My R1 is our production router for the rest of our office. I am trying to set u a lab environment within our network by using a Cisco 1841(R2) Router connected to the switch. I've added ACL rules, NAT, and NAT Overload already to R2. When I use dhcp on R2, I am able to access the internet when connected onto the 192168.0.0 network.
R2 is able to ping R1 and the 172.16.0.0/24 network, but I am not able to ping FROM R1 to R2. I am able to access the internet when connected to R2's network.
I want to consolidate all my static IP addresses so I excluded addresses 172.16.0.1 to 172.16.0.20 on R1's dhcp pool. However, when I assigned a static IP address such as 172.16.0.5 to fa0/0 of R2, I am no longer able to access the internet. I also cannot ping R1 from R2 anymore. I would like to be able to assign static IP addresses on a few routers of labs that we are setting up. Thanks
Which interface on R2 did you try to ping from R1? and
What source address on R1 did you use?
I'm assuming you aren't using a routing protocol between R1 and R2?
If you can access the internet as you say, I'm assuming you tried to ping R2's fa0/1 interface from R1? In this case, R1 needs to know how to get to the 192.168 network. Because you are NATing at R2, I assume you do not have a static route at R1 for this 192.168.0.0/24 network sitting behind R2. Since you NAT at R2, this explains why your internet works, but your ping doesn't
I see no reason why setting an excluded range on R1 and assigning R2 and IP as you did wouldn't work. Only thing I can think of is that you didn't update your ACLs/NAT config to include the new IP address. Can you post your config?
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