From: Mike Kraus \(mikraus\) (mikraus@cisco.com)
Date: Tue Jul 10 2007 - 22:42:19 ART
Ack, resorting to reading RFCs again! :D
It does answer my question though:
"This proposal allows host configuration to be split between two
different address servers, potentially under different
administration."
So, if you had some crazy reason to, you could have the first DHCP
server assign IP information and the second some other DHCP option
information.
Thanks for pointing me in the right direction Antonio!
-----Original Message-----
From: Antonio Soares [mailto:amsoares@netcabo.pt]
Sent: Tuesday, July 10, 2007 8:15 PM
To: Mike Kraus (mikraus); eric_dobyns@yahoo.com; 'Chamara Peris'; 'Cisco
certification'
Subject: RE: DHCP option
Found this:
DHCP Next Server Option
http://tools.ietf.org/id/draft-ietf-dhc-nextserver-02.txt
I think the command is there but actually it doesn't do anything for
you. At least with a cisco router as a dhcp client.
-----Original Message-----
From: Mike Kraus (mikraus) [mailto:mikraus@cisco.com]
Sent: quarta-feira, 11 de Julho de 2007 1:25
To: eric_dobyns@yahoo.com; Antonio Soares; Chamara Peris; Cisco
certification
Subject: RE: DHCP option
OK, but you can specify multiple TFTP servers with option 150 as well...
-----Original Message-----
From: Eric Dobyns [mailto:eric_dobyns@yahoo.com]
Sent: Tuesday, July 10, 2007 6:59 PM
To: Mike Kraus (mikraus); 'Antonio Soares'; 'Chamara Peris'; 'Cisco
certification'
Subject: RE: DHCP option
If nobody is home at the primary tftp server's address (or it is down or
too busy to respond), it goes to the next-server and then the
next....redundancy.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Mike Kraus (mikraus)
Sent: Tuesday, July 10, 2007 6:22 PM
To: Antonio Soares; Chamara Peris; Cisco certification
Subject: RE: DHCP option
On a somewhat related note, does anyone know a use for next-server?
From the command reference: "Specifies the IP address of the next
server in the boot process, which is typically a Trivial File Transfer
Protocol (TFTP) server. One IP address is required, but up to eight
addresses can be specified in one command line."
I know this doesn't work with IP phones, is this for PXE booting or
something?
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Antonio Soares
Sent: Tuesday, July 10, 2007 5:08 PM
To: 'Chamara Peris'; 'Cisco certification'
Subject: RE: DHCP option
Option 66 is for TFTP Server Name.
Try to use option 150 instead.
http://www.iana.org/assignments/bootp-dhcp-parameters
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Chamara Peris
Sent: terga-feira, 10 de Julho de 2007 22:59
To: Cisco certification
Subject: DHCP option
Hi Group,
I have configured a dhcp server in cisco 2950 with option 66 with the
tftp server ip address. But non of my cisco 7960 phones picking up the
tftp server via dhcp. They all get other information corretly via dhcp
server.
What I am doing wrong?
Cheers,
CP
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