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- C1111-4PLTEEA, C1121X-8P, C8200-1N-4T and other routers - This was seen during the upgrade of sdwan controllers from 20.9.x to 20.9.x followed by the cEdges upgrade from 17.6.x to17.9.x and from 17.9.x to 17.9.x - After the upgrade, the configured security-types (configure over feature template) were lost and they had only the standard integrity-types. - This caused that the the BFD sessions were down.
After the upgrade: #show sdwan security-info security-info authentication-type deprecated ... security-info integrity-type "ip-udp-esp esp" After attaching the template again without any changes we will see the security info: #show sdwan security-info security-info authentication-type deprecated .... security-info integrity-type "ip-udp-esp-no-id ip-udp-esp esp"
- Deattach and attach the template again without any changes
Routers are unable to build their BFD sessions. 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
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