RE: CIDR,Sprint and the Big Guys.
From: Jim Fleming <JimFleming@unety.net> To: "'Christian Nielsen'" <cnielsen@vii.com>, "nanog@merit.edu" Subject: RE: CIDR,Sprint and the Big Guys. Date: Fri, 5 Apr 1996 01:29:10 -0600 [...] Yes CIDR is a good thing...unfortunately, it does not guarantee that the net will grow and aggregate in a rational way. When coupled with the "slow start" ISP policy, CIDR helps to rapidly fragment the IP address space and in some cases causes poor IP address utilization all in the name of "protecting the future of the Internet" or maybe "protecting the Internet from ISPs". [...]
It would appear that there may also be a strong argument that the tremendous proliferation of [small] ISPs is a significant contributor to the growth of the size of the Internet routing tables. Perhaps, the [anticipated] consolidation of ISPs will be a significant event in the efforts to control routing table size. -tjs
From: Jim Fleming <JimFleming@unety.net> To: "'Christian Nielsen'" <cnielsen@vii.com>, "nanog@merit.edu" Subject: RE: CIDR,Sprint and the Big Guys. Date: Fri, 5 Apr 1996 01:29:10 -0600 [...] Yes CIDR is a good thing...unfortunately, it does not guarantee that the net will grow and aggregate in a rational way. When coupled with the "slow start" ISP policy, CIDR helps to rapidly fragment the IP address space and in some cases causes poor IP address utilization all in the name of "protecting the future of the Internet" or maybe "protecting the Internet from ISPs". [...]
It would appear that there may also be a strong argument that the tremendous proliferation of [small] ISPs is a significant contributor to the growth of the size of the Internet routing tables.
Perhaps, the [anticipated] consolidation of ISPs will be a significant event in the efforts to control routing table size.
-tjs
Not unless they happen to have contiguous address space. Seriously, almost every small ISP that I know of gets addresses from its upstream provider(s). Therefore, unless they're dual-homed, they don't contribute to the growth of the size of the tables. Yes, they may sign up people with IPs in the swamp and route for them, but so may any other ISP/NSP. I can't imagine that there are more than 300 local and regional ISPs that receive address space from the NIC directly. I could be wrong, of course... Avi
On Fri, 5 Apr 1996, Tim Salo wrote:
It would appear that there may also be a strong argument that the tremendous proliferation of [small] ISPs is a significant contributor to the growth of the size of the Internet routing tables.
Perhaps, the [anticipated] consolidation of ISPs will be a significant event in the efforts to control routing table size.
There are other analysts (myself among them) who anticipate the number of North Amercan ISP's to grow by a third this year from around 2,000 to around 3,000. Yes, there is some consolidation, but this is very little in relation to the entry of new ISP's into the market. As long as the Internet is growing exponentially, there will be room for new entrants and we will not be seeing an absolute decline in the number of ISP's. Think exponentially, plan accordingly ;-) In other words, CIDR, PIER, and RFC1918.... Michael Dillon Voice: +1-604-546-8022 Memra Software Inc. Fax: +1-604-546-3049 http://www.memra.com E-mail: michael@memra.com
participants (3)
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Avi Freedman -
Michael Dillon -
salo＠msc.edu