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Company XYZ connects its sites over a private WAN. Their overlay network is running a DMVPN setup where the headquarters site is the hub. The company is planning on implementing multicast routing on the network. What should be used in the multicast routing design?
Suggested Answer: C
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25 comments · newest first
CA
Candra
6 months ago
A could work, but I worry about scalability.
BA
Basilia
6 months ago
C makes sense. Centralized RP reduces complexity.
BR
Brice
6 months ago
I prefer A. Dense mode seems simpler for our setup.
ST
Staci
6 months ago
I think C is the best choice. Hub control is key.
HA
Hayley
6 months ago
I thought dense mode was still a thing? Surprised to see it mentioned here.
MA
Marylou
7 months ago
Definitely PIM sparse mode, it’s more efficient for this setup.
BE
Beula
7 months ago
Wait, why would they use dense mode at all? Seems outdated.
MA
Marta
7 months ago
I disagree, RP at each site could be better for scalability.
RI
Rickie
7 months ago
PIM sparse mode with RP at the hub makes sense.
JA
Jannette
7 months ago
Haha, I almost picked A. Rookie mistake, everyone knows dense mode is for LANs, not WANs!
AS
Ashley
8 months ago
Hmm, I was thinking D might work, but C is probably the better option. Gotta love those trick questions!
FE
Felix
8 months ago
I agree, C is the way to go. Sparse mode with a centralized RP makes the most sense for a hub-and-spoke network.
ME
Merissa
8 months ago
C is the correct answer. PIM sparse mode with RP located at the hub is the best choice for this DMVPN setup.
AM
Amber
8 months ago
I vaguely recall that PIM dense mode is usually for smaller networks, so I’m not sure if that would apply here.
JE
Jeffrey
9 months ago
I’m leaning towards option C, but I’m a bit confused about the differences between dense and sparse modes in this context.
SA
Sanda
9 months ago
I think we practiced a question similar to this, and I feel like having the RP at the hub makes more sense for a centralized setup.
TH
Thomasena
9 months ago
I remember studying PIM sparse mode, but I'm not sure if the RP should be at the hub or remote sites.
AN
Angelyn
9 months ago
Option C looks good to me. Having the RP at the hub makes sense for a DMVPN network where the hub is the central point.
TE
Teri
9 months ago
I'm not too familiar with multicast routing, so I'll need to spend some time reviewing the options and thinking through the pros and cons of each approach.
TE
Tequila
10 months ago
PIM sparse mode with the RP at the hub seems like the logical choice given the DMVPN setup and the company's centralized network design.
TI
Tina
10 months ago
Hmm, I'm a bit confused on the differences between PIM dense mode and sparse mode. I'll need to review those concepts again before deciding.
NO
Noelia
10 months ago
I think PIM sparse mode with the RP located at the hub would be the best approach here. That way the hub can act as the central point for multicast routing.
SY
Sylvie
4 months ago
Plus, it optimizes bandwidth across the WAN.
SH
Shawnna
5 months ago
Centralizing the RP at the hub simplifies management.
BE
Bettina
6 months ago
I agree, PIM sparse mode with the RP at the hub makes sense.