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Cisco Bug: CSCun40957 - ISR4400-X CSR1000v Ucode crash when sending large packets over small MTU

Last Modified

Feb 04, 2017

Products (1)

  • Cisco 4000 Series Integrated Services Routers

Known Affected Releases

15.3(3)S 15.4(3)S

Description (partial)

Symptom:
ISR4400-X Ucode Crash on 15.3(3)S, 15.4(1)S, 15.4(2)S
CSR1000V Ucode Crash on 15.4(2)S

Conditions:
When sending a large packet over a small MTU that results in more than 8 fragments, the ucode will crash.
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