Re: Two default gateway (IP Route ..)

From: Tarun Pahuja (pahujat@gmail.com)
Date: Wed Nov 14 2007 - 16:54:55 ART

Muhammad,
                    Please read up on the following link, it might not solve
all your concerns with outbound/inbound redundancy, but will at least point
you in a direction which is very commonly being used my clients with
broadband connections, where the Ethernet hand off might still be up ,but,
the service might be down, a case very similar to Vsat Links.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123newft/123limit/123x/123xe/dbackupx.htm#wp1071672

HTH,
Tarun

On Nov 13, 2007 10:22 AM, Muhammad Saleem <msaleems@gmail.com> wrote:

> Hi Experts,
>
>
>
> This is a little odd question but related to one of the routing issues.
>
> I have one L3 switch, one Server VLAN, Two ISPs, one is through VSAT which
> is primary link and second one is DSL link.
>
> VSAT is further connected to outside interface of CISCO Pix Firewall
> protecting Web and Email server.
>
> DSAL is further connected to Microsoft ISA firewall outside interface, ISA
> FW will be use to publish Web and Email servers
>
>
>
> I am going to provide availability of Web and Email servers in case of
> VSAT
> link is down.
>
> In CISCO Cat 3750 switch I have defined VLAN for Web and Email servers and
> in servers Default Gateway IP I defined the IP address of VLAN IP address
> (SVI IP address)
>
> in CISCO Cat 3750
>
> ip route 0.0.0.0 0.0.0.0 192.168.43.2
>
> (192.168.43.2 is the Internal IP of CISCO Pix firewall)
>
> With this switch configuration VSAT connection is working fine and I can
> access web and email server from outside and inside.
>
>
>
> I want to use DSL link for inbound connection only if main VSAT link is
> down, people should be able to access web and Email server from Internet.
>
>
>
> Now, I am going to add DSL connection in my network so, should I just add
> one more
>
> IP ROUTE entry in my L3 switch like
>
> ip route 0.0.0.0 0.0.0.0 192.168.43.10 ?
>
> (192.168.43.10 is the inside IP of Microsoft ISA firewall)
>
>
>
> Is this enough to get web and email service availability or what should I
> do
> more??
>
> How can I define two Gateways with different distance, so the L3 switch
> recognize that main VSAT link (CISCO Pix) is down so use the DSL link(ISA
> Server).
>
>
>
> I will appreciate all the responses.
>
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