Re: IPTV and ASM

2011-12-29 Thread Olivier Benghozi
> For example Apple products don't support IGMPv3. Implemented at last in 2011 (!) under OSX Lion, 10 years after Windows XP... $ sysctl net.inet.igmp.default_version net.inet.igmp.default_version: 3

Re: IPTV and ASM

2011-12-29 Thread Curtis, Bruce
On Dec 28, 2011, at 10:55 PM, Antonio Querubin wrote: > On Wed, 28 Dec 2011, Marshall Eubanks wrote: > >> From what I understand, the answer is likely to be "yes" and the >> reason is likely to be "deployed equipment only >> supports IGMP v2." > > That and numerous clients which don't know anyt

Re: IPTV and ASM

2011-12-29 Thread Mark Tinka
On Thursday, December 29, 2011 08:02:04 AM Keegan Holley wrote: > Isn't source discovery and efficiency a big concern for > ASM? If individual streams are tied to a specific > source then it's possible to live without some of the > overhead involved in ASM. Joins go straight to the > source, tr

Re: IPTV and ASM

2011-12-29 Thread Mark Tinka
On Thursday, December 29, 2011 12:55:31 PM Antonio Querubin wrote: > That and numerous clients which don't know anything about > SSM. With SSM Mapping, they don't need to. Mark. signature.asc Description: This is a digitally signed message part.

Re: IPTV and ASM

2011-12-29 Thread Mark Tinka
On Thursday, December 29, 2011 07:58:53 AM Glen Kent wrote: > SSM is also used since we *know* the IP addresses of the > content servers that are the sources - You dont need > ASM. I dont think maintaining RP infrastructure is > trivial. Who wants to deal with register packets, etc. > Small router

Re: IPTV and ASM

2011-12-29 Thread Mark Tinka
On Thursday, December 29, 2011 07:32:38 AM Jeff Tantsura wrote: > To my knowledge in most today's networks even if legacy > equipment don't support IGMPv3 most likely 1st hop > router does static translation and SSM upstream. Yes, SSM Mapping allows for PIM-SSM to be used in a network where the

Re: IPTV and ASM

2011-12-29 Thread Mark Tinka
On Thursday, December 29, 2011 06:19:14 AM Mike McBride wrote: > Agreed. I'm seeking confirmation, from IPTV implementers, > that non igmpv3 support is the reason for using ASM with > IPTV. Versus other reasons such as reducing state. Or is > this a non issue and everyone is using SSM with IPTV?

Re: IPTV and ASM

2011-12-29 Thread Mark Tinka
On Thursday, December 29, 2011 05:50:58 AM Marshall Eubanks wrote: > >From what I understand, the answer is likely to be "yes" > >and the > > reason is likely to be "deployed equipment only > supports IGMP v2." This is true for us - the broadcaster whose IPTv traffic we carry supports only IGM

Re: IPTV and ASM

2011-12-28 Thread Antonio Querubin
On Wed, 28 Dec 2011, Marshall Eubanks wrote: From what I understand, the answer is likely to be "yes" and the reason is likely to be "deployed equipment only supports IGMP v2." That and numerous clients which don't know anything about SSM. Antonio Querubin e-mail: t...@lavanauts.org xmpp: a

Re: IPTV and ASM

2011-12-28 Thread Keegan Holley
Isn't source discovery and efficiency a big concern for ASM? If individual streams are tied to a specific source then it's possible to live without some of the overhead involved in ASM. Joins go straight to the source, traffic is disseminated via direct paths instead of being replicated by the RP

Re: IPTV and ASM

2011-12-28 Thread Glen Kent
SSM is also used since we *know* the IP addresses of the content servers that are the sources - You dont need ASM. I dont think maintaining RP infrastructure is trivial. Who wants to deal with register packets, etc. Small routers punt all registers to CPU and them forward them in SW. In fact there

Re: IPTV and ASM

2011-12-28 Thread Jeff Tantsura
Mike, To my knowledge in most today's networks even if legacy equipment don't support IGMPv3 most likely 1st hop router does static translation and SSM upstream. The reason not to migrate to SSM is usually - ASM is already there and works just fine :) Cost to support RP infrastructure is usually

Re: IPTV and ASM

2011-12-28 Thread Mike McBride
Marshall, On Wed, Dec 28, 2011 at 1:50 PM, Marshall Eubanks wrote: > Dear Mike; > > On Wed, Dec 28, 2011 at 4:48 PM, Mike McBride wrote: >> Anyone using ASM (versus SSM) for IPTV? If so why? >> > > From what I understand, the answer is likely to be "yes" and the > reason is likely to be "deploye

Re: IPTV and ASM

2011-12-28 Thread Marshall Eubanks
Dear Mike; On Wed, Dec 28, 2011 at 4:48 PM, Mike McBride wrote: > Anyone using ASM (versus SSM) for IPTV? If so why? > >From what I understand, the answer is likely to be "yes" and the reason is likely to be "deployed equipment only supports IGMP v2." Regards Marshall > thanks, > mike >

IPTV and ASM

2011-12-28 Thread Mike McBride
Anyone using ASM (versus SSM) for IPTV? If so why? thanks, mike