Questions tagged [multicast]
In computer networking, multicast is the delivery of a message or information to a group of destination computers simultaneously in a single transmission from the source. Copies are automatically created in other network elements, such as routers, but only when the topology of the network requires it.
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Linux Kernel not passing through multicast UDP packets
Recently I've set up a new Ubuntu Server 10.04 and noticed my UDP server is no longer able
to see any multicast data sent to the interface, even after joining the multicast group. I've got the exact ...
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What is the difference between unicast, anycast, broadcast and multicast traffic?
I have never had the privilege of working in an environment that required complicated routing or if it did require it, it was handled upstream of me. I've always used very simple static routing ...
user62491
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Use ip route add to add multicast routes to multiple interfaces
TLDR: Is there a way to use "ip route" to add multicast routes for multiple NICs?
We have software that uses two multicast groups to communicate with two different groups of devices on two separate ...
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How do I know if IP Multicasting is enabled on my network in Windows?
How do I know if IP Multicasting is enabled on my network?
It is same question as above but for windows.
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How managed switches handle Broadcast Multicast and Unicast?
Under typical scenarios, a network switch needs to handle broadcast, multicast and unicast messages at the same time.
I'd like to understand
On a typical managed switch (1Gb Ethernet/10Gb Ethernet), ...
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Multicast doesn't seem to be working on RHEL 5.5
I'm trying to install Oracle Grid Infrastructure on two machines. Their documentation states:
You must enable multicasting for the cluster on the IP address subnet ranges 224.0.0.0/24 and 230.0.1.0/...
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Multicast accross the subnets
My application sends some UDP packets on a multicast address.
In our office we have 3 subnets connected via routers.
Sitting in my subnet I'm able to ping the IP of the other subnet.
Will multicast ...
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Is IPv6 multicast routable over the Internet?
As I understand it, public IPv6 addresses allocated by the IANA will have the prefix 2000::/3. These IP addresses will be routable through the Internet.
IPv6 multicast addresses on the other side are ...
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Multicast File Transfers
I'm looking for some multicast file transfer software. Do you have any suggestions? Must be "quickly implementable", i.e. no Tivoli or other stuff that requires a massive infrastructure. Must run on ...
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Stateful matching of multicast responses in iptables
A central part of my firewall configuration is:
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
It seems that RELATED does not work for multicast responses: when the host sends to a ...
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Can I test broadcast packets on a single machine?
I want to have a server sending broadcast UDP packets and two other clients, in the same machine, receiving them. Can I do that somehow? What IP address would I use?
@gravyface gave me hope but I ...
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Should IGMP Snooping be configured on all Layer 2 switches on LAN?
We've used Multicasting for the first time in one of our applications and whilst I have got it working, I'd really like to fully understand how it works and what's going on behind the scenes.
In an ...
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Multicasting (mDNS) for Linux Server
Background:
I am running a Linux sever on a local network that acts as both a web server and a central communications server. This server communicates with multiple nodes in the system. Upon node ...
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Server Unresponsive with Spike in Multicast Packets Received
I got a server from UbiquityServers about a week ago, I installed a simple Apache server and it just serves up images. The server is under very little load because it simply is an origin server behind ...
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Why does multicasting make the WAN inaccessible?
I'm hesitant to ask this question as I may not be able to perform the diagnostic steps to find out what is up, but:
I need to re-image a lab in a school, possibly during school hours. I am using a ...
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Multicast IP Addresses
I posted this on StackOverflow and was told it might be more appropriate here.
I'm having trouble understanding how multicast addresses work.
First off, is it true that if I have N clients or peers ...
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IGMP/Multicast routing in Linux
I need to route IGMP/Multicast traffic across two networks. I have a Linux box with two NICs, one public, one private. Need devices on the private network to flow to public. I'm pretty certain I ...
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How to make sysctl network bridge settings persist after a reboot?
I am setting up a notebook for software demo purpose. The machine has 8GB RAM, a Core i7 Intel CPU, a 128GB SSD, and runs Ubuntu 12.04 LTS 64bit. The notebook is used as a KVM host and runs a few KVM ...
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Why are my listener-less multicast packets affecting Wifi performance?
I've got a program that sends out a IPv6 multicast packet (to ff12::2:0:8afb:382b:c053:85f%en1) every 50ms. I've got it running on a very simple single-computer LAN (Mac mini <-wifi-> Linksys wifi ...
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How to setup a static multicast ARP entry with Cisco SG300?
We're running a Microsoft NLB cluster in multicast mode as a loadbalancer. Using our old Cisco IOS switches we propagate access to the cluster to our branches using a static ARP entry in the core ...
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How to share multicast traffic to many vlans
I have linux computer , this computer connected with entire my network via zyxel gs-2200.
In this zyxel also connected router with 500 vlans, one by client.
On linux computer i have vlc program ...
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Is there a way to add multicast to loopback interface on a kubernetes pod?
Using an in-prem kubernetes installation on baremetal (Ubuntu) servers, installed with kubeadm.
Kubernetes version is 1.25.3
Need to have multicast on a pod's loopback for the automated tests running, ...
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Multicasting for WDS
I want to install a Windows 7 image on 40-something computers without touching 'em
I have a WDS server, an image captured, and an answer file setup. I go to create a multicast transmission out of ...
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What affects multicast rates?
I'm experimenting the Trinity Rescue Kit (TRK) http://trinityhome.org/Home/index.php?wpid=1&front_id=12 and it's ability to clone hard disks to many computers at one time using multicast ...
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Create NSC-File for multicast streaming with Windows Media Streaming
For streaming multicast I need to create a NSC-file for the players - this file is pseudo-coded by Microsoft. Now I need to create this file for each proxy-publishingpoint. Is there any way to stream ...
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UPD Multicast (Class D) = How can this be routed over the internet?
is there a simple way (without setting up a local network via VPN) to route UPD Multicast Packets (224.0.0.0 to 239.255.255.255) from one server to another server (both residing in completely ...
jens