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Cisco Bug: CSCsg31867 - Router crashes on large ping pkts with IPSEC/NAT configured

Last Modified

Jan 23, 2017

Products (38)

  • Cisco IOS
  • Cisco AS5400XM Universal Gateway
  • Cisco 1803 Integrated Services Router
  • Cisco VG224 Analog Voice Gateway
  • Cisco 1812 Integrated Services Router
  • Cisco 878 Integrated Services Router
  • Cisco Catalyst 6500 Series Communication Media Module
  • Cisco 7301 Router
  • Cisco AS5350XM Universal Gateway
  • Cisco 7600 Series Communication Media Module
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Known Affected Releases

12.4(11)T 12.4(11)T1 12.4(12.12)PI6f 12.4(12.15)T 12.4(12.5)T 12.4(12.9)PI6 12.4(12.9)T 12.4(4)T1 12.4(9)T1 12.4T

Description (partial)

A Cisco IOS router may experience a unexpected reload. 

This problem occurs in IOS version 12.4(11)T and later when the router
is configured with IPSec and NAT, and when it needs to fragment a large
packet to be encrypted over the IPSec tunnel.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Known Fixed Releases
  • Related Community Discussions
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