Hi. This question is in regards to my home network. I am on cable.
The diagram of my network can be viewed at http://mvpbaseball.cc/network.jpg
The diagram is of vital importance to look at first, as this question is probably going to confuse you by the time you're done (hard to word it right, so much crap)
I currently have 3 routers in my home LAN.
-basic cheapy cable router (connected to cable modem of course)
-Two Cisco 2501 routers ( I call them 2501a and 2501b).
I have 3 networks so to speak:
My Cable router's external IP gets all the necessary info from my ISP. The internal IP is set to 192.168.1.1. My cable router has a built in switch, into where my first cisco router plugs into (2501a)
2501a's e0 IP address is 192.168.1.40. (The e0 interface of 2501a is connected to my cable router as said.) Now the serial interface of 2501a is set to 192.168.0.5 and is connected to my second cisco router's serial interface (router 2501b) . 2501bs serial interface has an IP of 192.168.0.6. The e0 interface of 2501b is 192.168.2.1
I have 2 clients in the 192.168.1.0 network. They are using the 2501a's Ip address as their gateway (which is 192.168.1.40).
I have 1 client in the 192.168.2.0 network. He is using router (2501b) 192.168.2.1 as his gateway.
All of my clients can ping WAN addresses by IP. They can also all ping each other by IP. So the routing is working properly (thank god for RIP)
Name resolution refuses to work at all. None of my clients can resolve names locally. To access another computer in my LAN, I have to type the IP instead of netbios name. Furthermore, none of my PCs can resolve host names on the WAN either. I have to enter in IPs manually when surfing the web. I tried to ping my ISP's DNS server and it does not respond. However, I am positive my ISPs dns server is fully functional. Here's why:
*If I connect a client directly to my cable router (192.168.1.1) and use the cable router as the client's gateway, everything works. You are then able to ping WAN or local computers by host name. You are also able to ping my ISPs DNS servers.
*There are no ACLs on any of the routers.