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Cisco Bug: CSCvj08248 - Packet throughput drops down when enable tunnel visibility with single tcp flow(>1MPPS)

Last Modified

May 29, 2018

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

Gibraltar-16.10.1

Description (partial)

Symptom:
When CU enable NBAR tunnel visibility by below cli
#ip nbar classification tunneled-traffic ?
  capwap    Tunnel type CAPWAP
  ipv6inip  Tunnel type IPv6 in IPv4
  teredo    Tunnel type TEREDO

If there is a big flow (>1MPPS) UDP or TCP taffic, there will be packet drops with interface overrun issue.

Conditions:
Only enable NBAR and tunnel visibility by below cli and one single flow(>1MPPS).
#ip nbar classification tunneled-traffic ?
  capwap    Tunnel type CAPWAP
  ipv6inip  Tunnel type IPv6 in IPv4
  teredo    Tunnel type TEREDO
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