troubleshooting Question

need help with cisco router and dhcp

Avatar of valdezf
valdezfFlag for United States of America asked on
RoutersDHCPNetwork Architecture
13 Comments1 Solution1504 ViewsLast Modified:

I've been configuring my new Cisco 871w Integrated Services router on my home network, but I haven't been able to get DHCP working on the LAN ports. This is what I have done

Router(config)# ip dhcp excluded-address
Router(config)# ip dhcp pool home

on all interfaces fa0 - fa3
#switchport mode access
#switchport access vlan 1

I have enabled service dhcp

I can ping vlan 1
I can ping my default route (home router)
I can ping 

I have wr erase twice to do everything all over again, but I have not been successful

this is my config

R1#sh run
Building configuration...

Current configuration : 3552 bytes
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname R1
ip subnet-zero
ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address
ip dhcp pool home
   import all
   lease 5
ip domain name XXXX
ip name-server
ip name-server
ip name-server
ip ssh version 2

interface FastEthernet0
interface FastEthernet1
interface FastEthernet2
interface FastEthernet3
interface FastEthernet4
 ip address
 ip nat outside
 ip virtual-reassembly
 duplex auto
 speed auto
interface Dot11Radio0
 no ip address
 speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0 54.0
 station-role root
interface Vlan1
 ip address
 ip nat inside
 ip virtual-reassembly
ip default-gateway
ip classless
ip route
access-list 101 permit udp any any eq domain
access-list 101 permit udp any eq domain any


VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0, Fa1, Fa2, Fa3
1002 fddi-default                     active
1003 token-ring-default               active
1004 fddinet-default                  active
1005 trnet-default                    active

I followed this instructions from the Cisco website, for my IOS version "flash:c870-advsecurityk9-mz.124-4.T3.bin"

I can have DHCP working on GNS3 and Packet Tracer with no problems...I'm not sure what's wrong.

thanks in advance!!
Don Johnston
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