I think I may have gotten this working after all.  I added a second IP
address to the unix box and then split up the /22 range to 2 /23 ranges and
PAT'd that way.  I'm seeing the rxload & txloads leveling off now.  I'll
keep you posted.  Thanks for the input.

> Load sharing on incoming traffic can be difficult to achieve.  It's
> affected by many different factors, most of which are beyond your
> control.
>
> Would it be possible to see a sanitized version of your BGP-related
> config on that router?
>
> To figure out why incoming traffic is behaving the way it is, you need
> to take a good look at the BGP path selection process.  You might simply
> find that most of the people accessing your site are customers of one of
> your ISPs so that is the best path.  Or, your prefixes might be getting
> filtered in ways you wouldn't expect and that can affect incoming
> traffic flows.  Depending on the actual problem there are a couple of
> things you can do.
>
> If possible, please send your config so we can figure out the best way
> to alleviate the problem.
>
> John
>
> >>> "Bob Timmons"  1/23/02 12:26:00 PM >>>
> Hey all, got a question, but first, the situation...
>
> We've got 2 T1's in our NYC location that go to 2 different ISPs.
> We've
> moved these Ts off of their respective Cisco 2500's and onto a single
> Cisco
> 7206vxr.  This is now our 'outside internet' router.  The ethernet
> interface
> goes to the Checkpoint unix box and the other side of the unix box goes
> to
> the internal network.  The internal network is using a 10.x.x.x/22
> range
> (2000 addresses).  We'd like to perform some load-sharing using BGP.
> We've
> obtained an AS number and are getting full routes from both providers.
> Outbound BGP seems to work fine.  Depending on site, it takes
> differnet
> paths.  Inbound, however, is dominated by one T only.  We're using PAT
> at
> the firewall to perform address translation.  The firewall only has 1
> valid
> 'Internet' IP address.  It's my understanding that this is why all
> inbound
> traffic is using only 1 provider, as opposed to both.  I'd like to
> either
> have 2 valid internet IP addresses at the firewall (which I'm not sure
> is
> even possible) or perform the PAT at the router and maybe use
> access-lists
> to split up the traffic.  I guess the question is, what is the best
> practice
> when doing this?  I'm sure that we're not the only company that wants
> to do
> something like this.  Do either of my solutions sound feasible?
>
> thanks




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