I've setup a FAS3270 and want to test the failover to make sure it works. Here's what I do
1) Make sure HA is enabled on both controllers
2) Verify that the interface group (ifgrp0) is in shared mode for both controllers
3) Start a continuous ping of both interface groups IP addresses
4) From the CLI run cf takeover on the first controller
5) Using SP watch the two controllers as they gracefully fail over and the one being taken over reboots
6) Once the rebooted controller reboots and is in the waiting giveback state run the cf giveback -f command
7) Watch the controllers transfer control to the other controller
😎 Repeat using the other controller
What I'm seeing however doesn't convince me that HA is actually working. In step 5, I also watch the continuous pings, and basically from the time the taken over controller is taken over till the time the giveback is completed I see the pings to the IP address timing out. It's my understanding that the other controller should assume the IP address of the failed controller when in shared mode. If I can't ping it, then I can't access it, so how is this HA?
Both controllers have ifgrp0, on the same vlan, with separate IP Addresses 10.5.141.21 and 10.5.141.22
Am I missing something? If so, what?