#MultiSubnet
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SQL Server 2016 AlwaysOn in Windows Server 2012R2 WFC - MultiSubnet Listener returns wrong IP address after a FlushDNS - Error Connection Timeout!
SQL Server 2016 AlwaysOn in Windows Server 2012R2 WFC – MultiSubnet Listener returns wrong IP address after a FlushDNS – Error Connection Timeout!
Issue: (Failover had not occurred, commands executed without pause).
Fixed.
Key changes were RegisterAllProvidersIP=0, HostRecordTTL=300 (5 minutes instead of default 1200 (20 minutes)).
If using .Net Framework 4.5+, recommend adding to client connection strings: MutiSubnet=True; Ref SqlClient support for HA and DR.
Key steps were:
Set RegisterAllProvidersIP=0 for the Cluster and LG.
Set HostR…
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#AlwaysOn#Cluster#Connection Timeout#Disaster Recovery#DNS#Error#Failover#High-Availability#MultiSubnet#PowerShell#SQL Server#Windows Server 2012R2
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Tweeted
#SqlServerHelp - MSSQL 2014 : MultiSubnet AOG, ping to the listener Name, is pinging on the DR site. https://t.co/7yMGsk8QSX via SSC
— SQL Joker (@sql_joker) December 6, 2017
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