[c-nsp] HSRP Question. two routers, two isp's, no bgp (yet)

[Rodney Dunn]

On Sun, Aug 07, 2005 at 05:53:00AM -0700, Joseph Jackson wrote:
> Hello All,
> 
>  
> 
>             I have two routers with links to different isp's (primary and
> backup).  I use the ip address space provide by the primary isp for devices
> behind the router its connected too.  I have a pix firewall doing nat behind
> both of these routers (connected to a switch).  My question.  Since I use
> nat from an ip provide by my primary isp,  when the primary link fails and
> the standby hsrp router assumes the virtual ip address (the default gateway
> of the pix) how will packets know how to get back to the network?

They will not.

  Does the
> standby hsrp router change the source ip address?

Routers don't change ip addresses unless you tell it to.

 Do I need to setup nat so
> it does do that?

Yeah. If you don't need inbound connections then just set it up
to do PAT overload on the egress interface that connects to ISP2.

>I am only worried about outbound traffic as of this time.
> 
>  
> 
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> Thanks
> 
>  
> 
> Joseph
> 
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