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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. ...

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How can I block mDNS announcements only?

Is there a way to set up an ACL to block mDNS announcements only. We'd like to still allow the queries coming from remote devices, so completely blocking inbound UDP5353 isn't quite right. Thanks!
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Multicast Routing table configuration

I have two ethernet ports: From eth0 I receive live UDP data and from eth1 I send stream to UDP. All thing works good but problem is each time that before sending or receiving data I have to add ...
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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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161 views

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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142 views

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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Beacon interval low power mode

I am creating a UDP multicast net using Ubiquiti Rocket M2. None of the hardware receivers (ESP 8266) are on lower power mode. The only (possibly) low power device that is connected to the AP is my ...
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725 views

Why does router send packets to the multicast address?

I have a computer running linux and it has ufw activated with a couple of simple rules set. It is connected to ASUS 4G-N12 router by wifi. When I looked in ufw logs a few days ago it turned out that ...

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