DHCP no address pool errors

[asit1111990]

Hello Friends,

Our company has a customer which has following setup:

Host----Switch---Router

The router configured as DHCP server which has the following pool:

ip dhcp pool MGM
 host 192.168.1.7 255.255.255.0
 client-identifier abed:00f2:2212
 default-router 1.1.1.1

Now the host is connected to switch which is accss vlan. Also we have a helper IP configured which is reachable from Switch

The problem is host is unable to get IP address using DHCP . Its gets following errors

*Apr  2 04:27:09.115: DHCPD: client's VPN is .
*Apr  2 04:27:09.115: DHCPD: No option 125
*Apr  2 04:27:09.115: DHCPD: Sending notification of DISCOVER:
*Apr  2 04:27:09.115:   DHCPD: htype 1 chaddr abed:00f2:2212
*Apr  2 04:27:09.115:   DHCPD: remote id 020a0000ac10000101000000
*Apr  2 04:27:09.115:   DHCPD: circuit id 00000000
*Apr  2 04:27:09.115: DHCPD: DHCPDISCOVER received from client 0063.6973.636f.2d 61.6162.622e.6363.3030.2e36.3430.302d.4574.302f.30 through relay 1.1.1.1
*Apr  2 04:27:09.115: DHCPD: Seeing if there is an internally specified pool cla ss:
*Apr  2 04:27:09.115:   DHCPD: htype 1 chaddr abed:00f2:2212
*Apr  2 04:27:09.115:   DHCPD: remote id 020a0000ac10000101000000
*Apr  2 04:27:09.115:   DHCPD: circuit id 00000000
*Apr  2 04:27:09.115: DHCPD: there is no address pool for 1.1.1.1

Does somebody known what are those errors and why we get those ? Any solution on it

Any help is appreciated

Thank you!

[Julio E. Moisa]

Hi

The default-router is used to determine the gateway of the network, example:

default-router 192.168.1.1

also you could try:

ip dhcp pool TEST

host 192.168.1.7 255.255.255.0

hardware-address <mac address>

Hope it is useful.

[asit1111990]

Hello Julio,

Appreciate your quick reply.

The default-router is used to determine the gateway of the network

As per my understanding the purpose of default router is following:

If the DHCP packets comes in with relay address same as the default router it would come to known it would come to known which pool/host the address should be taken

Just wanted to known is it same when you say The default-router is used to determine the gateway of the network

I tried using the hardware-address <mac address> but same result.. still getting the logs.

Also i can see in the logs that no option 125 ?

What is option 125 and how do we enable it ?

Thank you

[Julio E. Moisa]

Hi

You are welcome, these links could be useful, I would like to know the purpose of the implementation, is it a dhcp reservation?

http://www.firewall.cx/cisco-technical-knowledgebase/cisco-routers/812-cisco-router-dhcp-config.html

https://supportforums.cisco.com/document/13140791/configure-option-125-server-allow-dynamic-host-configuration-protocol-dhcp-auto

about option 125

https://tools.ietf.org/html/rfc3925