Exam JN0-360 topic 3 question 174 discussion

Actual exam question from Juniper's JN0-360

Question #: 174
Topic #: 3

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?

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

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Suggested Answer: B 🗳️
When a Junos device receives two similar route advertisements from different BGP peers, it will select the route will the lowest MED value. BGP route selection proceeds in this manner:
✑ Prefer the highest local-preference value
✑ Prefer the shortest AS-path length
✑ Prefer the lowest origin value
✑ Prefer the lowest MED value
✑ Prefer routes learned from an EBGP peer over an IBGP peer
✑ Prefer best exit from AS
✑ For EBGP-receive routes, prefer the current active route:
✑ otherwise, prefer routes from the peer with the lowest RID
✑ Prefer paths with the shortest cluster length
✑ Prefer routes from the peer with the lowest peer ID

by DIbyam at May 30, 2021, 11:39 a.m.

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DIbyam

3 years, 11 months ago

D is correct because BGP Path Attributes are Next-HOP, Weight, LP, Originate, AS-Path Length, Origin-Type, MED, Path(IGP>EGP), Next-Hop IGP Metric, Multipath, Age ,Router's ID, Minimum Cluster-List Length and Neighbor's IP Address(Lower)

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Exam JN0-360 topic 3 question 174 discussion

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DIbyam

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