DHCP manual Binding

catalinu

hello all,

Topology R2 fa0/0 - fa0/0 R3
R2#sh ip int b
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 172.16.23.2 YES manual up up
Serial1/0 172.16.12.2 YES manual up up
Loopback2 172.16.2.1 YES manual up up
R3#sh ip int br
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES DHCP up up
R2#sh run | sec dhcp
no ip dhcp use vrf connected
ip dhcp excluded-address 172.16.23.1
ip dhcp excluded-address 172.16.23.3
ip dhcp pool dhcp23
host 172.16.23.23 255.255.255.0
hardware-address cc02.08e8.0000 ieee802
domain-name dhcp23.com
dns-server 192.231.236.30
default-router 172.16.23.2
client-name R3
lease 0 0 3

R3#sh int fa0/0
FastEthernet0/0 is up, line protocol is up
Hardware is AmdFE, address is cc02.08e8.0000 (bia cc02.08e8.0000)
Internet address will be negotiated using DHCP

Guide: Cisco IOS IP Configuration Guide, Release 12.2 - Configuring DHCP - Cisco Systems

any ideas why this isn't working ?

thanks

mikem2te

catalinu wrote: »

hello all,

Topology R2 fa0/0 - fa0/0 R3
R2#sh ip int b
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 172.16.23.2 YES manual up up
Serial1/0 172.16.12.2 YES manual up up
Loopback2 172.16.2.1 YES manual up up
R3#sh ip int br
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES DHCP up up
R2#sh run | sec dhcp
no ip dhcp use vrf connected
ip dhcp excluded-address 172.16.23.1
ip dhcp excluded-address 172.16.23.3
ip dhcp pool dhcp23
host 172.16.23.23 255.255.255.0
hardware-address cc02.08e8.0000 ieee802
domain-name dhcp23.com
dns-server 192.231.236.30
default-router 172.16.23.2
client-name R3
lease 0 0 3

R3#sh int fa0/0
FastEthernet0/0 is up, line protocol is up
Hardware is AmdFE, address is cc02.08e8.0000 (bia cc02.08e8.0000)
Internet address will be negotiated using DHCP

Guide: Cisco IOS IP Configuration*Guide, Release*12.2 - Configuring DHCP - Cisco Systems

any ideas why this isn't working ?

thanks

The cisco link you are using is for IOS 12.2, does that match your routers IOS version?

I looked up the 12.4 guide and it states-

All DHCP clients send a client identifier (DHCP option 61) in the DHCP packet. To configure manual bindings, you must enter the client-identifier DHCP pool configuration command with the appropriate hexadecimal values identifying the DHCP client.

I've tried it on my rig and it works ok, my pool is-

ip dhcp pool F1
   host 192.168.1.101 255.255.255.0
   client-identifier 0100.1150.6b8f.bb
   domain-name XXXXXX
   dns-server 10.20.0.220
   default-router 192.168.1.1
!