From: Anthony Pace (anthonypace@xxxxxxxxxxx)
Date: Tue Jul 23 2002 - 00:17:09 GMT-3
Another thing to consider about the 2 DHCP servers with mutually
exclusive address rages is that they are truly fault tollerant as they
are not communicating or depending on each other for any thing. Any
DHCP solutions where the two need to "share" ranges or communicate run
the risk of having that process "break down"
Anthony Pace
On Mon, 22 Jul 2002 12:55:47 +0200, "Andri Bersvendsen"
<an-bersv@online.no> said:
> This is how the DHCP database stored on the TFTP server looks like.
> This sample is from my network at home and it have two routers that is
> set up as DHCP servers.
>
> *time* Jul 22 2002 11:36 AM
> *version* 1
> !IP address Type Hardware address Lease expiration
> 192.168.13.101 id 0100.d0ba.846a.4e Jul 23 2002 08:25 PM
> 192.168.13.103 id 0100.50da.5a39.6f Jul 24 2002 11:32 AM
> 192.168.13.116 id 0100.3080.62ab.b7 Jul 23 2002 08:25 PM
> 192.168.13.124 id 0100.40d0.1432.26 Jul 22 2002 09:42 PM
> 192.168.13.125 id 0100.3080.62ab.19 Jul 23 2002 10:02 PM
>
>
> !IP address Interface-index Lease expiration Server IP
> address Vrf
> *end*
>
>
>
> >This looks like it could be troublesome; like if to routers respond at the
> >same time with the same address, which one will go into the database?
> >
> >I'd stick to the split subnet solutions others provided. That's the
> >standard way to do it in the industry until the DHCP spec is updated and
> >standardized.
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> >Andre Bersvendsen
> >Sent: Sunday, July 21, 2002 8:11 AM
> >To: Mike Thompson; ccielab@groupstudy.com
> >Subject: Re: DHCP back up
> >
> >
> >Hi,
> >
> >Set up both of the routers with identical DHCP configuration and use a
> >TFTP server to store the "DHCP database".
> >The TFTP server can be set up on one or both of the routers. I use a
> >TFTP server on a SUN machine.
> >
> >My DHCP configuration:
> >
> >!
> >ip dhcp database tftp://192.168.13.70/dhcp-database-FRONTLAN
> >ip dhcp excluded-address 192.168.13.0 192.168.13.100
> >!
> >ip dhcp pool FRONTLAN
> > network 192.168.13.0 255.255.255.0
> > default-router 192.168.13.1
> > dns-server 130.67.15.194 130.67.60.70 62.148.39.11 62.148.39.10
> >193.212.1.11 193.212.1.10
> > domain-name online.no
> > option 150 ip 192.168.13.1
> > lease 2
> >!
> >
> >
> >
> >>Hi,
> >>I'm trying to configure 2 routers has a primary and secondary DHCP. I
> >>mean is the primary is down the secondary will be the DHCP server. I
> >>tried the cisco website I couldn't find much
> >>
> >>Can anyone help me out?
> >>
> >>Thanks in advanced.
> >>Mike
> >>
> >>
> >>
This archive was generated by hypermail 2.1.4 : Sat Sep 07 2002 - 19:36:39 GMT-3