Re: BGP peering, 2 peers, hardware reqirements questions

2005-09-17 Thread Toni Mueller
Hi,

On Fri, 16.09.2005 at 14:49:18 +0100, tony sarendal [EMAIL PROTECTED] wrote:
 Your own as, two full bgp feeds and just let bgp decide path.
 Loadsharing is usually pretty good,

this depends *very*much* to whom you are connected, and how.

Please remember that one of the main points in BGP is not automatic,
but policy - not only your own, but that of other people on the 'Net
as well.


Best,
--Toni++



Re: BGP peering, 2 peers, hardware reqirements questions

2005-09-15 Thread j knight

Karl O. Pinc wrote:


I do recall some OpenBGP hooks into pf. Maybe there's
a way to use these to make failover work.



You need BGP pure and simple. The only caveat with BGP on OpenBSD is 
that you cannot do equal cost load balancing. For instance, if your 
providers send you a default route, you can only install 1 of those 
routes in the routing table (due to the current multipath route 
limitation in OpenBSD). All this means though is that all traffic being 
routed to the default route will use one pipe instead of both (i.e., one 
pipe will most likely be much less used than the other). For most people 
this is a non-issue.


The ins and outs of setting BGP up is beyond what can be described in 
this thread and that's why I recommended a good book right from the start :)




.joel



Re: BGP peering, 2 peers, hardware reqirements questions

2005-09-13 Thread Darrin Chandler
You might also want to read 
http://www.inetdaemon.com/columns/ask/internet-load-balancing.shtml, 
which will try to talk you out of using BGP for load balancing and 
present a simpler alternative.

j knight wrote:

--- Quoting Karl O. Pinc on 2005/09/13 at 01:05 +:

  

Finally, not knowing much about bgp, I've a question
about load balancing over the two WAN links.  Does
bgp/OpenBGP have any provisions for load balancing, say
based on WAN link latency?  (Seems like this _could_
be a bgp policy at the local level, but nothing
leaps out at me from bgpd.conf(5).)




Highly recommend this book: http://www.oreilly.com/catalog/bgp/



.joel



Re: BGP peering, 2 peers, hardware reqirements questions

2005-09-13 Thread j knight
--- Quoting Darrin Chandler on 2005/09/13 at 13:56 -0700:

 You might also want to read 
 http://www.inetdaemon.com/columns/ask/internet-load-balancing.shtml, 
 which will try to talk you out of using BGP for load balancing and 
 present a simpler alternative.


This solution talks about using dual static routes. This doesn't (yet)
work on OpenBSD as the support isn't there. Best bet if this track is
taken is to involve pf's load balancing features
(http://www.openbsd.org/faq/pf/pools.html and pf.conf(5)).




.joel