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ISR 1841 DHCP Problem

gkonheiser
Level 1
Level 1

Hi There

For some reason DHCP is not working on my 1841, I have tryed debug DHCP but see nothing. I think it may be due to may connecting MY LAN via one of the switch ports (FE0/0/1), but Im not sure? Would be greatfull for any help on this, Thanks.   Here is config,

Building configuration...

Current configuration : 4575 bytes

!

! Last configuration change at 13:36:33 UTC Wed Oct 10 2012 by

! NVRAM config last updated at 13:24:47 UTC Wed Oct 10 2012 by

!

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname 3.100

!

boot-start-marker

boot-end-marker

!

no logging buffered

enable secret 5 $1$jYzP$JHBnIoVQjtjBWV4.vZrUn/

!

no aaa new-model

ip cef

!

!

ip dhcp use vrf connected

ip dhcp excluded-address 192.168.3.1 192.168.3.230

!

ip dhcp pool 42

   network 192.168.3.0 255.255.255.0

   domain-name 42

   dns-server 8.8.8.8 192.168.3.100

   default-router 192.168.3.100

!

ip dhcp pool gklt

   host 192.168.3.111 255.255.255.0

   client-identifier c485.086c.95a3

   client-name GordonLT

!

!

no ip domain lookup

ip name-server 8.8.8.8

ip ssh port 2001 rotary 1 10

ip ssh version 2

!

!

crypto pki trustpoint TP-self-signed-34143614546334

enrollment selfsigned

subject-name cn=IOS-Self-Signed-Certificate-3414616454334

revocation-check none

rsakeypair TP-self-signed-3414616334

!

!

crypto pki certificate chain TP-self-signed-3414645416334

certificate self-signed 01

  3082023D 308201A6 A0030201 02020101 300D0609 2A864886 F70D0101 04050030

  18B02F8A 46CA2E8C E36B5772 9AB346FB 4CBF99E3 27C026A9 2A40C91B AA8E4451

  8CA2E73A 183AFEF7 B60B7A8A 8A5D2257 85CBA305 195FCF58 81E39B57 EF232570 58

  quit

username gkonheiser privilege 15 password 7 0357560E335A5E333435F75191F5D40

!

!

!

!

!

interface FastEthernet0/0

description INTERNET CONNECTION

ip address xxx.xxx.xxx.xxx 255.xxx.255.xxx

ip nat outside

ip virtual-reassembly

ip route-cache flow

speed 100

full-duplex

!

interface FastEthernet0/1

no ip address

ip virtual-reassembly

speed 100

full-duplex

!

interface FastEthernet0/0/0

duplex full

speed 100

!

interface FastEthernet0/0/1

!

interface FastEthernet0/0/2

!

interface FastEthernet0/0/3

!

interface Vlan1

ip address 192.168.3.100 255.255.255.0

ip nat inside

ip virtual-reassembly

!

ip route 0.0.0.0 0.0.0.0 xxx.xxx.xxx.xxx

!

!

ip http server

ip http authentication local

ip http secure-server

ip http secure-port 4483

ip http timeout-policy idle 60 life 86400 requests 10000

ip nat inside source list 1 interface FastEthernet0/0 overload

ip nat inside source static tcp 192.168.3.111 11767 interface FastEthernet0/0 11767

ip nat inside source static tcp 192.168.3.6 14565 interface FastEthernet0/0 14565

ip nat inside source static tcp 192.168.3.43 26252 interface FastEthernet0/0 26252

!

access-list 1 remark Internet access list

access-list 1 permit 192.168.3.0 0.0.0.255

snmp-server community sdsdsdsd1 RW 60

snmp-server community publsdsdsd RO

snmp-server enable traps tty

!

!

!

!

control-plane

!

!

banner incoming ^C Unauthorized Access Prohibited  ^C

!

line con 0

password 7 xxxx71181B584D5C

line aux 0

line vty 0 4

session-timeout 180

password 7 xxxxxx54434B

login local

rotary 1

transport preferred ssh

transport input telnet

line vty 5

session-timeout 180

password 7 0100110D4818

login local

rotary 1

transport preferred ssh

transport input ssh

line vty 6 15

session-timeout 180

password 7

login local

rotary 1

transport preferred ssh

transport input ssh

line vty 16 807

session-timeout 180

password 7

login local

rotary 1

transport preferred ssh

transport input ssh

!

scheduler allocate 20000 1000

ntp clock-period 17178769

ntp update-calendar

ntp server 195.216.64.208 prefer

end

1 Accepted Solution

Accepted Solutions

cadet alain
VIP Alumni
VIP Alumni

Hi,

ip dhcp excluded-address 192.168.3.1 192.168.3.230

ip dhcp pool gklt

   host 192.168.3.111 255.255.255.0

  client-identifier c485.086c.95a3

1)you excluded 192.168.3.111 so it will never be allocated, your dhcp parent pool by the way will only be 24 addresses( from .231 to .254)

2) this is not a valid client-identifier, either you use

   -client-identifier 01c4.8508.6c95.a3

   -hardware-address  c485.086c.95a3

depending of output of sh ip dhcp binding | i 192.168.3.111 when using the parent pool and with the address not excluded of course.

is the vlan1 interface up/up? ---> sh ip int br | i Vlan  if not DHCP won't work.

Regards.

Alain

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Don't forget to rate helpful posts.

View solution in original post

2 Replies 2

cadet alain
VIP Alumni
VIP Alumni

Hi,

ip dhcp excluded-address 192.168.3.1 192.168.3.230

ip dhcp pool gklt

   host 192.168.3.111 255.255.255.0

  client-identifier c485.086c.95a3

1)you excluded 192.168.3.111 so it will never be allocated, your dhcp parent pool by the way will only be 24 addresses( from .231 to .254)

2) this is not a valid client-identifier, either you use

   -client-identifier 01c4.8508.6c95.a3

   -hardware-address  c485.086c.95a3

depending of output of sh ip dhcp binding | i 192.168.3.111 when using the parent pool and with the address not excluded of course.

is the vlan1 interface up/up? ---> sh ip int br | i Vlan  if not DHCP won't work.

Regards.

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.

OK thanks working now.

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