Hello Nanog,
We are developing a streaming video based application. Can someone tell me
whether
(1) Multicasting is necessary for such an application
(2) How do we configure multicasting, and multicast (224.x.x.x) to Global IP
Conversion, on Cisco Routers. Some useful sites will be handy.
(3) What is the function of the MBone network, and whether it is required
for such a situation.
Deen
Sri Lanka Telecom
Internet
deen@slt.lk wrote:
Hello Nanog,
We are developing a streaming video based application. Can someone tell me
whether(1) Multicasting is necessary for such an application
(2) How do we configure multicasting, and multicast (224.x.x.x) to Global IP
Conversion, on Cisco Routers. Some useful sites will be handy.
(3) What is the function of the MBone network, and whether it is required
for such a situation.Deen
Sri Lanka Telecom
Internet
Hello;
The old MBone - the set of DVMRP domains connected by tunnels, is nearly
dead - it
shows up as AS10888.
The native multicast enabled mbone is called by some the MBone, but
this usage is not universal.
At any rate, from Sri Lanka you may have trouble getting a direct
connection to
the multicast enabled Internet. I recommend Sprint in general as the
most cluefull
of the large multicast providers. I do not know where or with whom you
peer, but possible "nearby" multicast service providers include
AS 2497 Internet Inititative Japan Inc.
AS 9270 Korea Telecom
AS 9589 UUNET Hong Kong Ltd.
I cannot speak as to their ability.
Also, Enron or Qwest might be able to help.
If you want to get up quickly, unless you directly peer with someone who
does multicast,
you will need a tunnel to someone who does. We could help you with that...
As Golding says, you will need to speak MSDP and MBGP, as well as
(strongly recommended)
PIM-SM and IGMP internally
Cisco documentation can be obtained from
ftp://ftpeng.cisco.com/ipmulticast.html and
http://www.ieng.com/warp/public/cc/techno/protocol/ipmu/tech/ipcas_dg.htm
Also, you should read the info in
http://www.live.com/mbone/ and
http://www.ietf.org/meetings/get-mbone.html
Further info is available from http://www.ipmulticast.com/ - you should
think about
joining the IP Multicast mailing list, which is more appropriate for multicast
questions than NANOG -
To subscribe to the IP Multicast mailing list, send an email message to listserv@stardust.com
Leave the subject blank, place the following line of text in the body:
subscribe ipmulticast <your full name>
Regards
Marshall Eubanks
Multicast Technologies, Inc.
10301 Democracy Lane, Suite 201
Fairfax, Virginia 22030
Phone : 703-293-9624 Fax : 703-293-9609
e-mail : tme@on-the-i.com http://www.on-the-i.com
Deen,
We are developing a streaming video based application. Can someone tell me
whether(1) Multicasting is necessary for such an application
(2) How do we configure multicasting, and multicast (224.x.x.x) to Global IP
Conversion, on Cisco Routers. Some useful sites will be handy.
(3) What is the function of the MBone network, and whether it is required
for such a situation.Deen
Sri Lanka Telecom
Internet
Sounds like a one-to-many application. And as such, I would ask
who are your anticipated receivers? Secondly, are those receivers
currently able to join multicast groups?
If your receiver population is not multicast enabled, then writing
a multicast application will be in vain unless you address the
extension of multicast to edge where your receivers reside.
-ron
Most of the larger ISPs out there have multicast available on
their network in various states of being supported. The advent of SSM
(single source multicast) makes such one-to-many much easier than
in the past.
You should be able to call your ISP and ask them if they support
multicast. If you want to check on them, and know their ASN you can
telnet to one of the route servers (route-views.oregon-ix.net is the
best for checking on multicast) and type "sh ip mbgp r _2914$" for example
to get an idea of if Verio is a multicast enabled network. The same
goes for many other providers.
Verio, Sprint, Qwest, Digex/Intermedia, AboveNet/MFN and
GlobalCenter all have multicast enabled networks and offer multicast
services to customers last I knew. I don't speak for any of them
so my information may be out of date...
- Jared
Jared,
Ron da Silva wrote:
Jared,
> Verio, Sprint, Qwest, Digex/Intermedia, AboveNet/MFN and
> GlobalCenter all have multicast enabled networks and offer multicast
> services to customers last I knew. I don't speak for any of them
> so my information may be out of date...Is the interesting receiver population the operators of these major
backbones and those of their (smaller?) customer networks? Regardless,
are the receivers that Deen desires to reach multicast enabled or not?
Who do you want to reach with this application?-ron
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ron da Silva ron@aol.net
Network Architect 703.265.4548
America Online, Inc.
From the sound of it, he wants to reach an academic audience,
which has a much higher chance of being multicast enabled.
FWIW, there are 321 autonomous systems on my current list of the
multicast enabled.
Regards
Marshall Eubanks
Multicast Technologies, Inc.
10301 Democracy Lane, Suite 201
Fairfax, Virginia 22030
Phone : 703-293-9624 Fax : 703-293-9609
e-mail : tme@on-the-i.com http://www.on-the-i.com