ExamGecko
Question list
Search
Search

List of questions

Search

Related questions











Question 61 - 300-410 discussion

Report
Export

After some changes in the routing policy, it is noticed that the router in AS 45123 is being used as a transit AS router for several service provides. Which configuration ensures that the branch router in AS 45123 advertises only the local networks to all SP neighbors?

A.

Answers
A.

B.

Answers
B.

C.


Answers
C.


D.

Answers
D.

Suggested answer: D

Explanation:

By default BGP advertises all prefixes to external BGP neighbors. This means that if you are multi-homed (connected to two or more ISPs) then you might become a transit AS. For example, ISP 2 in AS 200 can send traffic to your router in AS 100 to reach ISP 3 in AS 300 because you advertised prefixes in ISP 3 to ISP 2.

This is what will be seen in the BGP routing table of ISP1:

asked 07/10/2024
Joseph Mwaura
29 questions
User
Your answer:
0 comments
Sorted by

Leave a comment first