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Questions tagged [multicast]

Multicast is the mechanism using which data traffic is reduced thoughout the network if a certain number of receivers are interested in the same data from the same source. This increases the efficiency of the network as less packets needs to be processed by the intermediate routers in the network. An inverted(spanning)tree like traffic path is formed for multicast data. This ensures that packets are replicated only when necessary.

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Wireless Ethernet Bridge blocking multicast in one direction: FreshTomato 2019.1.015-beta

(Originally posted on Reddit) https://www.reddit.com/r/TomatoFTW/comments/arq47e/wireless_ethernet_bridge_blocking_multicast_in/ I've installed FreshTomato 2019.1.015-beta on a DIR868L A1 (Broadcom ...
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iptables Multicast Traffic Dropped on WAN

For my home router, I am running a small Debian box which connects to my ISP via a separate modem using PPPoE. I have had some iptables rules in place for quite a while which: Allow all traffic on ...
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How to get a stream with ffmpeg through a specific eth(interface)

I have a server with 2 interfaces, eth0 and eth1. eth0 -> conected to Managment Switch eth1 -> conectated to Video Switch I would like to get a multicast with ffmpeg through eth1. Is there some ...
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Can anyone tell me the reason as to why Windows applications have to send data through Multicast 224.0.0.1 and etc?

So I have DNS Client, IGMP, and UPnP all disabled in Windows 8 yet Windows applications such as Chrome, GoogleUpdate, and Windows Activation executable still tries so hard to send outbound UDP frames ...
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IGMP and Wake On Lan

I have a Windows 10 server which has been operating well for some time using Wake On Lan. The Realtek adapter is set with Wake On Magic Packet enabled and Wake On Pattern Match disabled. Similarly, ...
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Windows 10 Mutlicast Routing with multiple Adapters

I have a Windows 10 System with 2 Network Adapters. Adapter 1 / IP 10.0.0.1 / 24 no def GW Adapter 2 / IP 192.168.0.1 / 24 def GW 192.168.0.254 Windows 10 Routes all Multicast Traffic to Adapter 1, ...
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Windows route selection and “route print -6” vs “netsh interface ipv6 show route”

So I'm using Windows 10 and I need to redirect some IPv6 multicast traffic to a specific interface (a USB-Ethernet adapter to be more specific). By default all multicast traffic is going to my WiFi ...
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IP TV (Multicast) not working on one PC

I can receive IP TV via Multicast using my ZyXEL ARMOR Z1 router. It works for my Surface Laptop and my mobile Device (LG G4) via WLAN without problems. With my Desktop PC it doesn't, neither using ...
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ffmpeg restreaming with an intermittent input

I have a live unicast stream that I restream as multicast. This works fine: ffmpeg -i <uri> -c:v copy -an -f rtp rtp://<multicast_ip>:<port> However, on occasion the input stream ...
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Does facebook multicast or unicast a live video? [closed]

I was wondering if Facebook uni-cast or multicast an ongoing live video streaming to a group of users. For example, if a user joins a live stream, will he/she get a separate uni-cast or multi-cast ...
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Routers block multicast request once node joins the same group

In the software I used, same "node" needs to join an IPv4 multicast group (to respond to the network protocol requests) but also needs to send requests to the same IPv4 multicast group (in order to ...
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Chromecast directly to specific IP Address

I've got a complicated network setup that involves multiple VLANS and subnets. The chromecast device is on a separate range to the laptops, however the two networks can communicate with each other ...
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if wireshark shows a layer 2 multicast packet on a WLAN should all connected clients receive it?

I have an Android device connected to a WLAN via a Cisco WAP121 access point. The android device runs an app that sends out an MDNS query for services. This all works fine for a while and then I stop ...
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Netgear X6S R7900P - Multicast

have a Netgear X6S R7900P set up as a Wireless AP which is connected to a Apple Airport Extreme. I ran into an issue where a multicast sent from one of the computers connected to the Apple Airport ...
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Why is my Mac persistently scanning multicast address?

I have a Linux machine with Psad installed. When I observe the log reports generated (admittedly I have Psad configured to be particularly sensitive), it lists a large number of scans originating ...

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