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Cisco Bug: CSCuq25008 - Route/tunnel recursion leads to STACKLOW and crash

Last Modified

Nov 27, 2020

Products (2)

  • Cisco 2600 Series Multiservice Platforms
  • Cisco 2600 Series Multiservice Platforms

Known Affected Releases


Description (partial)

A router may unexpectedly reload due to a stack overflow condition with the following error -

%SYS-6-STACKLOW: Stack for process TPLUS running low, 0/6000

The crash occurs when tunnel/route recursion is present. This problem has been seen when we learn a route to the tunnel endpoint across the tunnel. In conjunction with that, a static route is configured for a subnet which is routing across the multipoint tunnel and instead of defining the next-hop IP, the interface itself is used.
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