Ping'ing HAIP but not physical private IP hesitates

Nov 5, 2020 8:06PM

2-node 11.2.0.4 RAC. Ping'ing from one node to the physical private IP of the partner node is good:

$ for i in {1..10}; do ssh 10.21.65.99 date; done

Sun Oct 18 13:26:50 CDT 2020

Sun Oct 18 13:26:51 CDT 2020

But quite often, ping'ing from node A to the HAIP (link local IP, the one 169.254.*.*) pauses for a subsecond up to 2 seconds for each ping:

$ for i in {1..10}; do ssh 169.254.41.235 date; done

Sun Oct 18 13:26:24 CDT 2020

Sun Oct 18 13:26:26 CDT 2020

Sun Oct 18 13:26:28 CDT 2020

Sun Oct 18 13:26:29 CDT 2020

Sun Oct 18 13:26:31 CDT 2020

Database - RAC/Scalability (MOSC)