nanog mailing list archives
Re: Suspecious anycast prefixes
From: bmanning () vacation karoshi com
Date: Thu, 5 May 2011 18:34:10 +0000
On Thu, May 05, 2011 at 11:48:31AM -0500, Yaoqing(Joey) Liu wrote:
On Thu, May 5, 2011 at 8:10 AM, John Kristoff <jtk () cymru com> wrote:On Thu, 5 May 2011 11:54:17 +0300 Joe Abley <jabley () hopcount ca> wrote:Perhaps I'm misunderstanding the original question, but the assertion that anybody is hijacking that particular prefix seems false.Furthermore, that exchange prefixes may often appear to be anycast is not unusual. Those prefixes are often originated by multiple disparate networks who are connected to the exchange.You mean that many different exchange points are using the same set of prefixes as anycast service in different physical locations? That sounds interesting to me.
that has been a fairly common practice for nearly 15 years. /bill
Yaoqing In a lightning talk I didat NANOG 41, I talked about mapping peering relationships at exchanges. When I noted that these prefixes are often announced by exchange participants, Louie Lee explained that some of his participants often announce the space to their transit customers so that monitoring and troubleshooting tools don't cause confusion (e.g. traceroutes). John
Current thread:
- Re: Suspecious anycast prefixes, (continued)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 04)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 04)
- Re: Suspecious anycast prefixes Bill Woodcock (May 05)
- Re: Suspecious anycast prefixes Bill Woodcock (May 05)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 05)
- Re: Suspecious anycast prefixes bmanning (May 05)
- Re: Suspecious anycast prefixes Joe Abley (May 05)
- Re: Suspecious anycast prefixes John Kristoff (May 05)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 05)
- Re: Suspecious anycast prefixes John Kristoff (May 05)
- Re: Suspecious anycast prefixes bmanning (May 05)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 05)
- Re: Suspecious anycast prefixes bmanning (May 05)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 09)
- Re: Suspecious anycast prefixes Randy Bush (May 10)
- Re: Suspecious anycast prefixes bmanning (May 05)
- Re: Suspecious anycast prefixes David Miller (May 03)
- Re: Suspecious anycast prefixes Danny McPherson (May 05)
- Re: Suspecious anycast prefixes David Miller (May 05)
- Re: Suspecious anycast prefixes Danny McPherson (May 05)