Hi, Good point on the number of addresses required for STBs. In a common and well deployed approach to deploying multiplay solutions (ie. video and other stuff), a single public address is required at the residential gateway. It is perfectly sane to use 0.0.0.0 or some other unique address to receive the multicast traffic (video). A residential gateway that is performing IGMP proxy / snooping will have the capability to send it's IGMP joins out the IPoE or IPoA interface and it does not need a valid routable address for this traffic. Since the RG is performing IGMP proxy, it is possible to deploy multiple STBs within a household that all have private addresses. best regards, truman On 29/11/2006, at 12:07 PM, Scott Weeks wrote:
: The past 10+ years of work on IPv6 nee IPng have taught : many lessons about what will and will not work (and more : importantly what will be accepted or not).
Exactly. I NEED to multihome. I won't accept not being able to do that. No provider is going to be good enough that I trust ALL of my connectivity with them and no one else. That settles it right there. A protocol should not dictate my business practice.
: ps - the 100-million number likely came from Alain Durand's : presentation "Managing 100+ Million IP Addresses"
WRT "Managing 100+ Million IP Addresses", I see the following chart. (apologies for the formatting. It's on page 6 at www.nanog.org/mtg-0606/pdf/alain-durand.pdf
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Triple Play Effect on the Use of IP Addresses 2005 2006+ HSD only Triple Play
Cable Modem 1(private only) 1 Home Computer/Router 1 1 eMTA (Voice adaptor) 0 1 – 2 Set Top Box (STB) 0 2 Total number of IP addresses(assume 2.5 1 – 2 8 – 9 STB per household)
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
What STB needs 2 IPs per box? The way we're doing it is one private IP per STB and one STB per television set, so that's 2-3 private IPs per household. One public IP per customer for Internet and we're not going for VoIP until later. Perhaps they have one STB per household no matter the number of television sets? Also, I see they have 20-30 ASNs. Are all 20M customers going to be in one AS? I wouldn't expect that.
Finally, with VPRNs addresses could be reused. Just put the customers in different VPRNs and duplicate the address scheme. It's 'divide and conquer' methodology. I'm a noobie to VPRNs, so flame me if this isn't feasible. I have doused my flameproof underpants with beer, so I'm protected... :-)
scott