Cisco 1811, How to get Internet access on my Laptop?

Posted on 2013-01-05
Medium Priority
Last Modified: 2013-01-11
Hi Guys,

Hope you can give me the last push :-)

I got a Cisco 1811, with on FA0  ( WAN ) acting as a dhcp client and on FA1 ( LAN ) my laptop wich is getting a address form the DHCP Pool.

I receive a ip address on my laptop but it doesn't know the way to get outside.

here is my config:

Building configuration...

Current configuration : 3544 bytes
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
hostname Router-1811
logging buffered 51200 warnings
enable secret 5 BLABLA
enable password BLABLA
no aaa new-model
resource policy
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
no ip routing
no ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address
ip dhcp pool DATA
   import all
   lease 8
crypto pki trustpoint TP-self-signed-1623916396
 enrollment selfsigned
 subject-name cn=IOS-Self-Signed-Certificate-1623916396
 revocation-check none
 rsakeypair TP-self-signed-1623916396
crypto pki certificate chain TP-self-signed-1623916396
 certificate self-signed 01
  30820244 308201AD A0030201 02020101 300D0609 2A864886 F70D0101 04050030
  31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
  69666963 6174652D 31363233 39313633 3936301E 170D3133 30313035 31363532
  35335A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
  4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D31 36323339
  31363339 3630819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
  8100AD29 D515C443 92517F4B 903D97AC B3F744C0 93924489 1EBA9BD2 1C190B4B
  508A73A4 573A28DF F16F34CA 63597891 0D45E032 D9BA41E8 310CB984 D50C6C5F
  ED28F54B 928546F3 82A16C2D B20B27A7 62D151E7 FE782E18 5953E88E B0562053
  CA025DCE 256016A9 14E252D0 5EFCE00B 0C465FC6 C6D32468 78293624 B3C929F7
  B42D0203 010001A3 6C306A30 0F060355 1D130101 FF040530 030101FF 30170603
  551D1104 10300E82 0C526F75 7465722D 31383131 2E301F06 03551D23 04183016
  8014DFCF AC5FCFA1 06BB230A F1572513 1C6B9C10 D682301D 0603551D 0E041604
  14DFCFAC 5FCFA106 BB230AF1 5725131C 6B9C10D6 82300D06 092A8648 86F70D01
  01040500 03818100 4CD662F4 A0672668 3FF9F06A 8C5831DC 54702460 96564218
  A8A360F4 3E4849E5 341DA5A6 39B72549 2965DF3D 0DE03F18 081582CA CD13365E
  7F720EFE 35E4009D 1E169E19 69493B3E 0547DD4A 6CC4AADE 06AAFE42 57A4EC75
  B8921015 5808C313 67160206 5F4BDCB5 CE86BE59 A4D76930 768581C0 4F993CAA
  1A50842C 20BD9754
username admin privilege 15 password 0 BLABLA
interface FastEthernet0
 description WAN
 ip address dhcp
 ip nat outside
 ip virtual-reassembly
 no ip route-cache
 duplex auto
 speed auto
interface FastEthernet1
 description LAN
 ip address
 ip nat inside
 ip virtual-reassembly
 no ip route-cache
 duplex auto
 speed auto
interface FastEthernet2
interface FastEthernet3
interface FastEthernet4
interface FastEthernet5
interface FastEthernet6
interface FastEthernet7
interface FastEthernet8
interface FastEthernet9
interface Vlan1
 description Lan2
 no ip address
 no ip route-cache
interface Async1
 no ip address
 encapsulation slip
 no ip route-cache
ip classless
ip route FastEthernet0
ip http server
ip http authentication local
ip http secure-server
access-list 1 permit
line con 0
line 1
 modem InOut
 stopbits 1
 speed 115200
 flowcontrol hardware
line aux 0
line vty 0 4
 privilege level 15
 password blabla
 login local
 transport input telnet ssh
no scheduler allocate

Hope you can help me! Thanks.
Question by:Vale46
LVL 30

Expert Comment

ID: 38747190
show us start run cmd ipconfig /all
LVL 22

Expert Comment

ID: 38747284
Can you post the result from the following command on the router?
show int fa0

Open in new window

LVL 17

Expert Comment

ID: 38747312
Your missing the below command.

router(config)#ip nat inside source list 1 int fa0 overload

Also noticed That you have ip routing disabled (no ip routing). Try enabling it;

router(config)#ip routing
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Author Comment

ID: 38748222
DHCP server:
dns: --> is my provider

show int fa0:
Router-1811#sh int fa0
FastEthernet0 is up, line protocol is up
  Hardware is PQ3_TSEC, address is 0015.6205.f7d8 (bia 0015.6205.f7d8)
  Description: WAN
  Internet address is
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:05, output 00:00:00, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     2142 packets input, 252317 bytes
     Received 1502 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog
     0 input packets with dribble condition detected
     8349 packets output, 1224384 bytes, 0 underruns
     0 output errors, 0 collisions, 2 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

I turned on ip routing and  inserted: router(config)#ip nat inside source list 1 int fa0 overload

Still no go from laptop to the Internet. On the router i can't ping to external servers en domains any more.

Author Comment

ID: 38748225
sh ip route:

Gateway of last resort is to network

C is directly connected, FastEthernet1 is variably subnetted, 2 subnets, 2 masks
C is directly connected, FastEthernet0
S [254/0] via, FastEthernet0
S* is directly connected, FastEthernet0

Accepted Solution

Vale46 earned 0 total points
ID: 38748956
Hi guys:

I got the solution to it from a other forum:

replace this:
ip route FastEthernet0 permanent
by this:
ip route dhcp

Thanks for your replies!

Author Closing Comment

ID: 38766425
I got the solution to it from a other forum!

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