Using ACE RHI to inject a default route

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Apr 21st, 2008
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I think I posted this onto the wrong Forum. Anyone able to advise here?


Posted by: stevek1 - Network Administrator, Dept Natural Resources and Mines

Apr 18, 2008, 12:04am PST

Hi Folks,

I need to provide internal devices with active-active access to our clustered firewall which sits across 2 data centres.

I need to allow internal hosts to reach external/unknown networks via a default route.

We have ACE modules in our internal network aggregation 6513s at each site.

I aim to achieve this using at site 1 reaches the internet via firewall at site 1, device at site 2 reaches internet via firewall at site 2 (due to better route). If the firewall is inaccessible from site 2, ACE at site 2 removes the route from the MSFC using RHI and site 2 device traffic is re-routed to the site 1 exit point.

Has anyone out there done this before?

Regards, Steve.

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Replied by: stevek1 - Network Administrator, Dept Natural Resources and Mines - Apr 20, 2008, 6:48pm PST

Hi Folks,

It's Steve here again. I haven't had a response to my query as yet, but basically I need to know the validity of using ACE RHI to inject a default route as opposed to a host route.

Can anyone please advise?

Best Wishes, Steve.

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zahkhan Tue, 04/22/2008 - 03:42
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ACE will inject a host route. But, I may know what you are up to. Please see the attached document. This may help.

stevek1 Thu, 04/24/2008 - 07:22
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Thanks so much for your response Zahoor.

The solution you have provided is more complicated than I had in mind. For example we had not intended using FWSM (we don't have these modules). I just want to use our existing ACEs at each Data Centre to provide the injection of a default route to our internal EIGRP process based on the result of a probe to our Checkpoint FW. What do you think?



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