I have just completed a new version of the ssmping looking glass - version 0.3. The main feature in this new version is added support for mcfirst - Stig’s tool for displaying packets received on a chosen multicast group and port. I have also added a ‘Raw Output’ mode that returns the raw output of the command executed.
The looking glass and its source code is available here: http://www.multicast.org.uk/lg/
The first public release of MAST was released today. MAST is a set of audio streaming tools using RTP over IPv4 and IPv6 multicast/unicast. Unlike VAT and RAT, which are designed primarily for audio conferencing, MAST is designed to be used for audio distribution and broadcasting. It is currently limited to receiving a single audio source, unlike RAT, which can mix serveral sources. It supports many of the audio payload types in the Audio-Visual Profile (RTP/AVP).
MAST is a re-write of pcm6cast, and now supports IPv4 as well as IPv6. Several new tools have been added, along with new codecs. There is now a dependency on the oRTP library, which is used to send and receive the RTP packets. RTCP is also now supported.
For more information visit the MAST Website.
I have just added a IPv6 Multicast Address Calculator to the musticast address tools section of this site.It prompts you for a multicast address type (transient, embedded RP, SSM), Scope and Group ID and it then calculates the full IPv6 multicast address for you.The tool is available here: http://www.multicast.org.uk/address-tools/
There have been a number of multicast beacons developed over the years; dbeacon is the latest offering.
dbeacon is a Multicast Beacon written in C++. The main purpose of a beacon is to monitor other beacon’s reachability and collect statistics such as loss, delay and jitter between beacons. dbeacon support both IPv4 and IPv6 multicast, collecting information using both Any Source Multicast (ASM) and Source-Specific Multicast (SSM).
The difference between dbeacon from many previous beasons is that it is a peer-to-peer system - each host running dbeacon is equal and there is no master server. Each host has the option of running the web frontend to monitor statistics. Unlike previous beacons, dbeacon does not send out pseudo RTP packets and instead uses its own protocol.
Homepage: fivebits.net/proj/dbeacon/
SSMping is an excellent tool for checking multicast connectivity. Pings are sent back from the server using both unicast and multicast, so also confirms that the remote host is alive.
ssmping is a tool for checking whether one can receive Source Specific Multicast from a given host. If a host runs ssmpingd, users on other hosts can use the ssmping client tool to test whether they can receive SSM from the host. Another tool called asmping is also provided to check whether can receive ASM.
Homepage: www.venaas.no/multicast/ssmping
The Net::RTP perl module comes with a number of tools to test RTP multicast streams:
Homepage: search.cpan.org/dist/Net-RTP/
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