# OPC Client Failover

**URL:** <https://forum.inductiveautomation.com/t/opc-client-failover/76052>\
**Category:** Ignition\
**Created:** [July 7, 2023, 11:02am UTC](https://forum.inductiveautomation.com/t/opc-client-failover/76052 "2023-07-07T11:02:18Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Ha99](https://avatars.discourse-cdn.com/v4/letter/h/7feea3/32.png) [@Ha99](https://forum.inductiveautomation.com/u/Ha99)\
**Post date:** [July 7, 2023, 11:02am UTC](https://forum.inductiveautomation.com/t/opc-client-failover/76052/1 "2023-07-07T11:02:19Z")

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Hi,

For OPC Client Failover, I have 3 ignition GW  
In 1:  
• GW1 Master active  
• GW2 Backup cold  
• The OPC client connected to the master  
In 2 :  
• GW1 Master inactive  
• GW2 Backup active  
• OPC client connected to backup  
In 3:  
• GW1 Master active  
• GW2 Backup cold  
• OPC client connected to backup

How to force the OPC client to be connected to the Master?  
And when I stop and start GW2, the opc connection to GW2 does not work, how to solve this problem (I have to switch it to independent after backup to restart properly)?