JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing — Question 38

You are logged into a Junos device and issue the command show route protocol bgp. You see that the device has received the route 10 0.4/24 from two different
IBGP peers. Local preference, MED, origin, and AS-path values are equal.
Which criterion is used to determine which path will be preferred?

Answer options

• A. cluster length
• B. router ID (RID)
• C. peer ID
• D. IGP cost

Correct answer: B

Explanation

The router ID (RID) is used as the tiebreaker when all other BGP attributes such as local preference, MED, origin, and AS-path are identical. Other options like cluster length, peer ID, and IGP cost would not be applicable in this scenario as they do not serve as the deciding factor when the primary attributes are equal.