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Today we’ll give a tip about DAG in site resilience.
Did you already think in a site resilience? If I have a site resilience, 2 DAG’s and occur an outage in your main site. At this time, ok, you have a DAG… no problem. But, if the main datacenter was restored before the switches to talk with site resilience… Can you see this? The DAG in site resilience is UP and the DAG in your main datacenter also is up!
It is a problem….
So, to solve this, you can use the DAC mode (Datacenter Activation Coordination).
However, when the DAG is down… you need do some things to bring it up. Bellow, you can check the steps to safely start the DAG.