Does Cisco 1760 Series Router Support Multiple Gateways? - comp.dcom.sys.cisco

Message from discussion Does Cisco 1760 Series Router Support Multiple Gateways?

bo...@hotmail.co.uk

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More options May 28, 9:39 am

Newsgroups: comp.dcom.sys.cisco

From: Bo...@hotmail.co.uk

Date: Wed, 28 May 2008 06:39:16 -0700 (PDT)

Local: Wed, May 28 2008 9:39 am

Subject: Re: Does Cisco 1760 Series Router Support Multiple Gateways?

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On 28 May, 01:08, response3 <i...@atomitek.com> wrote:

> On May 17, 9:34 pm, Mike Rahl <miker...@gmail.com> wrote:

> > On May 16, 11:33 am, hasselboxs...@gmail.com wrote:

> > > I'm curious if the Cisco 1760 router supports multiple gateways, and
> > > if so a general "hint" as to configuration - or commands/areas to read
> > > up on.

> > > In short I'd like to use it with 2 internet connections,
> > > simultaneously, not as a failover type configuration.

> > > Thanks for any information.

> > With the correct IOS, a substantial amount of RAM (preferably 256 megs
> > of RAM) and the appropriate WIC card, you can run full BGP tables on
> > the router, which would allow you to manage 2 internet connections.
> > You'd need your own BGP AS, public IP addresses, and a maxed out 1760
> > router. Even then, though it could do it, it would possibly overload
> > when loading the full internet tables. If you want to run 2 internet
> > connections, I would more likely recommmend the 2800 series router.

> You don't need BGP if you only need to have outbound load-balancing.
> Take a look at this:

> http://www.nil.com/ipcorner/SmallSiteMultiHoming/

> Also, Cisco has a similar article:

> http://www.cisco.com/en/US/products/sw/secursw/ps1018/products_config...

> In either case, load-balancing inbound traffic will be a challenge,
> even with BGP. I've done this where one link is used for traffic
> initiated from internally, the other externally. This simplifies NAT
> and still allows for one link to fail, provided you're using some sort
> of DNS failover for your external services.- Hide quoted text -

> - Show quoted text -

That is an interesting document - quite a lot in it for a few pages.

To the Original Poster.

If your router is NATting your internet traffic then
from the document you will be able to reasonably
load balance upload and download traffic to and from
typical web browsing PCs.

If your router is not your nat device e.g. you have a firewall inside
it
then you will only be able to load balance outbound packets
whch is often not what is wanted.

More information may result in more precise answers.
Application - web browsing, email, web servers,
Where is your NAT taking place.

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