nanog mailing list archives
Re: What's the point of prepend communities?
From: Job Snijders <job () ntt net>
Date: Thu, 26 Oct 2017 18:55:58 +0000
Hi, In context of traffic engineering it may be that Network A (customer of Network B) observes that performance is suboptimal between Network B and Network C. If Network B offers some kind of “Prepend to Network C” BGP community, network A will be able to utilize all of network B except the pieces that perform less well. (This is ofcourse assuming that Network C picks some alternative path because of the prepends) I think prepend communities are useful to empower customers to debug and perhaps even resolve issues without waiting for action from their supplier. Prepends are also slightly more graceful than “don’t export”, since if there are no alternative paths there still is _a_ path - and often any path is better than no path. Kind regards, Job
Current thread:
- What's the point of prepend communities? Jason Lixfeld (Oct 26)
- Re: What's the point of prepend communities? William Herrin (Oct 26)
- Re: What's the point of prepend communities? Jason Lixfeld (Oct 26)
- Re: What's the point of prepend communities? Christopher Morrow (Oct 26)
- Re: What's the point of prepend communities? Job Snijders (Oct 26)
- Re: What's the point of prepend communities? Jason Lixfeld (Oct 26)
- Re: What's the point of prepend communities? Rob Foehl (Oct 28)
- Re: What's the point of prepend communities? Jason Lixfeld (Oct 26)
- Re: What's the point of prepend communities? William Herrin (Oct 26)
- Re: What's the point of prepend communities? William Herrin (Oct 26)
- RE: What's the point of prepend communities? Naslund, Steve (Oct 26)
- Re: What's the point of prepend communities? William Herrin (Oct 26)
- Re: What's the point of prepend communities? Brett Frankenberger (Oct 26)
- Re: What's the point of prepend communities? Steve Dodd (Oct 28)
- Re: What's the point of prepend communities? Leo Bicknell (Oct 26)
- Re: What's the point of prepend communities? Clinton Work (Oct 26)
- RE: What's the point of prepend communities? Naslund, Steve (Oct 26)