nanog mailing list archives
Re: Anycast 101
From: William Allen Simpson <wsimpson () greendragon com>
Date: Fri, 17 Dec 2004 10:56:18 -0500
Iljitsch van Beijnum wrote:
It doesn't really require that. Redundancy requires that the routers at the ends of two links both be different. Having one router at one end and two at the other is a good compromise in many situations.OK, now I'm sure you don't actually do any engineering.
In 25+ years, I've not found that router failure was a major or even interesting problem. Link failures are probably 80%. Upstream failures are probably another 5%, about the same as staff fumblefingers, power failures, and customer misconfiguration that somehow affects routing -- like the idiots with the 5 character password last week that got rooted and swamped their link so badly that BGP dropped. I've lived through "inverse multiplexing", and BONDING, etc, etc.... Sure, I've had routers that had to be rebooted every week to overcome a slow memory leak. But you're not fixing that.... A redundant router should be where it would be doing some good -- on a diverse link to another upstream. -- William Allen Simpson Key fingerprint = 17 40 5E 67 15 6F 31 26 DD 0D B9 9B 6A 15 2C 32
Current thread:
- Re: Anycast 101, (continued)
- Re: Anycast 101 Douglas K. Fischer (Dec 23)
- Re: Anycast 101 Suzanne Woolf (Dec 16)
- Re: Anycast 101 Alon Tirosh (Dec 16)
- Re: Anycast 101 Stephane Bortzmeyer (Dec 17)
- Re: Anycast 101 Steve Gibbard (Dec 16)
- Re: Anycast 101 Iljitsch van Beijnum (Dec 17)
- Re: Anycast 101 Michael . Dillon (Dec 17)
- Re: Anycast 101 Marshall Eubanks (Dec 17)
- Re: Anycast 101 William Allen Simpson (Dec 17)
- Re: Anycast 101 Iljitsch van Beijnum (Dec 17)
- Re: Anycast 101 William Allen Simpson (Dec 17)
- Re: Anycast 101 Steve Gibbard (Dec 17)
- Re: Anycast 101 Iljitsch van Beijnum (Dec 17)
- Re: Anycast 101 Iljitsch van Beijnum (Dec 17)
- Re: Anycast 101 Joe Abley (Dec 17)
- Re: Anycast 101 Joe Shen (Dec 20)
- Re: Anycast 101 Iljitsch van Beijnum (Dec 17)
- Re: Anycast 101 William Allen Simpson (Dec 17)
- Re: Anycast 101 Iljitsch van Beijnum (Dec 17)