From: CCIE Candidate (ccie2001ca@xxxxxxxx)
Date: Mon Oct 29 2001 - 12:47:00 GMT-3
Hi Albert:
I dont think it can be done without using BGP if you
are connecting to two different ISPs. Your customer
should have its own IP block and AS number, and then
BGP can be used to provide redundancy (as one ISP
won't advertise another IPS's IP block being
originated from its own AS).
I hope it helps
Cheers!
KJ
--- Albert Lu <albert_ccie@yahoo.com> wrote:
> KJ,
>
> I'm looking at doing something like this with a
> customer to connecto to 2
> ISPs for redundancy purposes. Would I need a
> separate AS number for the
> customer with an individual IP address range. Or is
> there a way to do it
> without using BGP?
>
> Thanks
>
> Albert
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com]On Behalf Of
> CCIE Candidate
> Sent: Sunday, October 28, 2001 5:26 AM
> To: John Elias; ccielab@groupstudy.com
> Subject: Re: Load Balancing for Incoming Traffic
>
>
> Thanks John, knowing that its being used somewhere
> gives me some confidence in my solution :)
>
> Yes, two circuits are connected to two different
> Internet gateway routers for diversity purpose.
>
> KJ
> --- John Elias <jelias_@hotmail.com> wrote:
> > KJ,
> > I work for a major ISP and the way you stated
> by
> > splitting the ip block
> > into 2 halves, advertising 1 half on 1 router and
> > the other half on the
> > second router but still advertising the full block
> > on both routers, is the
> > way we do here. Is the customer's connections
> from
> > their 2 routers
> > connected to 1 router or 2 routers of the ISP? If
> > he is connected to 1
> > router you could do some load balancing with an
> > interface command of 'ip
> > load-sharing per-packet' on both interfaces of the
> > ISP's access router, if
> > he is connected to 2 different router, the only
> way
> > is to split the block.
> >
> > John E.
> > CCIE #8150
> >
> >
> > >From: CCIE Candidate <ccie2001ca@yahoo.ca>
> > >Reply-To: CCIE Candidate <ccie2001ca@yahoo.ca>
> > >To: ccielab@groupstudy.com
> > >Subject: Load Balancing for Incoming Traffic
> > >Date: Thu, 25 Oct 2001 17:48:42 -0400 (EDT)
> > >
> > >Hi everyone:
> > >
> > >One of my customer is using two different
> circuits
> > to
> > >reach two different Internet gateways. I am doing
> > load
> > >balancing for outgoing traffic by using MHSRP.
> Now
> > my
> > >customer wants to do load-balancing for incoming
> > >traffic as well. The only way I can think of is
> > >advertising half of customer's IP block from one
> > >internet gateway and the other half block from
> the
> > >second internet gateway (full block will still be
> > >advertised from both gateways, but advertising
> half
> > >block will be more specific, therefore will be
> > >preferred). But I dont think this is a good way
> to
> > do
> > >it, is there any other feasible method to do it ?
> > >
> > >I am running OSPF with customer's routers and
> then
> > >redistributing it into BGP at my internet
> gateway,
> > but
> > >I can also run BGP with customer's routers using
> > >private AS numbers at customer's end.
> > >
> > >Thanks in advance
> > >
> > >KJ
> > >
> > >
> >
>
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