nanog mailing list archives
RE: Scalability issues in the Internet routing system
From: "Susan Hares" <skh () nexthop com>
Date: Wed, 19 Oct 2005 06:37:43 -0600
Elmer: You are not cooking for the routing table (hence loss of information). You are cooking for the forwarding entries in the line cards.. As to architectural discussion, I believe the IRTF is publishing work from On NG architecture. I'll be glad to send you pointers. 2 panels of routing experts suggested algorithms and changes. That will tell you some of the things that were thought of. Sue -----Original Message----- From: Elmar K. Bins [mailto:elmi () 4ever de] Sent: Wednesday, October 19, 2005 3:31 AM To: Susan Hares Cc: nanog () nanog org Subject: Re: Scalability issues in the Internet routing system Susasn,
Using the compression ("cooking") per router can provide one level of abstraction [reduction of prefix space] at router. So cooking down
your
Large number of routes to a "minimum" set of routes can provide some leverage against the prefix growth.
By cooking down the prefixes you unfortunately lose topology information which might be a bad thing, and at the same moment disrespect the site's wish to how it would like to be routed. Another bad thing, if you think of companies/sites paying for the entire network in the long run. Apart from that, IMHO cooking down the prefixes only buys time, but does not solve the problem. More people will multihome, and with the current mechanisms and routing cloud, they have to do it by injecting prefixes. I'm not sure whether this hasn't long become an architectural question and should be moved to the (new) IETF arch list. Opinions? Yours, Elmi. PS: Btw, anyone can give me a hint on where to discuss new ideas for e.g. routing schemes (and finding out whether it's an old idea)? -- "Begehe nur nicht den Fehler, Meinung durch Sachverstand zu substituieren." (PLemken, <bu6o7e$e6v0p$2 () ID-31 news uni-berlin de>) --------------------------------------------------------------[ ELMI-RIPE ]---
Current thread:
- Re: Scalability issues in the Internet routing system, (continued)
- Re: Scalability issues in the Internet routing system Andre Oppermann (Oct 19)
- Re: Scalability issues in the Internet routing system Paul Jakma (Oct 19)
- Re: Scalability issues in the Internet routing system Andre Oppermann (Oct 19)
- RE: Scalability issues in the Internet routing system Susan Hares (Oct 18)
- Re: Scalability issues in the Internet routing system Elmar K. Bins (Oct 19)
- Re: Scalability issues in the Internet routing system Andre Oppermann (Oct 19)
- Re: Scalability issues in the Internet routing system Elmar K. Bins (Oct 19)
- Re: Scalability issues in the Internet routing system Per Heldal (Oct 19)
- Re: Scalability issues in the Internet routing system Tony Li (Oct 19)
- Re: Scalability issues in the Internet routing system Elmar K. Bins (Oct 20)
- Re: Scalability issues in the Internet routing system Elmar K. Bins (Oct 19)