Discuss HP HPE6-A78 Exam Topic 3 Question 81

You are deploying a new wireless solution with an Aruba Mobility Master (MM). Aruba Mobility Controllers (MCs), and campus APs (CAPs). The solution will include a WLAN that uses Tunnel for the forwarding mode and WPA3-Enterprise for the security option.

You have decided to assign the WLAN to VLAN 301, a new VLAN. A pair of core routing switches will act as the default router for wireless user traffic.

Which links need to carry VLAN 301?

Aonly links in the campus LAN to ensure seamless roaming

Bonly links between MC ports and the core routing switches

Conly links on the path between APs and the core routing switches

Donly links on the path between APs and the MC

Suggested Answer: B

In a wireless network deployment with Aruba Mobility Master (MM), Mobility Controllers (MCs), and Campus APs (CAPs), where a WLAN is configured to use Tunnel mode for forwarding, the user traffic is tunneled from the APs to the MCs. VLAN 301, which is assigned to the WLAN, must be present on the links from the MCs to the core routing switches because these switches act as the default router for the wireless user traffic. It is not necessary for the VLAN to be present on all campus LAN links or AP links, only between the MCs and the core routing switches where the routing for VLAN 301 will occur.

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26 comments · newest first

Lisbeth 10 months ago

Definitely need it on the links to the MC too!

Tamala 10 months ago

I think it's just the links between APs and core switches, right?

Ena 11 months ago

Wait, are we sure about VLAN 301 only needing to go to the MC? Sounds off.

Cassie 11 months ago

Totally agree, seamless roaming is key!

Renay 11 months ago

VLAN 301 needs to be on all links from APs to MCs and core switches.

Ciara 11 months ago

I vaguely remember something about seamless roaming needing VLANs on all links in the campus LAN. Could option A be the answer here?

Celeste 12 months ago

I feel like the links between the MC and the core switches are crucial, but I can't recall if they need to carry VLAN 301 as well. Maybe option B is right?

Louann 12 months ago

I think we practiced a similar question where we had to consider all links involved in the traffic path. I might lean towards option C since it mentions the path from APs to the core switches.

Audry 12 months ago

I remember that VLANs need to be configured on all relevant links, but I'm not sure if it's just between the APs and the core switches or if it includes the MC too.

Domitila 1 year ago

Hmm, I'm a bit confused. Is it just the links between the APs and the Mobility Controllers, or do the links between the Mobility Controllers and the core routing switches also need to carry VLAN 301?

Dahlia 1 year ago

I think the key here is that the wireless traffic is being forwarded using the Tunnel mode, so the VLAN 301 needs to be carried on the links between the Mobility Controllers and the core routing switches.

Jina 1 year ago

Okay, let me think this through step-by-step. The wireless traffic is being tunneled, so the VLAN 301 needs to be carried on the links between the APs and the Mobility Controllers.

Ora 1 year ago

This question seems straightforward, but I want to make sure I understand the topology correctly before answering.

Lorrine 1 year ago

I'm not sure, but I think both C) and D) could be correct depending on the network setup.

Virgie 1 year ago

Haha, I bet the person who wrote this question has been in one too many wireless troubleshooting sessions. Gotta love those tricky VLAN questions!

Asha 1 year ago

I think the correct answer is C. Keeps things simple and focused on the critical path for the wireless traffic.

Katie 1 year ago

Wait, why would we only need to carry VLAN 301 on the links between the MCs and the core switches? That doesn't make much sense to me.

Cheryl 1 year ago

↳ replying to Katie

A) only links in the campus LAN to ensure seamless roaming

Tyisha 1 year ago

I disagree, I believe the correct answer is D) only links on the path between APs and the MC.

Vicente 1 year ago

I think the answer is C) only links on the path between APs and the core routing switches.

Lelia 1 year ago

Aha, option C is the way to go! Streamlining the path between the APs and the core switches is key for this wireless setup.

Selma 1 year ago

Hmm, looks like we need to carry VLAN 301 on all the links in the path from the APs to the core routing switches. Gotta keep that wireless traffic flowing smoothly!

Herminia 1 year ago

↳ replying to Selma

B) only links between MC ports and the core routing switches

Gracia 1 year ago

↳ replying to Selma

A) only links in the campus LAN to ensure seamless roaming

Wendell 1 year ago

↳ replying to Selma

B) only links between MC ports and the core routing switches

Lavonda 1 year ago

↳ replying to Selma

A) only links in the campus LAN to ensure seamless roaming

HPE6-A78 Exam - Topic 3 Question 81 Discussion