Rockwell Automation Publication 1783-UM001B-EN-P - May 2010 67
Work with RSLogix 5000 Software, Version 15 or Later Appendix F
Work with the DHCP Dialog
Box
The entries on the dialog box that you access by clicking the DHCP tab from the
top of the New Module dialog box include the following.
• Mode: Select from Assigned by Port, Assigned by Pool, Off.
• Subnet Mask: Subnet Mask given to all devices assigned IP addresses with
the 1783-EMS switch.
• Default Gateway: Should be left blank if no gateway exists on the network.
• DNS Primary: Should be left blank if no DNS server is present on the
network.
• DNS Secondary: Should be left blank if no DNS server is present on the
network.
• Default Lease Time: 7 days by default.
• DHCP Pool Configuration: Used when Assigned by Pool mode is
selected; assigns next available IP address from this range of addresses.
• Port Based IP assignment: Associates an IP address with a given port; any
request coming over that port for an IP address is given the address
associated with the port. Leaving the port blank instructs the 1783-EMS
switch to ignore DHCP requests coming from that port.
IMPORTANT
Settings of the DHCP dialog box overwrite settings made on the
HTML management interface. If you are scanning the 1783-EMS
switch with Logix software, use this dialog box to configure IGMP to
avoid confusion.
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