i
have a setup for my small network like:
ADSL
---------- Router (2901) ---------
catalyst Switch (2960) -------- LAN User (Data+VOIP+WLAN)
Router
Config:
ip
dhcp pool Data
network WS-C3750X-24T-L 172.16-.1.0 255.255.255.0
default-router
172.16.1.1
dns-server
192.168.1.1 4.2.2.2
ip
dhcp pool Voice
network
172.16.2.0 255.255.255.0
default-router
172.16.2.1
dns-server
192.168.1.1 4.2.2.2
ip
dhcp pool WLAN
network
172.16.3.0 255.255.255.0
default-router
172.16.3.1
dns-server
192.168.1.1 4.2.2.2
interface
gigEthernet0/1
description
Facing the ISP (the ADSL Modem)
ip
address dhcp
ip
nat outside
i
did (show dhcp server) and got an ip address from the ADSL modem for this port
------192.168.1.2
!
interface
gigEthernet0/0
description
****Facing LAN*****
no
ip address
ip
nat inside
interface
gigEthernet0/0.1
description
****Facing LAN-Data*****
ip
address 172.16.1.1 255.255.255.0
encapsulation
dot1q 1 native
interface
gigEthernet0/0.2
description
****Facing LAN-Voice*****
ip
address 172.16.2.1 255.255.255.0
encapsulation
dot1q 2
interface
gigEthernet0/0.3
description
****Facing LAN-WLAN*****
ip
address 172.16.3.1 255.255.255.0
encapsulation
dot1q 3
access-list
1 permit 172.16.0.0 0.0.0.255
ip
nat inside source list 1 interface gigethernet0/1 overload
ip
router 0.0.0.0 0.0.0.0.0 gigethernet 0/1
Switch
Config:
int
vlan 1
Description***Data**
ip
address 172.16.1.2 255.255.255.0
!
int
vlan 2
Description***Voice**
ip address
172.16.2.2 255.255.255.0
!
int
vlan 3
Description***WLAN**
ip
address 172.16.3.2 255.255.255.0
ip
default-gateway 172.16.1.1
int
gig 1/0
description
*****Connected to Router*****
switchport
mode trunk
int
fa 1/0
switchport
mode access
switchport
access vlan1
switchport
voice vlan 2
Above
is the config that i configure on router and switch but unfortunatelt internet
does not work from any pc connected to the switch
i
checked from router (sh ip nat translation)
but output showing nothing.
same
router is being used as CME also ang having the voice over ip configuration on
it.... is that is the problem ?
atteched
file is show version of the router if needed to check plzi am getting ip
address on pc but not able to browse.
while
i can browse when connect to the modem direct with cable to my pc
any
suggestion and idea will be very appreciated! and i need urgent help pl
You
shall issue "ip nat inside" command under the subinterfaces not on
the main interface.
And
one more thing permit 172.16.0.0 0.0.0.255 will only allow to translate
172.16.0.x adresses
interface
gigEthernet0/0
description
****Facing LAN*****
no
ip address
interface
gigEthernet0/0.1
description
****Facing LAN-Data*****
ip
address 172.16.1.1 255.255.255.0
encapsulation
dot1q 1 native
ip
nat inside
interface
gigEthernet0/0.2
description
****Facing LAN-Voice*****
ip
address 172.16.2.1 255.255.255.0
encapsulation
dot1q 2
ip
nat inside
interface
gigEthernet0/0.3
description
****Facing LAN-WLAN*****
ip
address 172.16.3.1 255.255.255.0
encapsulation
dot1q 3
ip
nat inside
access-list
1 permit 172.16.0.0 0.0.255.255
ip
nat inside WS-C3560X-48PF-S source list 1 interface gigethernet0/1 overload
ip
router 0.0.0.0 0.0.0.0.0 gigethernet 0/1
