nanog mailing list archives
Re: BGP failure analysis and recommendations
From: Brandon Ross <bross () pobox com>
Date: Thu, 24 Oct 2013 03:07:04 -0400 (EDT)
On Wed, 23 Oct 2013, Christopher Morrow wrote:
On Wed, Oct 23, 2013 at 10:40 PM, JRC NOC <nospam-nanog () jensenresearch com> wrote:Have we/they lost something important in the changeover to converged mutiprotocol networks? Is there a better way for us edge networks to achieve IP resiliency in the current environment?sadly I bet not, aside from active probing and disabling paths that are non-functional.
Um, how about, don't buy services from network providers that fail in this way?
Since we're not naming names, I won't, but in the past there's been at least one provider that used multi-hop eBGP at their edges because they didn't want to invest in edge gear that could handle a full BGP table. My concern with their network (beyond many other concerns) was that when that router in the middle had a soft failure, how would BGP know to route around it? Answer: it wouldn't, you'd black hole.
On the opposite side of the spectrum, there was at least one provider that used custom software to actively probe their upstream providers and route around poor performance. At one time, there was also software, hardware and services that you could install/run on your own network to try to detect these things as well, however I'm not sure how many of them are still on the market.
The bottom line, however, is don't buy services from companies that do a poor job of running their network unless you can accept these kinds of failures.
-- Brandon Ross Yahoo & AIM: BrandonNRoss +1-404-635-6667 ICQ: 2269442 Schedule a meeting: https://doodle.com/bross Skype: brandonross
Current thread:
- BGP failure analysis and recommendations JRC NOC (Oct 23)
- Re: BGP failure analysis and recommendations Christopher Morrow (Oct 23)
- Re: BGP failure analysis and recommendations Brandon Ross (Oct 24)
- Re: BGP failure analysis and recommendations Christopher Morrow (Oct 24)
- Re: BGP failure analysis and recommendations Brandon Ross (Oct 24)
- Re: BGP failure analysis and recommendations Brandon Ross (Oct 24)
- RE: BGP failure analysis and recommendations Sam Roche (Oct 24)
- Re: BGP failure analysis and recommendations Christopher Morrow (Oct 23)
- Re: BGP failure analysis and recommendations Pete Lumbis (Oct 25)
- <Possible follow-ups>
- Re: BGP failure analysis and recommendations Courtney Smith (Oct 24)
- Re: BGP failure analysis and recommendations Scott Weeks (Oct 24)