Routing multiple internet connections through 2811 router

Routing multiple internet connections through 2811 router

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Subject Author Date
Routing multiple internet connections through 2811 router stevelup 08-04-2005
Posted by stevelup on August 4, 2005, 7:28 pm
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Hi

We've currently got a microwave internet connection which is pretty
unreliable. This is connected via a PIX 506E onto our LAN.

The current network layout is like this:-

a.b.66.72 = PIX IP address
a.b.77.152/28 are routed through a.b.66.72 where static NAT is used to
expose some internal servers.

We've got our new bonded DSL solution based around a Cisco 2811 router. This
has 2 x WIC1-ADSL's in it, and the two onboard Fast Ethernet interfaces.

The network layout for this connection is like this:-

c.d.203.105 = Router IP address
c.d.203.104/28 is our block of 8 IP's (six usable, five if you take the
router into consideration)

FE 0/0 is on the LAN side which will be connected to the PIX
FE 0/1 is currently unused

What I'm hoping to do is have both connections working so there is no
downtime during the DNS propagation.

Here's what I'd like to do - can someone tell me if it's possible...

I'd like to connect the microwave connection into FE 0/1 and then route
everything through the PIX.

Cue dodgy ASCII Art:-


+------------+
ADSL1 > | ATM0/0/0 |
| |
ADSL2 > | ATM0/1/0 |
| |
Microwave > | FE0/1 |
| | +-----+
| FE0/0 | > | PIX | > LAN
|(2811) | +-----+
+------------+

I was thinking I could possibly use static NAT on the router to map either
the microwave IP's to the DSL ones or vice versa.

I really don't know where to begin with this so I appreciate any assistance
I may get.

Thanks in advance,

Steve




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other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

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