Alias IP

Gene Rackow rackow at mcs.anl.gov
Mon Nov 20 14:42:29 UTC 2006



-----Original Message-----
From: "Zachár Balázs" <zachar at direkt-kfki.hu>
To: dhcp-users at isc.org
Sent: 11/20/06 8:11 AM
Subject: Alias IP

Hello @list!

I have the following problem:

active/passive cluster with one virtual IP address...

A node real IP: 192.168.1.2
B node real IP: 192.168.1.3
virtual common IP: 192.168.1.5

So I have an alias IP address in my interface. The dhcp requests come to 
the alias IP (192.168.1.5) but the offers going out on the real 
interface IP (e.g. 192.168.1.2).
Maybe the problem:
If I give an IP with my real interface, and before the client would like 
to renew his IP address the cluster is failover, the dhcpd's IP address 
will change... But if I send the offers trough the alias interface, If 
the cluster fail over the IP address is still the same (the virtual IP)...

Can I send the offers with my alias interface?





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