Discuss Cisco 300-410 Exam Topic 12 Question 96

Which Layer 3 VPN attribute allows different customers to connect to the same MPLS network wrth overlapping IP ranges?

AVRF

BRT

CMP-BGP

DRD

Suggested Answer: A

In OSPF (Open Shortest Path First), the MTU (Maximum Transmission Unit) size must match on both sides of a link for OSPF neighbors to form an adjacency12.If the MTU sizes do not match, the OSPF adjacency will not form, and the routers will not become neighbors12.

In this case, R1 cannot establish a neighbor relationship with R2.One possible reason for this could be a mismatch in the MTU size on the interfaces of R1 and R212.

To resolve this issue, you can configure themtu ignorecommand on the interfaces of R1 and R2 (Option A).This command allows OSPF to ignore the MTU size when determining if it can form an adjacency with a neighbor12.This means that even if the MTU sizes do not match, OSPF will still form an adjacency, and R1 and R2 will become neighbors12.

OSPF MTU Mismatch - NetworkLessons.com

Understanding OSPF MTU Mismatch Conditions and Solutions - Cisco

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28 comments · newest first

Lorean 11 months ago

Really? I thought RD was the key here.

Kate 11 months ago

VRF allows overlapping IPs, no doubt about it.

Verdell 11 months ago

Wait, are we sure it's not MP-BGP?

Corinne 11 months ago

Totally agree, VRF is the way to go.

Kendra 12 months ago

It's definitely VRF!

Otis 12 months ago

I’m leaning towards MP-BGP, but I remember it being more about routing updates rather than managing overlapping IPs.

Nida 1 year ago

I’m a bit confused between VRF and RD. I feel like both are related, but I can’t recall which one specifically handles overlapping IPs.

Mabel 1 year ago

I remember practicing a question about MPLS and overlapping IPs, and VRF was definitely mentioned as a solution.

Myra 1 year ago

I think the answer might be VRF since it allows for multiple instances of routing tables, but I'm not completely sure.

Donte 1 year ago

The key here is understanding how MPLS VPNs handle overlapping IP addresses. I'll review that concept before answering.

Holley 1 year ago

Hmm, I'm not sure about this one. I'll have to think it through carefully.

Viva 1 year ago

This question seems straightforward, I think the answer is VRF.

Elke 1 year ago

VRF is the Layer 3 VPN attribute that allows for overlapping IP ranges, right? I'm pretty confident that's the correct answer.

Bobbye 1 year ago

I remember practicing a question like this! I think a worm can replicate by itself, while a virus can't.

Sylvie 1 year ago

This question seems straightforward, I'll go through the options and select the ones that clearly benefit the employee.

Felton 2 years ago

I don't know, man. All this MPLS VPN stuff makes my head spin. At least it's not a question about subnetting or default gateways, am I right?

Janine 1 year ago

↳ replying to Felton

User 2: I think the answer is VRF.

Magnolia 1 year ago

↳ replying to Felton

User 1: Yeah, MPLS VPNs can be confusing.

Alishia 2 years ago

I'm not sure, but I think C) MP-BGP could also be a possible answer for this question.

Haydee 2 years ago

I agree with Micaela, VRF allows for separate routing tables for different customers.

Elinore 2 years ago

RD? Really? That's for uniquely identifying a VPN, not for handling overlapping IP spaces. These options are a bit of a mixed bag.

Janna 2 years ago

I was thinking MP-BGP might be the answer, since it's used to distribute VPN routing info. But VRF makes more sense for keeping those IP ranges separate.

Christene 1 year ago

↳ replying to Janna

Definitely, VRF is the Layer 3 VPN attribute that allows different customers to connect with overlapping IP ranges.

Maryln 1 year ago

↳ replying to Janna

MP-BGP is used for distributing VPN routing info, but VRF is what keeps the IP ranges separate.

Colton 1 year ago

↳ replying to Janna

Yeah, VRF is the way to go for different customers with overlapping IP ranges.

Kristin 2 years ago

↳ replying to Janna

I think VRF is the correct answer, it helps keep the IP ranges separate.

Vesta 2 years ago

VRF sounds like the right answer here - it allows each customer to have their own isolated routing table, even with overlapping IP ranges.

Micaela 2 years ago

I think the answer is A) VRF.

Cisco 300-410 Exam - Topic 12 Question 96 Discussion