BGP Route Reflector

Question 1

What is a BGP Route Reflector?

Answer 1

A BGP Route Reflector is a network routing component for BGP that allows all iBGP speakers within an autonomous system to learn about available routes without creating loops.

It provides an alternative to the full-mesh iBGP topology.

Question 2

How does a BGP Route Reflector work?

Answer 2

A BGP Route Reflector can readvertise routes learned from an iBGP peer to other iBGP peers without causing a routing loop.

Question 3

What are the benefits of using a BGP Route Reflector?

Answer 3

• Simplify route synchronization.
• Reduce network traffic by allowing all IBGP speakers within an autonomous system to learn about available routes without creating loops.

Question 4

How do I configure a BGP Route Reflector?

Answer 4

To configure a BGP Route Reflector, you can use the neighbor route-reflector-client command in router configuration mode to act as the route reflector.

router bgp as-number
neighbor ip-address remote-as as-number
neighbor ip-address route-reflector-client

Question 5

What are some considerations when using a BGP Route Reflector?

Answer 5

• Which router to use as the route reflector?
• Which router to use as the route reflector clients?