"ib0: Found gid with mismach lids.(cache:x,from arp: y)" Messages Reported on BDA OL5 Clusters (Doc ID 2195652.1)

Last updated on OCTOBER 20, 2016

Applies to:

Big Data Appliance X3-2 Starter Rack - Version All Versions and later
Big Data Appliance X5-2 Hardware - Version All Versions and later
Big Data Appliance X4-2 Hardware - Version All Versions and later
Big Data Appliance Hardware - Version All Versions and later
Big Data Appliance X6-2 Hardware - Version All Versions and later
Linux x86-64

Symptoms

On an BDA OL5.11 cluster messages like below are seen in the console and in /var/log/messages

ib0: Found gid with mismach lids.(cache:66,from arp: 67)
ib0: Found gid with mismach lids.(cache:50,from arp: 51)
ib0: Found gid with mismach lids.(cache:72,from arp: 73)
ib0: Found gid with mismach lids.(cache:50,from arp: 51)
ib0: Found gid with mismach lids.(cache:66,from arp: 67)
ib0: Found gid with mismach lids.(cache:66,from arp: 67)
ib0: Found gid with mismach lids.(cache:72,from arp: 73)
ib0: Found gid with mismach lids.(cache:50,from arp: 51)
....

These started showing up after new hardware was introduced into the Infiniband fabric and after all of the IB switches were patched in order to have them on the same firmware. The SMS Priority and Master settings were also modified on the switches.

Cause

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