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Cisco Bug: CSCut49714 - GEC:QoS: pkt buff util high after apply/remove flat policy w/ fair-queue

Last Modified

Mar 31, 2017

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

15.5(3)S 16.2(0)

Description (partial)

Symptom:
Packet buffer utilization goes high under oversubscription condition.

Conditions:
When using ASR1001-X, ASR1002-X or ESP100/200 hardware with aggregate port-channel feature.     If there has been a QoS policy applied and removed from the port-channel interface which contains the "fair-queue" feature, we might see the packet buffer utilization goes high with oversubscribed traffic condition.   If the packet buffers utilization goes really high, then the important control protocols packets might get dropped.
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