RE: Just my ten pence..

["Ashok Rao" <rao@cidera.com>]

> -----Original Message-----
> From: owner-cdn@ops.ietf.org 
> [mailto:owner-cdn@ops.ietf.org]On Behalf Of
> D2
> Sent: Thursday, February 08, 2001 3:03 PM
> To: Cdn
> Subject: Just my ten pence..
> 
> 
> In fact IP Multicast would seem pretty complete as a solution 
> for Content
> Delivery Network already, which leaves me wondering why the ISPs and
> Backbone Providers don't pull their finger out and deploy 
> technology that
> works across the Internet rather than re-invent technology 
> which many top
> academics have been designing successfully for years.
> 
> Is it that the CDNs would rather pay for immense bandwidth 
> and then pay more
> for Unicast Patches all over the place. Does this create a 
> barrier to entry
> for smaller competing CPs with more compelling content?

IP Multicast is great for live streams - a major stumbling point
is that the networks traversed from source to destination need to
be multicast enabled and participate in the exchange of multicast
traffic. However, multicast is not the solution for delivery of
on-demand streams or for static (or dynamically generated ) web
content due to the personalized nature of the interaction. 

Ashok Rao
VP, Technology
Cidera, Inc.
The Internet Broadcast Backbone
Tel: 301-598-0500, x2377
Fax: 301-598-0837
www.cidera.com