Discuss HP HPE7-A01 Exam Topic 8 Question 15

A customer is using a legacy application that communicates at layer-2. The customer would like to keep this application working across the campus which is connected via layer-3. The legacy devices are connected to Aruba CX 6300 switches throughout the campus.

Which technology minimizes flooding so the legacy application can work efficiently?

AGeneric Routing Encapsulation (GRE)

BEVPN-VXLAN

CEthernet over IP (EolP)

DStatic VXLAN

Suggested Answer: A

Active gateway is a first hop redundancy protocol that eliminates a single point of failure. The active gateway feature is used to increase the availability of the default gateway servicing hosts on the same subnet. An active gateway improves the reliability and performance of the host network by enabling a virtual router to act as the default gateway for that network.If you have enabled active gateway, VRRP is not required3. Active gateway is similar to VRRP in that routed traffic from the VSX node is sourced from the switch interface MAC and not the virtual MAC address (VMAC). Each active gateway sends a periodic broadcast hello packet to avoid VMAC aging on the access switches.The switch views the active gateway IP as a self IP address3.Active gateway is preferable over VRRP because with VRRP traffic is still pushed over the ISL link, resulting in latency in the network3. Therefore, VRRP and active gateway are mutually exclusive on a VLAN, and answer A is correct.

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34 comments · newest first

Latrice 11 months ago

Not sure if static VXLAN is the right choice for this scenario.

Quentin 11 months ago

Definitely EVPN-VXLAN, it’s the best fit here.

Gary 11 months ago

Surprised they still rely on layer-2 for this!

Jessenia 12 months ago

I think GRE could work too, but not as efficient.

Judy 12 months ago

EVPN-VXLAN is the way to go for minimizing flooding.

Honey 12 months ago

Ethernet over IP sounds familiar, but I can't recall if it specifically helps with flooding. I wish I had reviewed that section more thoroughly!

Marleen 1 year ago

I’m leaning towards EVPN-VXLAN too, but I’m a bit confused about how it compares to Static VXLAN in terms of efficiency.

Tora 1 year ago

I think GRE is more about tunneling and might not really address the flooding issue directly. I feel like I’ve seen a question like this before.

Tawna 1 year ago

I remember studying about how EVPN-VXLAN can help with minimizing flooding in layer-2 networks, but I'm not entirely sure if it's the best choice here.

Erick 1 year ago

I'm pretty confident that EVPN-VXLAN is the way to go here. It allows you to extend layer-2 domains over a layer-3 network while avoiding the flooding issues.

Stefania 1 year ago

Hmm, I'm a bit confused about the difference between the options here. I'll need to review the details of each technology.

Marlon 1 year ago

This seems like a tricky one. I'll need to think through the layer-2 and layer-3 requirements carefully.

Ollie 1 year ago

Okay, I think I've got this. The key is to minimize flooding for the legacy layer-2 application, so EVPN-VXLAN is likely the best choice.

Luis 1 year ago

This seems like a straightforward question on externalities and government intervention. I'll think through the options carefully and choose the one that best addresses the external social cost.

Terry 1 year ago

This seems like a straightforward question about managing resource dependencies in CloudFormation. I think option B is the way to go - using the DependsOn attribute to ensure the RDS instance is created before the EC2 instance.

Shad 1 year ago

Okay, let me think this through. I need to make sure no one else can access the database while I'm setting the password, so I'll probably go with the "Open exclusively" option.

Alesia 1 year ago

I heard the legacy application is so old, it still uses carrier pigeons for communication. EVPN-VXLAN is the perfect solution to keep those pigeons from getting lost!

Rosalind 1 year ago

C) Ethernet over IP? That's a new one to me. I'll have to look that up, but it doesn't sound like the best solution for this scenario.

Trina 1 year ago

↳ replying to Rosalind

C: Ethernet over IP? I'll have to look that up, but it doesn't sound like the best solution for this scenario.

Ettie 1 year ago

↳ replying to Rosalind

A: Definitely, it's a good choice for this scenario.

Kendra 1 year ago

↳ replying to Rosalind

B: Yeah, EVPN-VXLAN should help minimize flooding for the legacy application.

Merilyn 1 year ago

↳ replying to Rosalind

A: I think the best option here is B) EVPN-VXLAN.

Tammi 1 year ago

A) GRE? Really? I thought that was more for IP-over-IP tunneling. This question is all about layer-2 requirements, so GRE doesn't seem like the right fit.

Shaniqua 1 year ago

D) Static VXLAN seems like an interesting option, but I'm not sure if it can handle the legacy application requirements as well as EVPN-VXLAN.

Kaitlyn 1 year ago

↳ replying to Shaniqua

A: Static VXLAN might not be as effective as EVPN-VXLAN for the legacy application's requirements.

Shawna 1 year ago

↳ replying to Shaniqua

B: I agree, EVPN-VXLAN is designed to handle these types of scenarios efficiently.

Virgilio 1 year ago

↳ replying to Shaniqua

A: I think EVPN-VXLAN would be the best choice to minimize flooding for the legacy application.

Refugia 1 year ago

I think the answer is B) EVPN-VXLAN. It's designed to minimize flooding and support legacy layer-2 applications across layer-3 networks.

Jose 1 year ago

↳ replying to Refugia

I've heard that EVPN-VXLAN is specifically designed for situations like this, where you need to support legacy applications across layer-3 networks.

Lisbeth 1 year ago

↳ replying to Refugia

EVPN-VXLAN is definitely the way to go in this scenario. It will help keep the legacy application working efficiently.

Kimi 1 year ago

↳ replying to Refugia

I agree, EVPN-VXLAN is the best option for minimizing flooding and supporting legacy layer-2 applications.

Alpha 2 years ago

I'm not sure, but I think A) Generic Routing Encapsulation (GRE) could also be a possible solution.

Honey 2 years ago

I agree with Delila. EVPN-VXLAN would minimize flooding and help the legacy application work efficiently.

Delila 2 years ago

I think the answer is B) EVPN-VXLAN.

HPE7-A01 Exam - Topic 8 Question 15 Discussion