Inter VLAN routing

[andrewbutler155]

Good evening,

I am currently studying for my CCNA and have been attempting the inter VLAN routing practicle using 'Router on a stick'.  I know this is meant to be a fairly straight forward exercise  but I can't see where I'm going wrong and was wondering if some one could point me in the right direction. 

I cannot get the hosts in the different VLANs to ping each other.  This is how I am set up:

I have a Cisco 2950 switch running IOS 12.1, a Cisco 1800 router running IOS 12.4 and 2 laptops, one running vista and one running windows 7.

I have created the following VLANs:

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/1, Fa0/4, Fa0/5, Fa0/6
                                                Fa0/7, Fa0/8, Fa0/9, Fa0/10
                                                Fa0/11, Fa0/12, Fa0/13, Fa0/14
                                                Fa0/15, Fa0/16, Fa0/17, Fa0/18
                                                Fa0/19, Fa0/20, Fa0/21, Fa0/22
                                                Fa0/23, Fa0/24, Gi0/1, Gi0/2
2    Andrew                           active    Fa0/2
3    Marc                             active    Fa0/3

VLAN 1 has been configured with the IP 10.142.5.129 255.255.255.192 default gateway 10.142.5.1

I have the Vista laptop patched into fa0/2 and the windows 7 laptop in fa0/3.  The switch port configs are as follows:

interface FastEthernet0/2
description LAN connection to Andrew PC
switchport access vlan 2
no ip address
spanning-tree portfast
!
interface FastEthernet0/3
description LAN connection to John PC
switchport access vlan 3
no ip address
spanning-tree portfast

The IP addresses of the laptops are as follows:

Vista (VLAN 2) - 10.142.5.6 255.255.255.192 default gateway 10.142.5.1

7 (VLAN 3) - 10.142.5.66 255.255.255.192 default gateway 10.142.5.65

I have configured a trunk on fa0/1 of the switch to fa 0 on the router, the sw port config as follows:

interface FastEthernet0/1
description trunk connection to R1
switchport mode trunk
no ip address

Fa0 on the router has been configured with 2 subinterfaces as follows:

interface FastEthernet0
description Beechfield LAN A
no ip address
speed 100
full-duplex
!
interface FastEthernet0.2
encapsulation dot1Q 2
ip address 10.142.5.1 255.255.255.192
no snmp trap link-status
!
interface FastEthernet0.3
encapsulation dot1Q 3
ip address 10.142.5.65 255.255.255.192
no snmp trap link-status

I can successfully ping both subinterfaces from both hosts but yet can't ping one host from the other.  Can anyone point out what I am missing?

Any help would be greatly appreciated.

Thanks

Andy

[ctough]

Hi Andy,

What does the output of "sh int fa0/1 switchport" look like?

Cheers,

Chris

[andrewbutler155]

Hi Chris,

Thanks very much for your response, very much appreciated!  The problem I was experiencing was just a windows firewall issue.

Thanks again

Andy

[Leo Laohoo · Accepted solution]

I can successfully ping both subinterfaces from both hosts but yet can't ping one host from the other

Please disable the firewall on your clients. 

[andrewbutler155]

Hi Leolaohoo,

Thanks for your response, you were bang on the money!

Cheers

Andy