It's inbound i'm mostly concerned with. I'm taking full routes from both providers. Paths to both a relatively equal, so the path with the lowest ID is winning, causing it to be overloaded.
---- ---- ---- ---- Chris Gotstein, Sr Network Engineer, UP Logon/Computer Connection UP http://uplogon.com | +1 906 774 4847 | ch...@uplogon.com On 4/14/2010 4:43 PM, MrPaul wrote: > Are you wanting to load balance inbound, outbound, or both? > > Without knowing all the details the cleanest solution would be to split > your address space in half. Then send one half to provider A and the > other half to provider B. Also send the entire network block to both > provider A & B for backup purposes. The only issue here is you need to > hope that you have enough address space to support this. That way under > normal circumstances 1/2 your IP space will come in provider A while the > other half will come provider B. > > For outbound load balancing you'll probably need to take full routes and > then do something like prefer odd addresses out provider A and even out > provider B. You may find that taking full routes will balance enough. > Typical customers don't bother load balancing outbound traffic as there > isn't much. > > Paul > > On Wed, Apr 14, 2010 at 4:26 PM, Chris Gotstein <ch...@uplogon.com > <mailto:ch...@uplogon.com>> wrote: > > Does this seem like a valid way to load balance? > > http://ccnalab.net/bgp-routing/bgp-load-sharing-2-isp/ > > ---- ---- ---- ---- > Chris Gotstein, Sr Network Engineer, UP Logon/Computer Connection UP > http://uplogon.com | +1 906 774 4847 | ch...@uplogon.com > <mailto:ch...@uplogon.com> > > On 4/14/2010 4:23 PM, MrPaul wrote: > > On Wed, Apr 14, 2010 at 3:03 PM, Chris Gotstein <ch...@uplogon.com > <mailto:ch...@uplogon.com> > > <mailto:ch...@uplogon.com <mailto:ch...@uplogon.com>>> wrote: > > > > We are a multi-homed ISP with connections to 2 different > providers (AS > > Numbers) Does the bgp maximum-paths 2 command have any effect > on load > > balancing between the 2 connections since they are different > AS's or > > does that command only work when you have multiple paths to > the same AS? > > > > > > Taken from > > > > http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a00800945bf.shtml > > > > By default, BGP chooses one best path among the possible equal-cost > > paths that are learned from one AS. However, you can change the > maximum > > number of parallel equal-cost paths that are allowed. In order to make > > this change, include the maximum-paths paths command under the BGP > > configuration. Use a number between 1 and 6 for the paths argument. > > > > That feature is only of use if you are dual-homed to the same AS. > _______________________________________________ > cisco-nsp mailing list cisco-nsp@puck.nether.net > <mailto:cisco-nsp@puck.nether.net> > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/