Can you please show me where am I wrong?

[gambitlegend]

Hi!

My ISP provides me with a public ip address which I have connected to the port g1/0/24 of my Catalyst 3750.

I have this configuration which allows me to ping any external address from my switch, but when I try ping to an external address (google.com) from my laptop (g1/0/1 2) I doesn't get out, even when I try to ping the gateway which the ISP gave me it times out.

...

hostname Switch

!

enable secret 5 $1$93L9$GrhoWTsXbRbXK3rwl90GC/

!

no aaa new-model

clock timezone UTC 1

switch 1 provision ws-c3750g-24ts-1u

system mtu routing 1500

vtp domain [myName]

vtp mode transparent

ip subnet-zero

ip routing

!

!

!

!

no file verify auto

spanning-tree mode pvst

spanning-tree extend system-id

!

vlan internal allocation policy ascending

!

vlan 2,10

!

interface GigabitEthernet1/0/1

description User

switchport access vlan 2

switchport mode access

!

interface GigabitEthernet1/0/2

!

interface GigabitEthernet1/0/3

!

interface GigabitEthernet1/0/4

!

interface GigabitEthernet1/0/5

switchport access vlan 10

switchport trunk native vlan 10

!

interface GigabitEthernet1/0/6

!

interface GigabitEthernet1/0/7

!

interface GigabitEthernet1/0/8

!

interface GigabitEthernet1/0/9

!

interface GigabitEthernet1/0/10

!

interface GigabitEthernet1/0/11

!

interface GigabitEthernet1/0/12

!

interface GigabitEthernet1/0/13

!

interface GigabitEthernet1/0/14

!

interface GigabitEthernet1/0/15

!

interface GigabitEthernet1/0/16

!

interface GigabitEthernet1/0/17

!

interface GigabitEthernet1/0/18

!

interface GigabitEthernet1/0/19

!

interface GigabitEthernet1/0/20

!

interface GigabitEthernet1/0/21

!

interface GigabitEthernet1/0/22

!

interface GigabitEthernet1/0/23

!

interface GigabitEthernet1/0/24

no switchport

ip address 196.202.255.33 255.255.255.0

!

interface GigabitEthernet1/0/25

switchport access vlan 10

switchport trunk native vlan 10

!

interface GigabitEthernet1/0/26

switchport access vlan 10

switchport trunk native vlan 10

!

interface GigabitEthernet1/0/27

switchport access vlan 10

switchport trunk native vlan 10

!

interface GigabitEthernet1/0/28

!

interface Vlan1

no ip address

shutdown

!

interface Vlan2

description User

ip address 10.128.2.1 255.255.255.0

!

interface Vlan10

description Management

ip address 10.128.1.1 255.255.255.0

!

ip default-gateway 196.202.255.254

ip classless

ip route 0.0.0.0 0.0.0.0 196.202.255.254

ip http server

!

....

[Roman Rodichev]

You don't have any NAT configuration. You need NAT. But NAT is not supported on Catalyst switches such as 3750. The only Catalyst switch that supports NAT is 6500. You will need a router, something like Cisco 1841 or 1941

[Antonio Knox]

Roman is correct.  Your internal addresses are not routed on the internet so you will need to implement NAT so that your traffic is viewed as a routable ip by the internet.  A router will be required for this.

[gambitlegend]

Thanks a lot guys

[Julio E. Moisa]

I guess that the switches 3750 are layer 3

can you type the: ip routing command on your switch?

You can configure a PAT and the 3750 accepts any kind of NAT....... BUT if you have a correct IOS.

Good luck.

[Roman Rodichev]

3750 doesn't support NAT or PAT with any IOS