No subject

Fri Feb 17 00:23:59 UTC 2012

### THE SERVER BOOTED UP
May  1 13:16:24 2d2-dhcp-2-156-160 dhcpd: DHCPDISCOVER from 
00:07:e9:ea:a9:e1 via eth1
May  1 13:16:24 2d2-dhcp-2-156-160 dhcpd: DHCPOFFER on 192.168.1.1 to 
00:07:e9:ea:a9:e1 via eth1
May  1 13:16:24 2d2-dhcp-2-156-160 dhcpd: DHCPREQUEST for 192.168.1.1 
(192.168.100.100) from 00:07:e9:ea:a9:e1 via eth1
May  1 13:16:24 2d2-dhcp-2-156-160 dhcpd: DHCPACK on 192.168.1.1 to 
00:07:e9:ea:a9:e1 via eth1
### RENEWING THE LEASE AT ~ 1/2 LEASE TIME
May  1 13:17:51 2d2-dhcp-2-156-160 dhcpd: DHCPREQUEST for 192.168.1.1 from 
00:07:e9:ea:a9:e1 via eth1
May  1 13:17:51 2d2-dhcp-2-156-160 dhcpd: DHCPACK on 192.168.1.1 to 
00:07:e9:ea:a9:e1 via eth1
### RENEWING THE LEASE AT ~ 1/2 LEASE TIME
May  1 13:19:07 2d2-dhcp-2-156-160 dhcpd: DHCPREQUEST for 192.168.1.1 from 
00:07:e9:ea:a9:e1 via eth1
May  1 13:19:07 2d2-dhcp-2-156-160 dhcpd: DHCPACK on 192.168.1.1 to 
00:07:e9:ea:a9:e1 via eth1
### AT THIS POINT I SHUTDOWN THE SERVER UNTIL THE LEASE EXPIRED, THEN 
REBOOTED
### THE SERVER AGAIN
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Internet Software Consortium DHCP 
Server V3.0pl1
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Copyright 1995-2001 Internet 
Software Consortium.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: All rights reserved.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: For info, please visit 
http://www.isc.org/products/DHCP
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Internet Software Consortium DHCP 
Server V3.0pl1
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Copyright 1995-2001 Internet 
Software Consortium.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: All rights reserved.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: For info, please visit 
http://www.isc.org/products/DHCP
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Wrote 0 deleted host decls to 
leases file.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Wrote 0 new dynamic host decls to 
leases file.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Wrote 0 leases to leases file.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Wrote 0 deleted host decls to 
leases file.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Wrote 0 new dynamic host decls to 
leases file.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Wrote 0 leases to leases file.
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Listening on 
LPF/eth1/00:50:04:d1:40:63/192.168.100.0/24
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Sending on   
LPF/eth1/00:50:04:d1:40:63/192.168.100.0/24
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Sending on   
Socket/fallback/fallback-net
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Listening on 
LPF/eth1/00:50:04:d1:40:63/192.168.100.0/24
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Sending on   
LPF/eth1/00:50:04:d1:40:63/192.168.100.0/24
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: Sending on   
Socket/fallback/fallback-net
May  1 13:24:06 2d2-dhcp-2-156-160 dhcpd: dhcpd startup succeeded
May  1 13:24:38 2d2-dhcp-2-156-160 dhcpd: DHCPDISCOVER from 
00:07:e9:ea:a9:e1 via eth1
May  1 13:24:38 2d2-dhcp-2-156-160 dhcpd: DHCPOFFER on 192.168.1.1 to 
00:07:e9:ea:a9:e1 via eth1
May  1 13:24:38 2d2-dhcp-2-156-160 dhcpd: DHCPREQUEST for 192.168.1.1 
(192.168.100.100) from 00:07:e9:ea:a9:e1 via eth1
May  1 13:24:38 2d2-dhcp-2-156-160 dhcpd: DHCPACK on 192.168.1.1 to 
00:07:e9:ea:a9:e1 via eth1
May  1 13:25:50 2d2-dhcp-2-156-160 dhcpd: DHCPREQUEST for 192.168.1.1 from 
00:07:e9:ea:a9:e1 via eth1
May  1 13:25:50 2d2-dhcp-2-156-160 dhcpd: DHCPACK on 192.168.1.1 to 
00:07:e9:ea:a9:e1 via eth1

On the client side, I am looking at the network traffic with ethereal.  I 
see the corresponding DHCPREQUEST and DHCPACK messages.  Then the server is 
shut down.  About the time the lease expires, I get a message in ethereal 
that the network is down.  When the server boots up, in the messages file it 
appears the my client has got its address again but I can't ping the client. 
  I can't get to the client until I do a '/sbin/dhclient eth0'.

Is there a way for the client to automatically gets it IP rather than have 
user interaction?

>From: Douglas Armstrong <doug at ovationdata.com>
>Reply-To: dhcp-users at isc.org
>To: dhcp-users at isc.org
>Subject: Re: Server Down - How should Client Act?
>Date: Mon, 01 May 2006 09:47:26 -0500
>
>Melody Helt wrote:
> > I have my default lease set up for 3 mins for experimentation.  I am 
>giving
> > out a static IP based on MAC address.
> >
> > My server does down.  Using ethereal to watch the network traffic, I see
> > that at about 1/2 the time of the lease, the client sends out a 
>DHCPREQUEST
> > message then 5 seconds later sends out another DHCPREQUEST.  Nothing 
>else
> > happens.
> >
> > After the lease time expires, the server starts up again.  No 
>communication
> > occurs between client & server.  The client has to be rebooted in order 
>for
> > it to communicate & get an IP from the server.
> >
> > From reading on the internet, I thought that once the lease expired, the
> > client would keep broadcasting a message trying to find a host.  This
> > doesn't seem to be the case in my experiment.  Should the client keep
> > broadcasting?
> >
> > In this situation, is there anyway to get the client & server to 
>communicate
> > without having to reboot the client?
> >
> > Regards & Thanks!
> > GHJ
> >
> > _________________________________________________________________
> > Don’t just search. Find. Check out the new MSN Search!
> > http://search.msn.click-url.com/go/onm00200636ave/direct/01/
> >
> >
> >
>What are the relevant log entries on the server, and on the client.
>
>Doug Armstrong
>

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