Proxy ARP Timeouts
Date Posted: March 01, 2008 04:40 PM
Author: Mel Beckman
Dear Doctor, Our System i is in a secure collocation facility with redundant upstream Internet feeds connected to redundant firewalls. Between the firewalls and the System i are two Ethernet switches, one connected to each of the two System i Ethernet NICs. I'm trying to use the i5/OS Virtual IP Addressing feature to automatically fail over from one port to the other should any one of the firewalls, switches, or Ethernet NICs fail. To that end, I've configured NIC A on the System i with IP address 10.0.0.1 and NIC B with 10.0.0.2; the VIPA IP address is 10.0.0.3. Alas, when I test this by failing any one of the redundant components, failover doesn't seem to happen.

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