From: Alexei Monastyrnyi (alexeim@orcsoftware.com)
Date: Mon Jul 02 2007 - 08:04:55 ART
Hi.
In your case I would see a call for DHCP manual binding (or probably
static mapping, if it is a real-life scenario).
HTH,
A.
on 7/2/2007 8:59 AM spduo wrote:
> Hi,
>
> Tahnks for the reply. In my case, there's no other client.. it is
> between R3 (dhcp server) and SW1 (dhcp client). I've attempted to clear
> the binding numerous times, R3 just does not assign 10.1.37.7 to SW1.
>
> Cheers.
>
>
> ----- Original Message ----- From: "Avner Izhar" <aizhar@ccbootcamp.com>
> To: "spduo" <frenzeus@streamyx.com>; "Cisco certification"
> <ccielab@groupstudy.com>
> Sent: Monday, July 02, 2007 7:42 AM
> Subject: RE: DHCP server Assigning Specific IP to client
>
>
>> Hi,
>>
>> Looks like there is some other client in the network who request the
>> ip faster
>> then the one you are configuring.
>>
>> You can try to find it by the mac address the will be displayed with
>> 'show ip
>> dhcp binding', or you can configure static binding by following the
>> instruction in here:
>> http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_feature_guide
>>
>> 09186a008027fa7c.html
>>
>> Please note that the mac address listed in the 'show ip dhcp binding'
>> will
>> start with two digit hardware type and then the actual mac address.
>>
>> -------------------------------------------
>> Regards,
>> Avner Izhar
>> Technical Instructor
>> CCIE #15999 (Voice)
>> Voice: (702) 968-5100
>> Fax: (702) 446-8012
>> E-mail: aizhar@ccbootcamp.com
>> Network Learning Inc - A Cisco Sponsored Organization(SO) YES! We take
>> Cisco
>> Learning credits!
>> Toll Free: 877-NLI-CCIE (877-654-2243)
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>> FAX: 702-446-8012
>>
>>
>> ________________________________
>>
>> From: nobody@groupstudy.com on behalf of spduo
>> Sent: Mon 7/2/2007 9:48 PM
>> To: Cisco certification
>> Subject: DHCP server Assigning Specific IP to client
>>
>>
>>
>> Hi all,
>>
>> An interface has been configured on a dhcp-client router to request
>> for IP
>> address via DHCP (ip address dhcp) under interface configuration mode.
>> A DHCP
>> server has been configured with a pool to purposefully assign a
>> specific IP
>> address to the client, i.e. 10.1.37.7. The following is what i've
>> configured
>> on the server-end in the dhcp-pool:
>>
>> ip dhcp excluded-address 10.1.37.1 10.1.37.6
>> ip dhcp excluded-address 10.1.37.8 10.1.37.254
>> !
>> ip dhcp pool DHCP_POOL
>> network 10.1.37.0 255.255.255.0
>> lease infinite
>> !
>> And i keep getting the following message prompt on the server-end. It
>> seems
>> the DISCOVER packet is received from the client, but server fails to
>> allocate..
>>
>> DHCPD: DHCPDISCOVER received from client
>> 0063.6973.636f.2d63.6330.362e.3038.6638.2e66.3130.302d.4469.31 on
>> interface
>> Virtual-Access2.1.
>> DHCPD: Allocate an address without class information (10.1.37.0)
>>
>> I noticed that on the server it has already assigned 10.1.37.7 - but
>> not to
>> the client, besides on this segment there're only 2 routers, R3 (dhcp
>> server)
>> and SW1 (dhcp client). Despite numerous attempts to clear the binding and
>> reload both routers, R3 still fails to assign 10.1.37.7 to SW1.
>>
>> However, if i remove the "ip dhcp excluded-address 10.1.37.1
>> 10.1.37.6", the
>> server-end router succesfully assigns 10.1.37.1 to the client - but i
>> want it
>> to assign 10.1.37.7. Am i missing anything here?
>>
>> Thanks in advance guys.
>>
>> Cheers,
>> -K
>>
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