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Re: The 100 Gbit/s problem in your network
From: Saku Ytti <saku () ytti fi>
Date: Mon, 11 Feb 2013 14:23:16 +0200
On (2013-02-11 12:16 +0000), Aled Morris wrote:
I don't see why, as an ISP, I should carry multiple, identical, payload packets for the same content. I'm more than happy to replicate them closer to my subscribers on behalf of the content publishers. How we do this is the question, i.e. what form the "multi"-"casting" takes. It would be nice if we could take advantage of an inherent design of IP and the hardware it runs on, to duplicate the actual packets in-flow as near as is required to the destination. Installing L7 content delivery boxes or caches is OK, but doesn't seem as efficient as an overall technical solution.
As an overall technical solution Internet scale multicast simply does not work today. If it did work, then our next hurdle would be, how to get tier1 to play ball, they get money on bits transported, it's not in their best interested to reduce that amount. Now maybe, if we really did want, we could do some N:1 compression of IP traffic, where N is something like 3<10. Far worse than multicast, but with this method, we might be able to device technical solution where IP core does not learn replication states at all. We could abuse long IPv6 addresses DADDR + SADDR + extension header to pack information about destination ASN who should receive this group, this could be handled without states in HW in core networks, only at ASN edge, you'd need to add classic multicast state intelligence. -- ++ytti
Current thread:
- Re: The 100 Gbit/s problem in your network, (continued)
- Re: The 100 Gbit/s problem in your network fredrik danerklint (Feb 08)
- Re: The 100 Gbit/s problem in your network Jeroen Massar (Feb 08)
- Re: The 100 Gbit/s problem in your network fredrik danerklint (Feb 08)
- Re: The 100 Gbit/s problem in your network Jeroen Massar (Feb 08)
- Re: The 100 Gbit/s problem in your network fredrik danerklint (Feb 08)
- RE: The 100 Gbit/s problem in your network Adam Vitkovsky (Feb 08)
- Re: The 100 Gbit/s problem in your network Saku Ytti (Feb 08)
- Re: The 100 Gbit/s problem in your network joel jaeggli (Feb 08)
- RE: The 100 Gbit/s problem in your network Adam Vitkovsky (Feb 11)
- Re: The 100 Gbit/s problem in your network Aled Morris (Feb 11)
- Re: The 100 Gbit/s problem in your network Saku Ytti (Feb 11)
- Re: The 100 Gbit/s problem in your network ML (Feb 11)
- Re: The 100 Gbit/s problem in your network Mark Radabaugh (Feb 11)
- Re: The 100 Gbit/s problem in your network Stephen Sprunk (Feb 11)
- Re: The 100 Gbit/s problem in your network Scott Helms (Feb 11)
- Re: The 100 Gbit/s problem in your network Christopher Morrow (Feb 11)
- Re: The 100 Gbit/s problem in your network Scott Helms (Feb 11)
- Re: The 100 Gbit/s problem in your network Scott Helms (Feb 11)
- Re: The 100 Gbit/s problem in your network Jay Ashworth (Feb 11)
- Re: The 100 Gbit/s problem in your network Patrick W. Gilmore (Feb 11)
- Re: The 100 Gbit/s problem in your network Patrick W. Gilmore (Feb 11)