From: Joselito Nunez (jonucas@yahoo.com)
Date: Sat Nov 18 2006 - 06:52:24 ART
Hi>
to identify client-id
use debug ip dhcp server packet
regards
Jose
--- srdja blagojevic <srdja1@pexim.co.yu> escribis:
> Kal,
>
> you should not exclude 172.16.1.100 from DHCP pool.
>
> Also, you should identify your client PC with
> Client-id, not with hardware
> address. AFAIK hardware address identification works
> only with Cisco
> clients, with others you should use client-id.
>
> You can get client-id from mac address by just
> adding 01 in front of the mac
> address:
>
> MAC: 00a0.c981.bd9c => Client-id: 0100.a0c9.81bd.9c
>
> You can also verify that your client is identified
> by this client-id, from
> this line of your debug output:
>
> >Nov 20 00:44:03.534: DHCPD: DHCPREQUEST received
> from client
> 0100.a0c9.81bd.9c.
>
> hth,
> Srdja
>
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of Kal
> Han
> Sent: Saturday, November 18, 2006 02:09
> To: Groupstudy; Cisco certification
> Subject: DHCP question - manual binding
>
> Hi
> I want to create a dhcp pool and assign IPs from
> that pool.
> But there is a server known by a name, for which I
> want to assign the same
> IP everytime. ( which ever host machine is
> configured with that name, after
> it reboots, that machine should get a specific IP )
>
> eg,.
> server name: filter-test8 ( mac-add = 00a0.c981.bd91
> ) <--- this host
> desired IP: 172.16.1.100
> <---
> this IP.
>
> I tried to get this working but couldnt .. so far.
> Here is my config.
>
> ip dhcp excluded-address 172.16.1.1
> ip dhcp excluded-address 172.16.1.12
> ip dhcp excluded-address 172.16.1.100 <--------
> should I exclude from the
> pool ???
> !
> ip dhcp pool LAB5 <------------------only for the
> sake of this server
> host 172.16.1.100 255.255.255.0
> hardware-address 00a0.c981.bd91 ieee802
> client-name filter-test8
> default-router 172.16.1.1
> !
> ip dhcp pool ALL <----------------- my whole pool
> import all
> network 172.16.1.0 255.255.255.0
> default-router 172.16.1.1
> !
>
> when I do the show IP dhcp bindings, I see ( looks
> correct ) Bindings from
> all pools not associated with VRF:
> IP address Client-ID/ Lease
> expiration Type
> Hardware address/
> User name
> 172.16.1.100 00a0.c981.bd91 Infinite
> Manual
>
> *but when I reboot this pc, I am getting addresses
> from the pool* *(
> 172.16.1.2 to start with )*
> **
>
> my debug on the router shows some thing like this If
> you look at the bold
> MAC address, I dont know what that is and where its
> coming from. the host
> that requesting this should have a mac of
> 00a0.c981.bd91 ( which I
> configured above )
>
> Nov 20 00:43:52.470: DHCPD: checking for expired
> leases.
> R2#
> Nov 20 00:44:01.526: DHCPD: DHCPDISCOVER received
> from client *
> 0100.a0c9.81bd.9c* on interface FastEthernet0/1.
> R2#
> Nov 20 00:44:03.530: DHCPD: assigned IP address
> 172.16.1.3 to client *
> 0100.a0c9.81bd.9c*.
> Nov 20 00:44:03.530: DHCPD: Sending DHCPOFFER to
> client *0100.a0c9.81bd.9c*(
> 172.16.1.3).
> Nov 20 00:44:03.530: DHCPD: creating ARP entry
> (172.16.1.3, *00a0.c981.bd9c*
> ).
> Nov 20 00:44:03.530: DHCPD: unicasting BOOTREPLY to
> client 00a0.c981.bd9c (
> 172.16.1.3).
> Nov 20 00:44:03.534: DHCPD: DHCPREQUEST received
> from client
> 0100.a0c9.81bd.9c.
> Nov 20 00:44:03.534: DHCPD: Sending DHCPACK to
> client 0100.a0c9.81bd.9c (
> 172.16.1.3).
> Nov 20 00:44:03.534: DHCPD: creating ARP entry
> (172.16.1.3, 00a0.c981.bd9c).
> Nov 20 00:44:03.534: DHCPD: unicasting BOOTREPLY to
> client 00a0.c981.bd9c (
> 172.16.1.3).
>
>
> Please let me know whats wrong
>
> Thanks
> Kal
>
>
This archive was generated by hypermail 2.1.4 : Fri Dec 01 2006 - 08:05:47 ART