From: Scott Morris (swm@emanon.com)
Date: Sat Sep 20 2008 - 16:09:18 ART
While the two are generally related to each other, it's important to know
what the RFC says! :)
According to the spec for DHCP, if the client-id is presented, then the
match MUST be against this and not the MAC address.
So if you are trying to use DHCP to manually reserve/assign an address for a
Cisco device, you can match the mac all you want, it ain't gonna happen!
(that's a technical phrase)
If you search the archives, there were some long discussions of this about a
year or so ago, and some output from "debug ip dhcp server packet" as well.
HTH,
Scott Morris, CCIE4 #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al.
CCSI/JNCI-M/JNCI-ER
Senior CCIE Instructor
smorris@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Outside US: 775-826-4344
Knowledge is power.
Power corrupts.
Study hard and be Eeeeviiiil......
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Sachin D
Sent: Saturday, September 20, 2008 11:44 AM
To: ccielab@groupstudy.com
Subject: DHCP Query
Hi,
I am going through the cisco documentation for DHCP configuration. I have a
doubt about the manual bindings of the IP to a mac address.
In Cisco Documentation I saw below command to configure manual binding which
is a required command, where (client identifier = formed by concatenating
the media type and the MAC address.)
*client-identifier **unique-identifier
*When do we use* **hardware-address **hardware-address type
are both command one and the same ?
i have seen only hardware-address is a used at places but no
client-identifier
Regards
*
Blogs and organic groups at http://www.ccie.net
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