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On Mon, 2002-08-05 at 02:16, Martijn Klingens wrote:
>
> I don't think a reply packet from a real server's VIP will generate ARP
> traffic. The original ARP request is answered by the directord and the
> realserver is not supposed to answer to any ARP request.
It doesn't, that's not the potential problem. The problem is *dynamic*
ARP caching on the part of the router, where it puts IP/MAC pairs it
sees into its ARP cache, WITHOUT ever receiving an explicit ARP for it.
However, from what I have seen, it would appear that the person who told
me this is misinformed. I set up an LVS with DR, and it seems to be
working fine. I have not seen the real server's MAC address appear in
the router's ARP cache for the VIP yet. On the other hand, there have
been only a few test connections so far, I have not gone production. So
I will have to keep an eye on this.
--Greg
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