Multi IP assign for single MAC-Urgent

[arun.sasi1 at wipro.com]

Dear Brad,

I have implemented the below please check was this correct configuration
.... Some times this is not working....

subnet XXX.XXX.39.128 netmask 255.255.255.128 {
        ddns-updates on;
class "ras-clients" {
        match if substring (option dhcp-client-identifier, 1, 4) =
"RAS";
ignore booting ;
}
        ddns-domainname "emb.slb.com";
        server-name "xxxxembinf01";
        max-lease-time 86400;
        default-lease-time 86400;
        option routers XXX.XXX.39.254;
        option netbios-name-servers XXX.XXX.243.102;
        option domain-name-servers XXX.XXX.243.100 , XXX.XXX.243.69 ,
134.32.44.38;
        # server-name "xxxxembinf01";
        authoritative;
        # ddns-domainname "emb.slb.com";
        pool {
                ddns-updates on;
                ddns-domainname "emb.slb.com";
                range dynamic-bootp XXX.XXX.39.130 XXX.XXX.39.153;
                range dynamic-bootp XXX.XXX.39.154 XXX.XXX.39.167;
                range dynamic-bootp XXX.XXX.39.168 XXX.XXX.39.174;
                range dynamic-bootp XXX.XXX.39.175 XXX.XXX.39.177;
                range dynamic-bootp XXX.XXX.39.178 XXX.XXX.39.187;
                range dynamic-bootp XXX.XXX.39.190 XXX.XXX.39.248;
                }
        }

Thanks
-Arun

-----Original Message-----
From: dhcp-users-bounces+arun.sasi1=wipro.com at lists.isc.org
[mailto:dhcp-users-bounces+arun.sasi1=wipro.com at lists.isc.org] On Behalf
Of Simon Hobson
Sent: Wednesday, January 05, 2011 12:54 AM
To: Users of ISC DHCP
Subject: RE: Multi IP assign for single MAC-Urgent

Brad Bendily wrote:

>So, I used this syntax:
>
>  if substring (client-id,1,4) = "RAC " {
>        ignore booting;
>  }
>
>but, it doesn't seem to have made any effect on the usage of addresses.
>I read through the man pages, but I just don't really get it.
>What does the "client-id,1,4" part mean, and does that need to be
>changed to make this work for me?

man dhcp-eval

>Alternatively, is there a better way to block or deny these devices?
>I have tried statically assigning them addresses, but that doesn't
work.
>The MAC is very strange and I'm pretty sure we don't have any
"token-ring"
>devices on the network.

Try searching the logs for those devices, it will probably give you more
clues.

-- 
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.
_______________________________________________
dhcp-users mailing list
dhcp-users at lists.isc.org
https://lists.isc.org/mailman/listinfo/dhcp-users

Please do not print this email unless it is absolutely necessary. 

The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. 

WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. 

www.wipro.com