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 300-440 Exam - Topic 5 Question 5 Discussion

Refer to the exhibits.Refer to the exhibit. An engineer successfully brings up the site-to-site VPN tunnel between the remote office and the AWS virtual private gateway, and the site-to-site routing works correctly. However, the end-to-end ping between the office user PC and the AWS EC2 instance is not working. Which two actions diagnose the loss of connectivity? (Choose two.)
B) Check the security group rules for the host VPC. and C) Check the IPsec SA counters.
A) Check the network security group rules on the host VNET.
D) On the Cisco VPN router, configure the IPsec SA to allow ping packets.
E) On the AWS private virtual gateway, configure the IPsec SA to allow ping packets.

Cisco 300-440 Exam - Topic 5 Question 5 Discussion

Actual exam question for Cisco's 300-440 exam
Question #: 5
Topic #: 5
[All 300-440 Questions]

Refer to the exhibits.

Refer to the exhibit. An engineer successfully brings up the site-to-site VPN tunnel between the remote office and the AWS virtual private gateway, and the site-to-site routing works correctly. However, the end-to-end ping between the office user PC and the AWS EC2 instance is not working. Which two actions diagnose the loss of connectivity? (Choose two.)

Show Suggested Answer Hide Answer
Suggested Answer: B, C

The end-to-end ping between the office user PC and the AWS EC2 instance is not working because either the security group rules for the host VPC are blocking the ICMP traffic or the IPsec SA counters are showing errors or drops. To diagnose the loss of connectivity, the engineer should check both the security group rules and the IPsec SA counters. The network security group rules on the host VNET are not relevant because they apply to Azure, not AWS. The IPsec SA configuration on the Cisco VPN router and the AWS private virtual gateway are not likely to be the cause of the problem because the site-to-site VPN tunnel is already up and the site-to-site routing works correctly.Reference:=

Designing and Implementing Cloud Connectivity (ENCC, Track 1 of 5), Module 3: Configuring IPsec VPN from Cisco IOS XE to AWS, Lesson 3: Verify IPsec VPN Connectivity

Security for VPNs with IPsec Configuration Guide, Cisco IOS XE, Chapter: IPsec VPN Overview, Section: IPsec Security Association

AWS Documentation, User Guide for AWS VPN, Section: Security Groups for Your VPC


by Helene at Mar 10, 2024, 12:38 AM

Limited Time Offer

25%

Off

Get Premium 300-440 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

0/2000 characters
Submit Cancel
Melissa
9 months ago
Definitely check the network security group rules too!
upvoted 0 times
...
Jeannine
9 months ago
Wait, why would you need to configure the IPsec SA for ping? Seems odd.
upvoted 0 times
...
Elin
10 months ago
I think checking the IPsec SA counters is also important.
upvoted 0 times
...
Juliana
10 months ago
Totally agree, that’s a common issue!
upvoted 0 times
...
Virgina
10 months ago
Check the security group rules for the host VPC.
upvoted 0 times
...
Ronny
10 months ago
I think I read that allowing ping packets on the Cisco router is important, so D might be worth considering as well.
upvoted 0 times
...
Jaime
11 months ago
I feel like I should check both the network security group and the VPC security group rules, but I can't recall which one is more critical.
upvoted 0 times
...
Wendell
11 months ago
I'm a bit unsure, but I think checking the IPsec SA counters could help diagnose the issue too. Wasn't there a similar question about that?
upvoted 0 times
...
Denny
11 months ago
I remember something about checking security group rules being crucial for connectivity issues, so maybe B is a good choice.
upvoted 0 times
...
Gabriele
11 months ago
This seems like a tricky one. I'm not sure where the problem is exactly. I guess I'll start with the security group rules and go from there. Hopefully, I can figure it out.
upvoted 0 times
...
Jacqueline
11 months ago
Okay, I think I've got a good strategy here. I'll check the security group rules first, and if that doesn't work, I'll look into configuring the IPsec SA to allow ping packets on the Cisco VPN router or the AWS private virtual gateway.
upvoted 0 times
...
Solange
11 months ago
Hmm, I'm a bit confused. The VPN tunnel is working, so the issue must be somewhere else. Maybe I should check the IPsec SA counters to see if there are any errors or dropped packets.
upvoted 0 times
...
Ona
11 months ago
This question looks straightforward. I'll start by checking the security group rules on both the host VNET and the VPC to see if there are any issues with the allowed traffic.
upvoted 0 times
...
Ronald
11 months ago
Ah, I remember learning about Custom Alerts in class. I believe the correct answer is B, but I'll double-check the details.
upvoted 0 times
...
Na
11 months ago
Time management is crucial here. I'll quickly eliminate options that sound obviously correct and focus on finding the statement that seems off.
upvoted 0 times
...
Raul
11 months ago
I think all the options here sound like benefits, but isn't an audit mainly for internal control and not necessarily for streamlining? I'm a bit confused about that.
upvoted 0 times
...
Agustin
11 months ago
Okay, I think I know this one. A 3x6 FRA is a forward rate agreement, so the price would be based on the 3 month and 6 month interest rates, right?
upvoted 0 times
...
Reuben
11 months ago
I'm not entirely sure, but I think the Multimedia Contact Server alone might not be sufficient for some deployments. I need to think back on that one.
upvoted 0 times
...
Meaghan
2 years ago
I think we should configure the IPsec SA on the Cisco VPN router to allow ping packets.
upvoted 0 times
...
Delmy
2 years ago
We should also check the IPsec SA counters to see if there are any issues there.
upvoted 0 times
...
Yvonne
2 years ago
I agree with Elenor. We need to make sure the rules are not blocking the traffic.
upvoted 0 times
...
Elenor
2 years ago
I think we should check the network security group rules on the host VNET.
upvoted 0 times
...
Isaac
2 years ago
I think we should configure the IPsec SA on the Cisco VPN router to allow ping packets.
upvoted 0 times
...
Kirk
2 years ago
We should also check the IPsec SA counters to see if there are any issues there.
upvoted 0 times
...
Nathalie
2 years ago
I agree with Micheal. We need to make sure the rules are not blocking the traffic.
upvoted 0 times
...
Micheal
2 years ago
I think we should check the network security group rules on the host VNET.
upvoted 0 times
...
Felix
2 years ago
You guys are on the right track. But don't forget to check the AWS private virtual gateway as well. It could be an issue with the configuration there, not just the Cisco router. We need to cover all our bases.
upvoted 0 times
...
Maryann
2 years ago
Hmm, I'm leaning towards checking the security group rules first. That seems like the most logical step. I mean, the VPN tunnel is up, so the issue has to be somewhere in the network security.
upvoted 0 times
...
Youlanda
2 years ago
I agree, the security group rules are a good place to start. But we should also check the IPsec SA counters to see if there are any issues with the VPN tunnel itself. And we might need to configure the IPsec SA to allow ping packets on either the Cisco VPN router or the AWS private virtual gateway.
upvoted 0 times
Lawana
2 years ago
B) Check the security group rules for the host VPC.
upvoted 0 times
...
Lindy
2 years ago
Agreed, configuring the IPsec SA to allow ping packets on the gateway could help resolve the ping issue.
upvoted 0 times
...
Lemuel
2 years ago
E) On the AWS private virtual gateway, configure the IPsec SA to allow ping packets.
upvoted 0 times
...
Vernell
2 years ago
Yes, checking the IPsec SA counters is important to diagnose any tunnel issues.
upvoted 0 times
...
Sanjuana
2 years ago
D) On the Cisco VPN router, configure the IPsec SA to allow ping packets.
upvoted 0 times
...
Sue
2 years ago
C) Check the IPsec SA counters.
upvoted 0 times
...
Lai
2 years ago
A) Check the network security group rules on the host VNET.
upvoted 0 times
...
...
Lelia
2 years ago
This seems like a tricky question. The site-to-site VPN tunnel is working, but the end-to-end ping is not. I'm thinking we need to look at the security group rules on both the host VNET and the VPC. Might be an issue with the ICMP protocol not being allowed.
upvoted 0 times
...

Save Cancel