Linux: ARP cache issues with Red Hat "balance-alb (mode 6)" bonding driver (Doc ID 756259.1)

Last updated on NOVEMBER 08, 2012

Applies to:

Oracle Server - Enterprise Edition - Version 10.1.0.2 to 11.2.0.4 [Release 10.1 to 11.2]
Linux x86-64
Linux x86
Oracle Server Enterprise Edition - Version: 10.1.0.2.0 to 11.2.0.4
Oracle Clusterware when using bonding on Public network
Oracle Clusterware when using bonding on Private network


Symptoms

When using "balance-alb (mode 6)" bonding driver in an Oracle Clusterware setup, if the VIP fails over to another node, the ping requests for the relocated VIP fail unless the ARP cache is manually cleared.  If "balance-alb (mode 6)" is used with 11.2.0.2 HAIP similar conditions can occur which will result in instance evictions.

This causes sessions to hang as the session retries to connect to the VIP but it is unsuccessful due to the stale ARP cache entries.

Cause

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