CCNA multicast quiz question: How will multicast traffic flow in the network? CCNA | CCNP

Can you answer this CCNA quiz question? What will happen to the multicast frames in this network? This is one of my daily quiz question scenarios. In this video, I give you the answer and explain the solution.
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Question overview: 0:09
GNS3 Topology overview 1:46
Why routers as PCs: 2:20
Disable IGMP on switch: 2:49
Demo of multicast subscription: 3:36
Answer to question using Wireshark: 6:57
Who will reply to Multicast (igmp join): 10:58
IGMP snooping: 14:52
Cisco Multicast troubleshooting: 16:47:
Cisco document: Multicast Does Not Work in the Same VLAN in Catalyst Switches
bit.ly/2T4dyPj
#CCNA #GNS3 #Multicast

[@Authentic_Confidence]

This video was fantastic! please keep creating more videos demonstrating multicast across the network, we need more of this subject fully explained in networking

[@naingaung7827]

very informative your explanation. Thanks, Mr.David.

[@Peterstevoli]

Great video. Thank you David. Have a blessed day.

[@shakirbukhari]

very nice. learned more about multicast and how to join them. thanks

[@G0nz0uk]

Great work David, loving your GNS3 videos I bought on Udemy, CCNP expires soon so need to run through my labs.

[@mohammadhesni139]

Dear David, Thanks so Much it's awesome Like always

[@briangallaghgmailcom]

Nice explanation David 👍

[@branmeize]

Grateful for the explanation.

[@vmanyu86]

Packet goes to PC4 after enabling IGMP is most likely because if you see at 15:47, multicast router learning mode is set to pim-dvmrp which is dense mode and works by flooding packets from source to all possible destn and then building a tree based on membership by pruning branches. If you intend to see working as you said, routing protocol should be sparse mode like PIM-SM.

[@silviomhula5837]

Always making it simple

[@mathqesystem]

great video!

[@rkmallesh5]

Thanks Allot sir 👍

[@allenxd]

Hi David! This one really helped me as I have been working in an AV company which uses multicast alot! Can you do PIM too? again thank you very much!

[@davidbombal]

Menu: Question overview: 0:09 GNS3 Topology overview 1:46 Why routers as PCs: 2:20 Disable IGMP on switch: 2:49 Demo of multicast subscription: 3:36 Answer to question using Wireshark: 6:57 Who will reply to Multicast (igmp join): 10:58 IGMP snooping: 14:52 Cisco Multicast troubleshooting: 16:47: Cisco document: Multicast Does Not Work in the Same VLAN in Catalyst Switches bit.ly/2T4dyPj Follow me on Twitter or LinkedIn if you want to receive daily quiz questions: Twitter: twitter.com/davidbombal LinkedIn: www.linkedin.com/in/davidbombal/

[@ajuamungumichael4377]

thank you

[@john_doe6731]

Hey greate vidoes you pump out for our cheap asses viewing pleassure. A quick question, does the new changes to the CCNA with python and what not make the 2016 revision of 200-125 pointless in picking up ? Looking at getting my CCNA done this time arround. And the Cisco CCNA Cyber Ops seems pretty familiar as the comptia Sec+ and Cysa, any point in taking them for some one how allready got the sec+ ? Currently working on imporving my "position" within the security field, so just want to start getting my certifications to have something to show for my effort :)

[@nishigrandhi3653]

Hi David excellent tutorial I have one question though how does the switch know about the Mac address of the multicast ip address?

[@davidbombal]

The PC converts the IP address to a specific MAC address (based on the multicast address used). A Layer 2 switch will flood multicast frames. A switch using IGMP snooping will "snoop" or listen in on the IGMP messages sent by subscribers to know where to forward traffic.

[@Douglas_Gillette]

The pc encapsulates the ip packet with a specific mac frame.***

[@Douglas_Gillette]

The term convert sound like something NAT translation would do and is not the most appropriate term.

[@elchinefa9524]

Excellent tutorial. Thanks for that. Really appreciate it. By the way, I did research about "how to assign multicast ip in windows?" and as I understood if we want to have unicast Ip address and multicast ip address in the same device then we need two NIC. Is it true???

[@davidbombal]

No. Only a single NIC is required to receive unicast, multicast and broadcast frames.

[@elikelik3574]

@@davidbombalI guess we do assign second IP address(in this case multicast ip) from advanced settings. Should try it.Thanks for the reply.

[@davidbombal]

You don't have to assign multicast addresses to PCs. Applications like VLC are used and the NIC on the PC will start receiving multicast frames automatically.

[@elikelik3574]

@@davidbombal I see. So APPs do it themselves if they need it. I just for testing purposes wanted try to give multicast ip to some PCs in PacketTracer and see what happens. Thanks for explanation. Appreciate it.

[@qaisalbaghdady1243]

Like 👍 Like 👍🏽 Like 👍🏾

[@Bshawara]

help me please