Deal of The Day! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

Cisco 300-540 Exam - Topic 2 Question 10 Discussion

Refer to the exhibit.Refer to the exhibit. An engineer is troubleshooting an issue where switch LEAF-SW-1 and switch LEAF-SW-2 receive corrupted forwarding and learning information about each other. LEAF-SW-1 and LEAF-SW-2 are configured with BGP EVPN VTEP. Which action resolves the issue?A. On each switch, run the delete suppress-arp command against interface nve1. B. On each switch, configure a different secondary IP address against interface loopback0. C. On LEAF-SW-1, run the host-reachability protocol bgp command against interface nve1. D. On each switch, ensure the same BGP router ID is configured.

Cisco 300-540 Exam - Topic 2 Question 10 Discussion

Actual exam question for Cisco's 300-540 exam
Question #: 10
Topic #: 2
[All 300-540 Questions]

Refer to the exhibit.

Refer to the exhibit. An engineer is troubleshooting an issue where switch LEAF-SW-1 and switch LEAF-SW-2 receive corrupted forwarding and learning information about each other. LEAF-SW-1 and LEAF-SW-2 are configured with BGP EVPN VTEP. Which action resolves the issue?

A. On each switch, run the delete suppress-arp command against interface nve1. B. On each switch, configure a different secondary IP address against interface loopback0. C. On LEAF-SW-1, run the host-reachability protocol bgp command against interface nve1. D. On each switch, ensure the same BGP router ID is configured.

Show Suggested Answer Hide Answer
Suggested Answer:

In a VXLAN BGP EVPN fabric, each VTEP (NVE interface) must use BGP EVPN as the host-reachability protocol so that MAC/IP information and VTEP reachability are exchanged through the control plane.

From the exhibit:

LEAF-SW-1 -- interface nve1

source-interface loopback0

No host-reachability protocol bgp

Host Learning Mode: Data-Plane in show nve interface

LEAF-SW-2 -- interface nve1

source-interface loopback0

host-reachability protocol bgp configured

This mismatch causes one VTEP to rely on data-plane flood-and-learn, while the other uses EVPN BGP control-plane learning, leading to inconsistent and ''corrupted'' MAC/IP and ARP/ND information between the leaf switches.

The fix is to configure LEAF-SW-1 to also use BGP for host reachability:

interface nve1

host-reachability protocol bgp

Options B and D are incorrect because anycast VTEP designs intentionally share the same primary loopback IP while using different secondary IPs and unique BGP router IDs. Option A (removing suppress-arp) does not correct the control-plane mismatch.

Therefore, enabling host-reachability protocol bgp on LEAF-SW-1 (Option C) resolves the issue.


by Corazon at May 07, 2026, 10:54 PM

Limited Time Offer

25%

Off

Get Premium 300-540 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

0/2000 characters
Submit Cancel
Lavonda
3 days ago
I agree, D seems logical. Same BGP router ID helps with consistency.
upvoted 0 times
...
Beth
8 days ago
This question is tricky. I think option D makes sense.
upvoted 0 times
...
Benton
13 days ago
I doubt B will fix it. The router ID consistency is key.
upvoted 0 times
...
Shonda
19 days ago
I’m leaning towards B. Different IPs might resolve conflicts.
upvoted 0 times
...
Gussie
24 days ago
But if the router IDs are different, it won't work anyway. D is solid.
upvoted 0 times
...
Cassi
29 days ago
I feel like option A could help too. Deleting ARP might clear the corruption.
upvoted 0 times
...
Aleisha
1 month ago
I agree, same BGP router ID is crucial for stability.
upvoted 0 times
...
Rodrigo
1 month ago
This question is tricky. I think option D is the best choice.
upvoted 0 times
...
Florinda
1 month ago
I've seen issues like this before, and option C worked for me.
upvoted 0 times
...
Denny
2 months ago
Isn't option B just overcomplicating things?
upvoted 0 times
...
Trina
2 months ago
Wow, I didn't realize the router ID had such an impact!
upvoted 0 times
...
Chau
2 months ago
I disagree, I think option A could be the solution here.
upvoted 0 times
...
Tonette
2 months ago
Option D seems like the right fix. Same BGP router ID is crucial!
upvoted 0 times
...
Sharmaine
2 months ago
I’m leaning towards option C because I remember discussing host reachability protocols in class, but I’m not completely confident about its application in this case.
upvoted 0 times
...
Vernice
4 months ago
I feel like the delete suppress-arp command could help, but I can't recall the exact scenario where we used it.
upvoted 0 times
...
Frank
4 months ago
I think we practiced a similar question where the router IDs were mismatched, and it caused problems. Maybe option D is the right choice?
upvoted 0 times
...
Olen
4 months ago
I remember something about BGP router IDs being crucial for establishing neighbor relationships, but I'm not entirely sure if that's the main issue here.
upvoted 0 times
...

Save Cancel