this issue:
-"ip ttl x downlink" is configured under charging-action
-transactional-rule-matching (TRM) is enabled on the relevant rulebase or charging-action.
-Flow Aware Packet Acceleration (FAPA) is not enabled. The active-charging service does not contain the 'accelerate-flow' configuration.
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