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Help with 2811 - routing between f0/0 and f0/1

Antonio Aliaga
Level 1
Level 1

I have a Cisco 2811 with 2 fastEthernets. This is configured with:

LAN0 (192.168.0.0/24)  <---------> f0/0 (192.168.0.6) --- f0/1 (192.168.1.6) <----------> LAN1 (192.168.1.0/24) <----------> INTERNET

The 2811 can access to Internet. I can ping any host (google.com), and 192.168.0.x, and 192.168.1.x. All is OK.

But i can't ping from 192.168.0.x to 192.168.1.x. LAN1 can't access to LAN2.

This is the configuration

Thanks.

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

Building configuration...

Current configuration : 1063 bytes

!

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname cisco2811

!

boot-start-marker

boot-end-marker

!

enable secret 5 $1$KR8N$MNFXgI49lHx9i7hqzi.Fi0

enable password xxxxxxxx

!

no aaa new-model

!

resource policy

!

ip subnet-zero

!

!

ip cef

!

!

ip name-server 80.58.61.250

ip name-server 80.58.61.254

!

!

!

!

!

!

!

!

!

interface FastEthernet0/0

description $ETH-LAN$

ip address 192.168.0.6 255.255.255.0

ip nat inside

ip virtual-reassembly

duplex auto

speed auto

no mop enabled

!

interface FastEthernet0/1

description $ETH-WAN$

ip address 192.168.1.6 255.255.255.0

ip nat outside

ip virtual-reassembly

duplex auto

speed auto

!

interface ATM0/0/0

no ip address

shutdown

no atm ilmi-keepalive

dsl operating-mode auto

!

ip default-gateway 192.168.1.1

ip classless

ip route 0.0.0.0 0.0.0.0 192.168.1.1

!

ip http server

no ip http secure-server

!

!

!

control-plane

!

!

!

line con 0

line aux 0

line vty 0 4

password xxxxxxx

login

!

scheduler allocate 20000 1000

!

end

6 Replies 6

Yasien Adams
Level 1
Level 1

is this the entire config?

Im assuming that fa0 and fa1 are going into seperate switches?

there are no acls configured?

which interface is for internet?

whats the reason for the 2 subnets?

Hi, Yasien

Yes, this is te entire config. An this is  the graphical configuration:

LAN0 (192.168.0.0/24)

            ||

f0/0 (192.168.0.6)

            ||

f0/1  (192.168.1.6)

            ||

LAN1 (192.168.1.0/24)

            ||

MODEM/ROUTER (192.168.1.1)

            ||

INTERNET

I have 2 subnets because the 192.168.1.x is a subnet with cameras, etc. The default gateway of entire network is a modem/router zyxel with IP 192.168.1.1

Both f0/0 and f0/1 are connected into separate switches.

Thanks.

so devices on 0.x can get to the internet ?

devices on 1.x can get to the internet?

so devices on 0.x can get to the internet ? => NO INTERNET ACCESS, GATEWAY of devices is 192.168.0.6

devices on 1.x can get to the internet? => YES, because GATEWAY is configured to 192.168.1.1 directly.

try

ip routing

OR

int fa0/1

no ip nat outside

ip nat inside

OR

remove NAT from both interfaces

im guessing your modem is already doing NAT

None of the three solutions solves the problem

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