Client unable to get DHCP IP from 871W

[lily.chang]

Hi,

I am playing around with an 871W router and have setup a local dhcp pool:

ip dhcp pool LAN_DHCP

     import all

     network 10.10.10.0 255.255.255.0

     default-router 10.10.10.1

The laptop connected to it isn't able to receive an IP.

Here is what I am seeing in the logs:

*Feb 28 21:19:16.963 CST: DHCPD: Sending notification of DISCOVER:
*Feb 28 21:19:16.963 CST:   DHCPD: htype 1 chaddr 001d.0937.a90d
*Feb 28 21:19:16.963 CST:   DHCPD: remote id 020a00000a190001f1000000
*Feb 28 21:19:16.963 CST:   DHCPD: circuit id 00000000
*Feb 28 21:19:16.963 CST: DHCPD: DHCPDISCOVER received from client 0100.1d09.37a9.0d on interface BVI1.
*Feb 28 21:19:16.963 CST: DHCPD: Seeing if there is an internally specified pool class:
*Feb 28 21:19:16.963 CST:   DHCPD: htype 1 chaddr 001d.0937.a90d
*Feb 28 21:19:16.963 CST:   DHCPD: remote id 020a00000a190001f1000000
*Feb 28 21:19:16.963 CST:   DHCPD: circuit id 00000000
*Feb 28 21:19:16.963 CST: DHCPD: Allocate an address without class information (10.10.10.0)
*Feb 28 21:19:16.963 CST: DHCPD: subnet [10.10.10.1,10.10.10.254] in address pool LAN_DHCP is empty.
*Feb 28 21:19:16.963 CST: DHCPD: Sending notification of ASSIGNMENT FAILURE:
*Feb 28 21:19:16.963 CST:   DHCPD: htype 1 chaddr 001d.0937.a90d
*Feb 28 21:19:16.963 CST:   DHCPD: remote id 020a00000a190001f1000000
*Feb 28 21:19:16.963 CST:   DHCPD: circuit id 00000000
*Feb 28 21:19:16.963 CST: DHCPD: Sending notification of ASSIGNMENT_FAILURE:
*Feb 28 21:19:16.963 CST:  DHCPD: due to: POOL EXHAUSTED
*Feb 28 21:19:16.963 CST:   DHCPD: htype 1 chaddr 001d.0937.a90d
*Feb 28 21:19:16.963 CST:   DHCPD: remote id 020a00000a190001f1000000
*Feb 28 21:19:16.963 CST:   DHCPD: circuit id 00000000

There is only my laptop connected to it and it's not connected to the Internet.

Any assistance would be appreciated!

Thanks,

Lily

[Jerry Ye · Accepted solution]

Change your config to the following and try again

ip dhcp excluded-address 10.10.10.1 10.10.10.X
ip dhcp smart-relay

!

ip dhcp pool LAN_DHCP

     network  10.10.10.0 255.255.255.0

     default-router 10.10.10.1

!

Regards,

jerry

[lily.chang]

Hi Jerry,

That worked!! Thanks much!!

Regards,

Lily

[Mehdi Talei]

Hello,

Adding the line fixes the issue, but why that happens at all!

There should be a bug somewhere that there are plenty of IP addresses available and the router is not able to attribute any! I can't find the bug on Cisco website though!