Conclusions
The transmission and processing costs of S-BGP are not significant
The proposed distribution mechanisms for certificates, CRLs, and AAs is viable
Storage overhead exceeds the capacity of existing routers, but adding adequate storage is feasible, especially for ISP BGP speakers
Testing and deployment issues
- Cisco handling of optional, transitive path attributes
- Intra-domain distribution of S-BGP attribute
But deployment poses a chicken and egg problem!