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North American Network Operators Group

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Re: Nanog list uncharacteristically quiet?

  • From: Chris Caputo
  • Date: Sun Dec 15 14:18:52 1996

Sounds like this would make everything be symmetrically routed.  Has
anyone researched whether this can scale?  Will you handle the case where
the interface a flow uses changes during the course of the flow?  I assume
this will lead to "round robin default" until an inbound packet for the
flow is received from a new interface.  Will the "round robin default" 
favor uncongested or highest speed links? 

I can't wait to hear the results of doing this!

Chris

On Sun, 15 Dec 1996, Paul A Vixie wrote:
> not so.  right now our multihomed web gateways need a full routing table.
> that's pretty complicated, for my operator and for my customer's providers.
> we're shortly moving to an "interface default" such that all inbound streams
> will have their outbound route chosen as the incoming interface's default,
> and all outbound streams will get a "round robin default" outbound route
> that will then be rebound to the SYN-ACK's incoming route, in case the
> original source route is better-reachable by "this" destination via some
> other interface, a not uncommon case these days.
> 
> this adds about 2 pages of code to the kernel.  but it's a lot less complex
> than taking a full routing table from multiple providers.
> 

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