User`s guide

Configure Digi devices
68
Assuming the network topology just described, here are the steps for configuring the Ethernet
interfaces of each Digi Connect ES 4/8 SB with Switch device for installation. These steps apply
to a single Digi Connect ES 4/8 SB with Switch and its connected Ethernet and serial devices, and
must be performed for each Digi Connect ES 4/8 SB with Switch deployed.
1 Connect a laptop to one of the Ethernet Switch ports on the Digi Connect ES 4/
8 SB with Switch and open the web interface.
The recommended Ethernet IP address settings for the laptop are:
IP Address: 192.168.1.99
Subnet: 255.255.255.0
Default Gateway: 192.168.1.1
2 In the web interface, go to Configuration > Network > Ethernet Switch IP Settings. page.
This page assigns IP address numbers for devices connected to the Ethernet Switch. It is
recommended that you leave the settings here as-is. The IP address for the Ethernet Switch
on the unit is set to 192.168.1.1. Fixed IP addresses can be set starting at 192.168.1.2,
192.168.1.3, and so on. The DHCP server will assign 192.168.1.101 and higher for devices
that have their IP addresses dynamically assigned.
3 Choose an IP address assignment mechanism and strategy for the uplink interface. Use one
or the other of these assignment mechanisms:
– Assign an IP address in the DHCP configuration file in the network’s DHCP server. In
this case, no configuration change on the Digi device is necessary. The device will
request a DHCP address from any visible DHCP server at startup.
Or, in the command line interface, enter the following:
set network if=eth1 dhcp=on static=off autoip=off
Where eth1 is the network interface of the uplink. The autoip=off option avoids
unintentional network address problems through automatic IP address assignment if
DHCP servers are temporarily unavailable.
– Assign a static IP address. In the web interface, go to
Configuration > Network > Ethernet Uplink IP settings and enter the static IP
address.
Or, in the command line interface, enter the following:
set network if=eth1 ip=<static ip address> sub=<subnet mask>
gate=<gateway> static=on
Where eth1 is the network interface of the uplink. DNS server addresses and other
attributes may also need to be configured on statically assigned interfaces.
4 Enable NAT and port forwarding for any protocols that must be forwarded to the LAN. See
"IP forwarding settings" on page 78. NAT and port forwarding can also be configured from
the command line; see the set nat and set forwarding commands in the Digi Connect
Family Command Reference.
Network configuration is complete.