Hey guys - Just wanted to say you do a great job responding to this forum. I have an issue that I could use some help with. I have a Cisco 831 router connected to a DSL router provided by my ISP with 5 static ip addresses. All I want to do is provide Internet connectivity with this 831 router to some office staff but I can't get it to work when I statically map an IP address to the Ethernet1 interface. The Internet only works when I set Ethernet1 to DHCP from the DSL router. But, I don't want to do that because I need the other 4 static addresses for something else and I don't want the 831 to use the ones in use.
Here is the config:
!
version 12.3
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname ******
!
enable password 7 0215575819551B2A1F57
!
no aaa new-model
ip subnet-zero
ip name-server XXX.XXX.101.201
ip dhcp excluded-address 10.10.10.1
!
ip dhcp pool CLIENT
import all
network 10.10.10.0 255.255.255.0
default-router 10.10.10.1
dns-server XXX.XXX.101.201
lease 0 2
!
!
ip audit notify log
ip audit po max-events 100
no ftp-server write-enable
!
!
!
!
!
!
!
interface Ethernet0
ip address 10.10.10.1 255.255.255.0
ip nat inside
no cdp enable
hold-queue 32 in
!
interface Ethernet1
ip address XXX.XXX.101.205 255.255.255.248
ip nat outside
duplex auto
no cdp enable
!
interface FastEthernet1
no ip address
duplex auto
speed auto
!
interface FastEthernet2
no ip address
duplex auto
speed auto
!
interface FastEthernet3
no ip address
duplex auto
speed auto
!
interface FastEthernet4
no ip address
duplex auto
speed auto
!
ip nat pool mypool XXX.XXX.101.205 XXX.XXX.101.205 netmask 255.255.255.248
ip nat inside source list 102 interface Ethernet1 overload
ip classless
ip http server
no ip http secure-server
!
access-list 23 permit 10.10.10.0 0.0.0.255
access-list 102 permit ip 10.10.10.0 0.0.0.255 any
!
line con 0
exec-timeout 120 0
password 7 011E2616500E121C28584B590916
login
no modem enable
stopbits 1
line aux 0
line vty 0 4
access-class 23 in
exec-timeout 120 0
login local
length 0
!
scheduler max-task-time 5000
!
end
XXX.XXX.101.201 is the IP address of the DSL router. I want to use XXX.XXX.101.205 as the IP address for Ethernet1. When it works under DHCP, here is the portion of the config:
interface Ethernet1
ip address dhcp client-id Ethernet1
ip nat outside
duplex auto
no cdp enable
What I did was to static map all of the parameters I received from when The Ethernet1 interface was to DHCP to the current config. But, it doesn't work when running an Internet browser. I even did a nslookup when it was statically mapped, and I received answers when querying XXX.XXX.101.201. But, when I attempt to surf, it doesn't work. When I try to ping www.whatever.com at the client machine, I receive Destination host unreachable. Do you guys have any ideas? THANKS!
