Symptom
High number of backwalks to rec. prefixes happens and it make the convergence time high
Conditions
When the high scale of recursive prefixes are transitioned between
forwarding state (resolving to BGP prefix -> IGP prefix -> next hop
and dropping state (resolving to the BGP prefix -> IGP prefix -> NULL0
Further Problem Description
*PSIRT Evaluation:*
The Cisco PSIRT has evaluated this issue and determined it does not meet the criteria for PSIRT ownership or involvement. This issue will be addressed via normal resolution channels.
If you believe that there is new information that would cause a change in the severity of this issue, please contact psirt@cisco.com for another evaluation.
Additional information on Cisco's security vulnerability policy can be found at the following URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html