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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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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2
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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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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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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 ...
- 1,182
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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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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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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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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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Can ELI/AAI/SAI addresses be Multicast?
In a slideshow by IEEE regarding the Structured Local Address Plan (SLAP), I saw the following table:
SLAP local identifier
SLAP Quadrant
Z bit
Y bit
X bit
M bit
second hex digit
ELI
01
1
0
1
0
A
SAI
...
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Should a multicast router punt the multicast packets in addition to routing those packets if the router has an interface in this multicast group?
If the multicast router has the (S,G) route present and the same destination address G is also set on one of the router interfaces, then should the router send the packets addressed to group address G ...
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Why does a PIM DM assert loser reply with a prune?
In PIM Dense Mode, why does an Assert loser send a Prune message to the winner? What is the actual motivation for this?
- 435
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What are the triggers for PIM-DM prune and assert messages?
There are articles explaining the PIM-DM mechanics, and they only confused me. Considering the most common topology, that of three routers, connected to each other like a triangle as such:
R1 -- R2
\ ...
- 435
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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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How does a PIM router know which neighbour is the upstream router?
I understand that certain PIM messages such as Join/Prune and Graft have a field called 'Upstream Neighbour Address' used to indicate the recipient of the message, which is the upstream router for a ...
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