> # Configuring the Registration Period

> The iSNS client specifies the registration period with the iSNS Server. The iSNS Server keeps the registration active until the end of this period. If there are no commands from the iSNS client during this period, then the iSNS server removes the client registration from its database.

> If the iSNS client does not specify a registration period, the iSNS server assumes a default value of 0, which keeps the registration active indefinitely. You can also manually configure the registration period on the MDS iSNS Server.

> ## Detailed Steps

> To configure the registration period on an iSNS Server, follow these steps:

> 1. Choose E nd Devices > iSNS.

> You see the iSNS configuration in the Information pane.

> 2. Click the Servers tab.

> You see the configured iSNS servers.

> 3. Set the ESI NonResponse Threshold field to the ESI retry count value.
> 4. Click the Apply Changes icon to save this change.

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