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After the host on the DR side loses power abnormally, the asynchronous remote replication pair synchronization status fails, and the replication network from DR to PR side is disconnected, resulting in asynchronous remote replication pair is displayed as Failure.
The replication networks planned by DR and PR reuse the storage external network, but belong to different network segments.
In the early stage, commands were manually added in the host background to configure static routes to achieve Layer 3 mutual access of the replication network. However, this command requires modifying the configuration file to take effect permanently. If it is not configured, the route disappears after the host restarts.
UIS supports configuring routes on the host page, no need to add them in the background
After manually adding the static route, the replication networks on both sides are interconnected and the replication pair status returns to normal.