CCIE Network Design FAQ: BGP Cores and Network Scalability
Figure: The Network Core
Q1. What is an EGP?
Q2. What prevents iBGP from being an effective IGP?
Q3. Where will routes learned from an eBGP peer be propagated?
Answer: To all peers, iBGP and eBGP.
Q4. Why shouldn’t you redistribute iBGP routes into an IGP?
Q5. What protocol do all BGP packets ride on top of?
Q6. If a neighbor relationship between two BGP peers constantly cycles through the Idle, Active, and Connect states, what action should you take?
Q7. Explain the significance of the next hop in BGP.
Q8. What possible solutions are there for load sharing outbound traffic to multiple ISPs?
Q9. All attributes being the same, what will break a tie in the BGP decision process?
Q10. What two things can be done to reduce the number of updates generated and sent by a router?
Q11. What is the default half-life of a dampened route?
Q12. How does a route reflector advertise routes learned from an iBGP peer?
Q13. What does a confederation of routers appear as outside the confederation area?
Q14. Give an example of an application of conditional advertisement.