D-Link xStack DGS-3426 Cli Manual page 6

xStack DGS-3400 Series Layer 2 Gigabit Managed Switch CLI Manual
NOTE: The DGS-3400 Series of switches have the capability to be
configured for an IP address of 0.0.0.0, or, in essence, have no IP
address. This function maybe used to disable Layer 3 functions of the
Switch. When the IP address is set to 0.0.0.0 (invalid IP address), the
Switch can only be managed through the console port or SIM. Other
management applications such as Telnet, Web-based and SNMP cannot
be used to manage the Switch when its IP address is 0.0.0.0.
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