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Cisco Bug: CSCuk55515 - CEF drops 50% opf packets destined for ctunnel

Last Modified

Feb 01, 2017

Products (1)

  • Cisco IOS

Known Affected Releases

12.2(25)S 12.2(25)S2 12.2(27.1.10)SIE7 12.2(27.7)SPI6 12.2(27.7.1)SX 12.2S

Description (partial)

Symptoms: Fifty percent of the packets that are destined for an IP-over-CLNS 
tunnel (CTunnel) are dropped by CEF.

Conditions: This symptom is observed when the router is configured for IPv4 
CEF switching and when the next hop for the CEF-switched packets must be 
reached via the CTunnel.
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