CISCO 2821 router internal routing across 2 GigabitEthernet interface

>ip route 192.168.1.0 255.255.255.255 gigabitethernet0/0
You should not use the interface as a gateway with Ethernet interfaces. Use instead the IP address of the next hop
Also look at the mask that you have applied. It should be 255.255.255.0 /24 instead of /32 that you show

R1
 no ip route 192.168.1.0 255.255.255.255 gigabitethernet0/0
 ip route 192.168.1.0 255.255.255.0 10.1.1.2

>Default gateway(internet firewall) is on the 192.168.2.x network
R2  
  no ip route 192.168.2.0 255.255.255.255 gigbitethernet0/0
  ip route 0.0.0.0 10.1.1.1

Hi lmore you can use the interface or the next hop address/ also you are missing the subnet and antoher thing george do you have internet access in both networks or do you whant to route everithing to one site???

Cheers

I hate to argue, but it is not recommended by Cisco to use the interface if the interface is Ethernet. It works fine for dialer interface, serial interfaces, but not Ethernet. Here's Cisco's story regarding the problem with ARP on a broadcast (Ethernet) interface:
 http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800ef7b2.shtml

Yes, I did forget the mask for the default on R2
  ip route 0.0.0.0 10.1.1.1 should be:
   ip route 0.0.0.0 0.0.0.0 10.1.1.1

Nice article

So we can post the final config if you have your internet access in router 2 netwrk:

Router 1

Gig0/0 - 10.1.1.1 / 24
Gig0/1 - 192.168.2.200 / 24

ip route 192.168.1.0 255.255.255.0 10.1.1.2
ip route   10.1.1.0     255.255.255.0 10.1.1.2

Router 2

Gig0/0 - 10.1.1.2 / 24
Gig0/1 - 192.168.1.200 / 24

ip route 0.0.0.0 0.0.0.0 10.1.1.1



                                                       255.255.255.0                             255.255.255.0
                                                                   10.1.1.1                                        10.1.1.2
network 192.168.2.0   Gig0/1------ROUTER1------Gig0/0--------------------------------Gig0/0---------ROUTER2------Gig0/1  network 192.168.1.0
subnet 255.255.255.0                                                                                                                                               subnet 255.255.255.0


Remember to add a route from your firewall to your Router 1 Gig0/1 Interface in order to gain access to internet.

Cheers

Thanks lmore for your pointer, if you need to ping the interface you will need it rigth???

> if you need to ping the interface you will need it rigth???
I'm assuming that you mean a route statement to its own directly connected network?
No. Never. The router knows what networks are directly connected to it.

Hi guys,

Thanks for your quick reply.

camacho.

Your diagram is right.

We are using a dedicated private fiber lease line (local ISP) for connection between 2 building.

We need to make sure all users on both internal network need to access both network.

lrmoore,

Default gateway for R1 is their firewall.
we already set a a route for the 192.168.1.0 network pointing to R1 LAN IP.

Thanks for the pointers.

So, after reading your postings,

Is the following config correct

Router 1

Gig0/0 - 10.1.1.1 / 24
Gig0/1 - 192.168.2.200 / 24

ip route 192.168.1.0 255.255.255.0 10.1.1.2

Router 2

Gig0/0 - 10.1.1.2 / 24
Gig0/1 - 192.168.1.200 / 24

ip route 0.0.0.0 0.0.0.0 10.1.1.1



                                                       255.255.255.0                             255.255.255.0
                                                                   10.1.1.1                                        10.1.1.2
network 192.168.2.0   Gig0/1------ROUTER1------Gig0/0--------------------------------Gig0/0---------ROUTER2------Gig0/1  network 192.168.1.0
subnet 255.255.255.0                                                                                                                                               subnet 255.255.255.0


i omitted the following as mention in the lrmoore's post

>ip route   10.1.1.0     255.255.255.0 10.1.1.2

Guys,

i will have to test this tomorrow, cause its abt midnight now.

i will award the points between both of you.
Is it ok?

R1 also needs a default to the firewall
 ip route 0.0.0.0 0.0.0.0 192.168.2.xxx <== xxx = firewall

>Default gateway for R1 is their firewall
What kind of firewall is it? I know for a fact that Cisco PIX will not re-direct packets and the Default gateway absolutely has to change to the R1 LAN interface IP 192.168.2.200

Everything else is good to go

Sure no prob. We are glad to help.

lmoore nice to team up with you

Cheers

Hi guys,

Sorry for the late reply..
Stuck @ customer site last few days.. no internet access.

Your configuration works fine...

Both networks are functioning well.

1 thing to add though.

On Fortigate firewall, have to add a static route for the 10.1.1.0 network in-between the 2 routers.

Such as the following static route (example);

10.1.1.0 255.255.255.0 192.168.2.200

if not, R2 network (192.168.1.0) would not receive any reply from the Firewall interface on R1 network.

For R1 network (192.168.2.0), we point gateway to R1 gig0/1 - 192.168.2.200

**we add the following on Router 1 as recommend by Irmoore;
R1 also needs a default to the firewall
 ip route 0.0.0.0 0.0.0.0 192.168.2.xxx <== xxx = firewall

For R2 network (192.168.1.0), we point gateway to R2 gig0/1 - 192.168.1.200

Final question, how to split the points between the both of you guy?

hi guys,

Found the Split points option...

Have already split the points equally between the both of you.

Thanks for your help & assistance..

both of you had been a great help to us.

Thanks 4 the points Amigo, and glad to help

Cheers