nse7_efw-72 Exam - Question 20

Question

Refer to the exhibits, which contain the network topology and BGP configuration for a hub.

Exhibit A.

Exhibit B.

An administrator is trying to configure ADVPN with a hub and spoke VPN setup using iBGP. All the VPNs are up and connected to the hub. The hub is receiving route information from both spokes over iBGP; however the spokes are not receiving route information from each other.

What change must the administrator make to the hub BGP configuration so that the routes learned from one spoke are forwarded to the other spoke?

Examice · Accepted Answer

In an iBGP setup using ADVPN, for routes learned from one spoke to be forwarded to the other spokes, the hub must be configured as a route reflector. This allows the hub to reflect BGP routes received from one spoke to other spokes within the same AS, ensuring that all spokes receive the necessary routing information. This setup helps avoid the need for full mesh iBGP peering among the spokes, simplifying the network configuration and operation.

Artbrut · Answer

p. 338 study guide.
"If you are using ibgp for advpn, you must configure the hub as a route reflector. So, routes learned from one spoke are forwarded to the other spokes."

truserud · Answer

Correct answer is A, as stated on page 338 in the Study Guide.

33k_ · Answer

You must enable set auto-discovery-sender if you want ADVPN. This setting indicates that when IPsec traffic transits the hub, it should send a shortcut offer to the initiator of the traffic to indicate that it couldperhaps establish a more direct connection (shortcut).

Flo31 · Answer

Answer A

Dranizz · Answer

They are asking about route from each other not being redistributed to each other, not the ADVPN dynamic connexion. And it shows that Route Reflector is not enabled

5deee77 · Answer

p. 338 study guide

Kop01 · Answer

Answer A : p338
"If you are using ibgp for advpn, you must configure the hub as a route reflector. So, routes learned from one spoke are forwarded to the other spokes."

charruco · Answer

A is correct
page 338  Study Guide.

nse7_efw-72 Exam - Question 20

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