evpn bgp

Question 1

What is BGP type-4 used for?

Answer 1

BGP type-4 is used by EVPN PE routers to discover other routers with the same Ethernet Segment Identifier (ESI).

Question 2

What capability does EVPN provide compared to VPLS?

Answer 2

EVPN provides active-active multi-homing, unlike VPLS.

Question 3

What identifier should be shared by Customer Edge (CE) nodes connected to the same Provider Edge (PE)?

Answer 3

CE nodes should share the same Ethernet Segment Identifier (ESI).

Question 4

What is the ESI value when a CE is single-homed?

Answer 4

The ESI value is zero.

Question 5

What does BGP route type-4 help with?

Answer 5

It helps PE routers connected to the same Ethernet Segment (ES) to discover each other.

Question 6

What is BGP route type-1 used for?

Answer 6

BGP route type-1 is the ethernet auto-discovery route, used for split horizon, fast convergence, and aliasing.

Question 7

What is BGP route type-2 used for?

Answer 7

BGP route type-2 is the MAC/IP advertisement route used to distribute MAC information between PEs.

Question 8

What is BGP route type-3 used for?

Answer 8

BGP route type-3 is the inclusive multicast ethernet tag route, used to establish connection for BUM traffic between PEs.