[afnog] Routing - Adding Bandwidth

[Mukom TAMON]

If you are running all Cisco gear, you might want to look at GLBP (Gateway
Load Balancing Procotol) ...it will spread all your users seamlessly accross
your multiple egress links and they don't have to terminate at same ISP. You
get load-balancing and redundancy with GLBP.




On Thu, Jan 7, 2010 at 11:37 PM, Mark Tinka <mtinka at globaltransit.net>wrote:

> On Friday 08 January 2010 02:07:33 am Benjamin Cobblah
> wrote:
>
> > The challenge is that i would like to bundle all the 12MB
> >  in one pipe so that at a given session i have 12 MB to
> >  distribute at will and also maintain my failover
> >  solution.
>
> You don't mention how the links are being delivered...
> Ethernet, PPP, e.t.c., nor what platforms you're using.
>
> What you need is load balancing, but there are 2 layers and
> 3 issues to consider:
>
>        * At Layer 2; if Ethernet, doubtful 802.1AX (Ethernet) or
>          ML-PPP would be useful since these are separate ISP's.
>
>        * At Layer 3; if each of the ISP's are assigning you
>          addresses from their own allocations, directly putting
>          traffic on each link simultaneously won't be straight
>          forward. You could do it by placing different internal
>          devices on the different IP addresses, but I'm guessing
>          the bulk of your (inbound) traffic will be user-based web
>          browsing or the like.
>
>        * The third issue is if you're using NAT. Multi-homing with
>          NAT is fairly doable. Multi-homing + load balancing with
>          NAT, a little more interesting :-). Cisco have a feature
>          called OER (Optimized Edge Routing), you could take a
>          look at it and see if it's close to what you need
>          (assuming you have NAT):
>
>
> http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a00808d2b72.shtml
>
> The easiest solution would be for your to run BGP with your
> ISP's. This works best when you have your own address space
> and ASN allocations from AfriNIC (in case you don't
> already). But this depends on a number of things, one of
> which is whether your ISP's support BGP for customers, and
> if so, whether they'll run it with you, among other issues.
>
> More information about your setup, ISP environment, AfriNIC
> allocation status (if any), e.t.c., would be helpful.
>
> Cheers,
>
> Mark.
>
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