SMC Networks SMC7004VBR V.2 - Manual (Page 50)

Troubleshooting
49
If you are still unable to get an IP Address from the Barricade™,
reinstall your network adapter. Please refer to your adapter
manual for instructions.
I have another IP Address displayed
If you have another IP address listed, then the PC may not be
configured for a DHCP connection. Please refer to Configuring
your Computer for information.
Once you have confirmed your computer is configured for
DHCP, then please follow the steps below.
1. Open a DOS window as described above.
2. Type ipconfig/release.