What are defaults for 2016 latency settings?

Understand the latency settings for a 2016 cluster.

John Savill

March 1, 2017

1 Min Read
What are defaults for 2016 latency settings?

Q. What are the defaults for Windows Server 2016 Failover Clusters related to latency?

A. In Windows Server 2012 R2 some of the latency related settings of a cluster such as SameSubnetThreshold and CrossSubnetThreshold were modified once Hyper-V VMs were present. In Windows Server 2016 the cluster defaults have changed as follows (to essentially match the values previously used only when Hyper-V was present):

Property

Win2016 Default

Description

SameSubnetDelay 

1

Frequency heartbeats (HB) sent

SameSubnetThreshold 

10

Missed HB before interface considered down

CrossSubnetDelay 

1

Frequency HB sent to nodes on dissimilar subnets

CrossSubnetThreshold 

20

Missed HB before interface considered down to nodes on dissimilar subnets

CrossSiteDelay

1

Frequency HB sent to nodes on dissimilar sites

CrossSiteThreshold

20

Missed HB before interface considered down to nodes on dissimilar sites

 

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