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Cisco Bug: CSCun42840 - F3+brkout: ospf cores observed during cfd verification

Last Modified

Jan 31, 2017

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)

OSPF crashes when trying to add a route that changes its type from either discard-internal or discard-external to a different route type (other than NONE). ONLY OSPFv2 in 6.2.6a is affected by this bug.

This issue is related to the presence of discard routes that OSPF adds into the RIB. When the discard route changes its type from discard internal(also discard-external) to some other type (other than NONE), which may be the case if the area range or summary address overlap with one of the component routes, OSPF can crash.

 Both internal and external discard routes are affected by this bug. ONLY OSPFv2 in 6.2.6a is affected.
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