Tagged Questions
0
votes
1answer
41 views
Is multicast appropriate for sending a copy of a video chat to a server?
I am creating a p2p video chat app using the libjingle/WebRTC code. I would like to collect a copy of these video conversations on our server for users to watch later - but I don't want to suck up too ...
2
votes
2answers
96 views
Solaris doesn't know which MAC address to use to send an UDP multicast message
I have a pair of Solaris 10 boxes which are supposed to send multicast UDP packets to a group of hosts. One of them works just fine, whereas the other one does not.
The problem with the second ...
1
vote
1answer
157 views
Multicast in private LAN with different subnets
after i read
Multicast IP Addresses
and
Multicast accross the subnets
I am confused.
Configuration: I have two devices in the same network. They may not be in the same Subnet, but ...
2
votes
2answers
643 views
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 ...
2
votes
1answer
299 views
What is the difference between bind, network (interface) and multicast addresses?
The DatagramSocketImpl in Java has a joinGroup method that takes a socket address (IP and PORT) plus the interface address (IP and PORT). I am trying to understand the difference and purpose of each ...
1
vote
2answers
473 views
Troubleshooting UDP multicast on Windows
I'm a programmer, not a system adminstrator, so please forgive my administrative naivete. My software, written in C#, relies on UDP multicasting. One machine, the server, streams events to an known ...
5
votes
1answer
1k views
iperf max udp multicast performance peaking at 10Mbit/s?
I'm trying to test UDP multicast throughput via iperf but it seems like it's not sending more than 10Mbit/s from my dev machine:
C:\> iperf -c 224.0.166.111 -u -T 1 -t 100 -i 1 -b 1000000000
...
1
vote
0answers
1k views
UDP Multicast not working without promisc. Already tried rp_filter=0
I'm having issues with multicast traffic in Ubuntu Maverick. It only appears to work when the card is in promisc mode (i.e. if I set it manually, or use a tool such as tcpdump).
Adding multicast ...
4
votes
3answers
5k views
How can I test Multicast UDP connectivity between two servers?
I have a two servers on the same subnet. I have an application installed which uses Multicast UDP to propagate events between the servers and keep them in sync.
This does not seem to be happening, ...
2
votes
2answers
300 views
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 ...
10
votes
6answers
8k views
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 ...
10
votes
4answers
783 views
How common are dropped packets in communications within a data center?
Let's say I have 2 machines in the same data center but not necessarily in the same rack.
How common would dropped packets be when sent using UDP between these two machines?
I'm asking under the ...
0
votes
1answer
889 views
What are good host firewall rules to allow UDP multicast?
I have a system with a restrictive firewall that will be participating in UDP multicasting (sending and receiving). What's a good set of rules to make the host's firewall allow this?
This is my ...
0
votes
2answers
2k views
Using Clonezilla Server Edition with multiple multicast restore operations
I run a computer refurbishing operation for a local non-profit I am a part of. I have been looking into using Clonezilla to do network-based image-restoration. I am very interested in the multicast ...
