nanog mailing list archives
Re: Internet vulnerabilities
From: "Marshall Eubanks" <tme () multicasttech com>
Date: Fri, 05 Jul 2002 09:05:44 -0400
On Fri, 5 Jul 2002 13:36:49 +0100 (BST) "Stephen J. Wilcox" <steve () opaltelecom co uk> wrote:
Doesnt announcing the same routing prefix into BGP from multiple locations do the same thing without needing a new range or enhancement in IGMP etc ? We do this in IGP currently.. Steve
As I see it, the problems with doing this in BGP are - it's static - no failover. If AS 701 and AS 1239 are both announcing a route to foo, and your preferred route is "through" AS701, and the AS701 foo goes down, then you do not automatically switch over to the AS1239 foo, even if you could reach it. - there is no way to have multiple anycast addresses within an AS - load balancing is tough These may all be solved, though... it's hard to tell without a protocol description. Regards Marshall Eubanks
On Fri, 5 Jul 2002, Barry Raveendran Greene wrote:FYI - for those scratching their heads on "anycast" ..... I just pushed out a paper on anycast by Chris Metz. Good foundation material. http://www.cisco.com/public/cons/isp/essentials/ip-anycast-cmetz-03.pdf-----Original Message----- From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On Behalf Of Bill Woodcock Sent: Friday, July 05, 2002 4:56 AM To: Marshall Eubanks Cc: nanog () merit edu Subject: Re: Internet vulnerabilities > But the only IPv4 anycast > that I know of does use MSDP : > http://www.ietf.org/internet-drafts/draft-ietf-mboned-anycast-rp-08.txt > Is there a different proposal ? What's the RFC / I-D name ? You seem to be confusing anycast with something complicated. It's not a protocol, it's a method of assigning and routing addresses. -Bill
Current thread:
- Re: Internet vulnerabilities, (continued)
- Re: Internet vulnerabilities David Lesher (Jul 04)
- Re: Internet vulnerabilities Paul Vixie (Jul 04)
- Re: Internet vulnerabilities Marshall Eubanks (Jul 04)
- Re: Internet vulnerabilities Paul Vixie (Jul 04)
- Re: Internet vulnerabilities E.B. Dreger (Jul 04)
- Re: Internet vulnerabilities Bill Woodcock (Jul 04)
- Re: Internet vulnerabilities Marshall Eubanks (Jul 05)
- Re: Internet vulnerabilities Bill Woodcock (Jul 05)
- RE: Internet vulnerabilities Barry Raveendran Greene (Jul 05)
- RE: Internet vulnerabilities Stephen J. Wilcox (Jul 05)
- Re: Internet vulnerabilities Marshall Eubanks (Jul 05)
- Re: Internet vulnerabilities Stephen J. Wilcox (Jul 05)
- Re: Internet vulnerabilities Lars Erik Gullerud (Jul 05)
- anycast DNS (Re: Internet vulnerabilities) E.B. Dreger (Jul 05)
- Re: Internet vulnerabilities Rodney Joffe (Jul 05)
- Re: Internet vulnerabilities Marshall Eubanks (Jul 05)
- anycast (Re: Internet vulnerabilities) E.B. Dreger (Jul 05)
- Re: Internet vulnerabilities Bill Woodcock (Jul 05)
- Re: Internet vulnerabilities Rodney Joffe (Jul 05)
- Re: Internet vulnerabilities Stephen Griffin (Jul 07)
- WorldComm Fiber Cut???? Gerardo A. Gregory (Jul 07)