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2
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1answer
288 views

Linux ignoring multicast route over loopback

I'm trying to test some multicast code on a single machine. I'm trying to get the packets sent over the loopback device (lo) instead of the default eth1. Googling keeps turning up the incantation ...
1
vote
1answer
40 views

Multicast communication blocked?

I am struggling to create a multicast communication with basic client and server. So I looked on the web to find any working example... and they don't work. I mean the server is waiting for a ...
1
vote
1answer
942 views

Allow multicast packages from the bridge to wire in KVM

On a CentOS 6.5 host, I have a couple of guests - Ubuntu 12.04 and CentOS 6.5. The Ubuntu guest is generating mcast traffic that is visible via a tcpdump on the br3 interface. It is also visible on ...
1
vote
1answer
246 views

How to relay packet in a wireless ad hoc network?

I am trying to connect several Linux computers in wireless ad-hoc multicast : -computer C1 (192.168.1.3) -computer C2 (192.168.1.5) -computer C3 (192.168.1.6) C1 can not reach C3 On computer C1, ...
4
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0answers
6k views

Dumping multicast UDP stream with socat

I am setting up video streaming. In local network, there are two devices streaming video over UDP multicast. One is regular computer with Linux (streaming to 239.220.221.10, port 9200), second one is ...
2
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0answers
26 views

Multicasting with a Debian Router

I have a local network and I want to use NTP in multicast mode on this LAN. The first step to do this is to get multicast networking to work first. In the network I have 5 Debian machines all ...
2
votes
0answers
5k views

Creating multicast join for tcpdump captures

I want to write a linux shell script which will capture specific multicast traffic. Specific as in, I want to create a pcap file that has all the traffic for one specific multicast group/port. Here ...
2
votes
0answers
680 views

Enabling multicast communication between 2 AIX JVM processes

I'm having trouble with multicast distribution on a single AIX machine between two JVM processes. Think ehcache or jgroups. In order to enable on Mac OS X: route add -net 224.0.0.0 -interface lo0 ...
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0answers
28 views

Is there a way to set the default TTL for multicast packets?

This Question Provided some valuable insight on how to set the default TTL for IP packets on a system. I would like to do the same thing, but for multicast packets. I do not know if this is possible....
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0answers
27 views

Implications of increasing igmp_max_memberships

I am writing an application that will subscribe to 150+ multicast groups. It appears the linux default number of multicast subscriptions is 20 which can be increased via sysctl -w net.ipv4....
1
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0answers
154 views

VLC multicast input stream does not play video but plays audio

I m trying to play input multicast streaming on my fedora 21 OS PC with VLC player. By using below command vlc -vvv rtp://@239.192.xx.xx:52xxx from terminal, it launches VLC player and plays ...
1
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0answers
135 views

What is an IGMP querier?

I am looking at which multicast groups the linux kernel is subscribed at the moment. What do the values in the Querier column mean?
1
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0answers
165 views

How do you tweak iptables limit rules on openSUSE Tumbleweed?

I have a fresh install of openSUSE Tumbleweed, it is logging a lot firewall related stuff due to my apple devices multicasting to enable airplay. Lines look like: Mar 14 12:45:13 server kernel: SFW2-...
1
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0answers
79 views

How do I mcast multiple pcap files simultaneously with guaranteed ordering and controllable speed?

We capture many pcap files every day on many different multicast groups. For the purposes of testing & benchmarking, we wish to replay these files in an isolated environment and in a controlled ...
1
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0answers
624 views

AIX multihomed multicast

On my AIX machine if I run netstat -ia I get: Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll en0 1500 link#2 1e.18.1.1e.78.2 385229 0 1091655 0 0 ...
0
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0answers
113 views

ipsec-tools can't encrypt packets after changing destination ip address?

I established a tunnel IPsec connection between two networks like the following scenario IPsec-tools and racoon and it works fine (see image) But in gateway1 I run a simple program that listen to ...