Networking 2500 routers

[raggedranger]

I have 2 routers in my home lab, one connects to my ISP, and the ethernet interface gets an IP via DHCP from my cable modem, can ping out, and resolve dmains by DNS from a pre-set DNS server. However I have been struggling when connecting this ISP oriented router to my second router, also 2500 sderies.

I am able to ping from the 2nd route to the internal and external IP addresses of the ISP facing router, however it doesnt go further. I have a feeling i've missed some needed routing settings as when i connect a host to router 2, i can only png the gateway and nothing further.

Can someone who undoubtably knows more than I, take a look at my 2 configs and advise further please, been tearing my hair out almost over the weekend trying to get this to work, and from my readings getting the connection to the ISP was the hard part over, but low and behold....


IP facing router config

Building configuration...

Current configuration : 695 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname CableRouter
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$P.dh$2Ejg1ZK1ozF22vMgZQWFE/
!
no aaa new-model
ip subnet-zero
!
!
!
!
interface Ethernet0
ip address dhcp client-id Ethernet0
!
interface Serial0
ip address 192.168.0.1 255.255.255.0
clock rate 64000
!
interface Serial1
no ip address
shutdown
!
interface TokenRing0
no ip address
shutdown
!
router rip
version 2
network 82.0.0.0
network 192.168.0.0
network 192.168.1.0
!
no ip http server
ip classless
!
!
!
!
line con 0
password cisco
login
line aux 0
line vty 0 4
login
!
end

CableRouter#sh ip int br
Interface IP-Address OK? Method Status Protocol
Ethernet0 82.36.255.18 YES DHCP up up
Serial0 192.168.0.1 YES manual up up
Serial1 unassigned YES NVRAM administratively down down
TokenRing0 unassigned YES NVRAM administratively down down

CableRouter#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is 82.36.255.1 to network 0.0.0.0

80.0.0.0/32 is subnetted, 1 subnets
S 80.235.128.125 [254/0] via 82.36.255.1, Ethernet0
82.0.0.0/24 is subnetted, 1 subnets
C 82.36.255.0 is directly connected, Ethernet0
C 192.168.0.0/24 is directly connected, Serial0
R 192.168.1.0/24 [120/1] via 192.168.0.2, 00:00:06, Serial0
S* 0.0.0.0/0 [254/0] via 82.36.255.1

============================================================ =====

2nd Router config:

Current configuration : 689 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname TopRouter
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$P.dh$2Ejg1ZK1ozF22vMgZQWFE/
!
no aaa new-model
ip subnet-zero
!
!
!
!
interface Ethernet0
ip address 192.168.1.1 255.255.255.0
ip nat inside
!
interface Serial0
no ip address
shutdown
!
interface Serial1
ip address 192.168.0.2 255.255.255.0
!
interface TokenRing0
no ip address
shutdown
!
router rip
version 2
network 192.168.0.0
network 192.168.1.0
!
no ip http server
ip classless
!
!
!
!
line con 0
password cisco
login
line aux 0
line vty 0 4
password cisco
login
!
end


Interface IP-Address OK? Method Status Protocol
Ethernet0 192.168.1.1 YES NVRAM up up
Serial0 unassigned YES NVRAM administratively down down
Serial1 192.168.0.2 YES manual up up
TokenRing0 unassigned YES NVRAM administratively down down

TopRouter#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

R 82.0.0.0/8 [120/1] via 192.168.0.1, 00:00:29, Serial1
C 192.168.0.0/24 is directly connected, Serial1
C 192.168.1.0/24 is directly connected, Ethernet0


Many thanks to any advice.

[Spice_Weasel]

Yes, you're correct, it is a routing problem. The second router has no default route, and only knows the directly connected networks and the 82.0.0.0/8 from router 1.

Add a default route to router 2 pointing to router 1, e.g.:

ip route 0.0.0.0 0.0.0.0 192.168.0.1

Also, you will need to configure nat in order to reach any internet hosts from inside. And I would suggest removing rip from the external interface of router 1.


Spice_Weasel

[raggedranger]

Many thanks, thats helped loads