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Cisco Bug: CSCun06260 - XE3.13 Gatekeeper Hardening

Last Modified

Nov 18, 2020

Products (2)

  • Cisco ASR 1000 Series Aggregation Services Routers
  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

15.2(4)S3 15.3(2)S 15.3(3)S 15.4(3)S 15.5(2)S

Description (partial)

High latency observed in customer network.

Under certain conditions, particularly under forced test conditions, it is possible to create scenarios where flow lock contention will be very high because of  NAT gatekeeper failures. This happens when a large amount of traffic that does not need to be NAT'd is sent through an interface that has NAT configured. Most traffic hitting a NAT interface should be sent through NAT. If not, it will cause issues around 1Gb of traffic.
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