DHCP Failover recovery......

li jun li-jun-a at hdsc.hitachi-displays.com
Mon Aug 4 00:54:00 UTC 2008


 I don't know exactly the factor that affects the recovering process.May be the recovery time is depend on the number of the clients.and in my company,there are about 500 PCs,and the recovering process costs 15min.
  By the way,who can tell me the factors?
 

--------------------- 
LIJUN 
IS DEPARTMENT 
HITACHI DISPLAYS DEVICES(SUZHOU) 
CN 

 


  _____  

From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On Behalf Of Luis Fernando Lacayo
Sent: Friday, August 01, 2008 9:13 PM
To: dhcp-users at isc.org
Subject: RE: DHCP Failover recovery......


Thanks for the words of encouragement.  I have let it run from an hour, and my customers are crying blood murder. 

Does anyone have any idea of how long it will take to recover 125K leases.

Thanks, 

Luis

On Fri, 2008-08-01 at 08:18 +0800, li jun wrote:


 

Don't worrry,Just wait serveral more minutes,because the recovering process costs some time. 


--------------------- 
LIJUN 
IS DEPARTMENT 
HITACHI DISPLAYS DEVICES(SUZHOU) 
CN 




  _____  


From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On Behalf Of Luis Fernando Lacayo
Sent: Friday, August 01, 2008 3:24 AM
To: dhcp-users at isc.org
Subject: DHCP Failover recovery......





 
a few weeks ago I posted a message about a problem that I 

encountered.  I had a two server dhcp redundant/failover setup and I 

deleted the dhcp.leases(~) files as I did not have enough room to 

save them. ( I know a very stupid thing to do. no excuses).



I have been running on a single (with none failover) dhcp server and 

want to return to a two server configuration. I am not doing DDNS, 

so I don't have to worry about that now.  The problem is that when I 

restart both servers they STOP offering IP addresses, and I see a 

lot of recovering messages on the logs.

When I start the servers, the logs show the following:Jul 28 07:56:36 D4FWWC1 dhcpd: Sending on   LPF/eth0/00:15:c5:fe:57:bd/10.129.177/24
Jul 28 07:56:36 D4FWWC1 dhcpd: Listening on LPF/eth0/00:15:c5:fe:57:bd/10.129.177/24
Jul 28 07:56:36 D4FWWC1 dhcpd: Sending on   Socket/fallback/fallback-net
Jul 28 07:56:36 D4FWWC1 dhcpd: Sending on   LPF/eth0/00:15:c5:fe:57:bd/10.129.177/24
Jul 28 07:56:36 D4FWWC1 dhcpd: failover peer co-wan03: I move from recover to startup
Jul 28 07:56:36 D4FWWC1 dhcpd: Sending on   Socket/fallback/fallback-net
Jul 28 07:56:37 D4FWWC1 dhcpd: failover peer co-wan03: I move from recover to startup
Jul 28 07:56:37 D4FWWC1 dhcpd: dhcpd startup succeeded

skip a few lines and I see the same message for most of the subnets on the dhcpd.conf file. 
DHCPREQUEST for 10.129.77.204 from 00:12:3f:08:0d:e3 via 10.129.76.3: not responding (recovering).



Thanks, 



Luis




-- 

Luis Fernando Lacayo

Chicago Public Schools

Senior Unix Administrator

ITS/ UNIX Infrastructure

Office: 773-553-3835

Cell: 773-203-4493




  _____  


Disclaimer: The contents of this e-mail, and its attachments, if any, are confidential and may be protected by law against any unauthorized use. If you have received this e-mail by mistake or have reason to believe that you are not the intended recipient, please notify the sender by reply e-mail as soon as possible and delete it from your computer system immediately thereafter. If you are not the intended recipient, you must not copy this e-mail or attachment or disclose the contents to any other person. While we have made every effort to keep our network virus free, we take no responsibility for any computer virus which might be transferred by way of this e-mail. 
  _____  






-- 

Luis Fernando Lacayo

Chicago Public Schools

Senior Unix Administrator

ITS/ UNIX Infrastructure

Office: 773-553-3835

Cell: 773-203-4493


Disclaimer:
The contents of this e-mail, and its attachments, if any, are confidential and may be protected
by law against any unauthorized use.  If you have received this e-mail by mistake or have
reason to believe that you are not the intended recipient, please notify the sender by reply
e-mail as soon as possible and delete it from your computer system immediately thereafter.
If you are not the intended recipient, you must not copy this e-mail or attachment or disclose
the contents to any other person.  While we have made every effort to keep our network virus free,
we take no responsibility for any computer virus which might be transferred by way of this e-mail.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/dhcp-users/attachments/20080804/ab3a2171/attachment.html>


More information about the dhcp-users mailing list