Load balancing Issue

Bob Harold rharolde at umich.edu
Tue Nov 25 15:06:15 UTC 2014


Make sure that both servers are seeing all the discover packets - both must
be in any DHCP forwarding configurations.  Note that DHCP failover is not
'primary unless it fails', but they each share half the IP's if both are
working.



-- 
Bob Harold
hostmaster, UMnet, ITcom
Information and Technology Services (ITS)
rharolde at umich.edu
734-647-6524 desk

On Tue, Nov 25, 2014 at 4:13 AM, Waqas Asghar <waqas.asghar at aol.com> wrote:

> Hi
>
>  I am using ISC dhcp servers in active/backup config with the following
> config:
>
>  primary; # declare this to be the primary server
>   address 10.1.69.30;
>   port 647;
>   peer address 10.1.69.31;
>   peer port 847;
>   max-response-delay 60;
>   max-unacked-updates 10;
>   load balance max seconds 3;
>   mclt 600;
>   split 255;
> }
>
>
>  However for some small number of hosts I have observed that a message as
> show below is observed and such devices fail to get an IP address,no logs
> for such devices are observed in the backup DHCP server neither,however if
> a static IP is assigned to such a device or if the backup server is shut
> the device gets an IP address.
>
>  Nov 25 14:11:03 isb-dcn-dhcp-1 dhcpd: [ID 702911 local7.debug]
> DHCPDISCOVER from b0:b2:dc:c6:82:eb via 175.110.144.1: load balance to
> peer dhcp
>
> *Regards,*
> *Waqas Asghar*
> *+923335495619 <%2B923335495619>*
>
> _______________________________________________
> dhcp-users mailing list
> dhcp-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
>
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