Questions tagged [multicast]
For questions about multicast communications and protocols.
240 questions
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Network hardware requirements for mDNS [closed]
I have been trying to get mDNS discovery to work for devices connected to TP-Link TL-SG1005LP switch or Netgear GS105Ev2 with pretty much hit-or miss success. Unless I connect the network to a router ...
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Do switches try to keep track of Ethernet group membership?
I'm trying to better understand ethernet multicast support. My current understanding is that the I/G bit in the destination MAC address indicates whether the target recipient is an individual address ...
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Propagation of multicast frames used for networking protocols (e.g., stp, lldp)
I'm looking for proper resources on how frames with multicast destination mac addresses, specifically those used for networking protocols such as STP, are propagated within a layer 2 domain.
For ...
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Sflow on Nexus returning faulty interface values
Hello fellow networking folks,
I'm currently trying to build a small monitoring solution for multicasts. In our lab we have a Nexus9000 C93108TC-EX running version 7.0. I want to start with this ...
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How to setup a private network to avoid UDP drops
Related to this question and specifically the second answer, I have a followup question inspired by one comment there. It mentions that ”One is to design the network in such a way that you never have ...
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Receiving Unwanted Multicast Traffic With IGMP Snooping Running
With respect to IP Multicast having PIM sparse mode and IGMP snooping in place consider the scenario having 2 x routers connected to LAN switch. The multicast receivers are also connected to same LAN ...
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IPv6 neighbour discovery blocked by MLD snooping switch
I recently noticed that my IPv6 multicast traffic was being broadcasted to all hosts connected to a switch, even those that had not subscribed to the traffic.
To fix this, I enabled MLD snooping on ...
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Why isn't multicasting more popular?
Multicasting seems provide an efficient method of routing networking traffic from a source to multiple end users, especially at this moment in time with teleconferencing, streaming media, online ...
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How to forward UDP unicast messages to multiple destinations [closed]
I am trying to forward a UDP Unicast message so that it cant be received by multiple computers. Can anyone point me in the right direction for how to accomplish this?
Here are the details:
There are ...
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What does 'moving packets away from the source' in RPF means?
I recently started studying multicast and I am a bit confused by how reverse path forwarding is explained.
Most of the sources describe RPF as 'moving packets away from the source' but I understand ...
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Is multicast on the public internet possible? And if yes: How?
Is it possible to use multicast on the public internet? If yes: How? Are special IP addresses required and where do you get them from?
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Should (IPv6) multicast subscribers send report to query?
I am waking through RFC3810 and playing with MLDv2.
From that RFC I thought when anyone send query for group :: (all groups) and send it to address ff02::1 all subscribers on segment should send its ...
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What ways are there to make sure router multicast tables are up to date?
I've been reading on IGMP v3 and think I understand the basics of how to join a multicast group - sending a Membership Report Message.
But I'm not sure what the "best" or even conventional (...
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High latency - dense-sparse mode PIM
Colleagues, good day!
In my prod, I notice large delays to some switches behind which there are hosts with multicast reception
I wanted to know if my multicast is set up correctly, is it normal that ...
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What are the benefits and cons of IGMP snooping?
Our new router is asking if we want IGMP snooping enabled. Not being familiar with this, I looked to the internet and got the following wiki description:
IGMP snooping is the process of listening to ...
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