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I see.
Then how about the case when servers have multiple NIC with different subnet ?
Does it send ARP reply for each segment ?
The test result from tcpdump make me confused, cause it didn't show any ARP
packets.
Another thing is that IP takeover took place immediatly when I stoped heartbeat
of primary
while it took much time when I disconnected all the network connections of
primary.
What's the difference ?
----- Original Message -----
From: "Lars Marowsky-Bree" <lmb@xxxxxxx>
To: "???" <conan@xxxxxxxxxxxxxxxxxxx>
Cc: <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Tuesday, July 11, 2000 4:04 PM
Subject: Re: question about heartbeat
> On 2000-07-11T15:49:07,
> ??? <conan@xxxxxxxxxxxxxxxxxxx> said:
>
> > I wonder the mechanism of IP takeover.
> > How the packets find secondary when primary is dead ?
> > I know that secondary takes the IP (which may called VIP) of the primary.
> > And what next ?
> > Is ARP broadcasted by secondary ? Is it done automatically or done by
> > heartbeat ?
>
> Yes. The system sends out an unsolicited ARP reply and the other hosts on the
> same ethernet segment update their arp caches.
>
> Sincerely,
> Lars Marowsky-Brée <lmb@xxxxxxx>
> Development HA
>
> --
> Perfection is our goal, excellence will be tolerated. -- J. Yahl
>
>
>
>
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