On 24/07/2003 at 18:54 Julian Anastasov wrote:

I now see, it is the so called "ARP Problem" in the IPVS
context, many real servers and one director sharing same virtual
IP:

http://www.linuxvirtualserver.org/

The most used feature for such setups:
http://www.ssi.bg/~ja/#hidden

Julian,

This would be another approach, configuring the IP address on the ethernet interface (ex. eth0:2) and not advertising or replying arp with the hidden patch.
However the usual approach is configuring the destination IP address on a loopback interface that does real "hiding" as it's no more in ethernet interface.

Dispatched mode:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1833/products_feature_guide09186a0080086f2b.html#2728293

As long as I know, Solaris 8 and Windows 2000 have no problems with the ARP Request, as they use the src IP address of the ethernet interface. But as I have seen in the RFC it seems that Cisco devices should reply to this ARP request without looking into the source ip address.

I will open a TAC case and see if they raise a bug.

Regards,
Carlos Velasco