Configure the Ethernet interface for Connect ES 4/8 SB with Switch

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.

To configure the Ethernet interface for each Connect ES 4/8 SB with Switch:

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 IP address settings for the laptop are as follows:
- IP Address: 192.168.1.99
- Subnet: 255.255.255.0
- Default Gateway: 192.168.1.1
From the web interface, select Configuration > Network > Ethernet Switch IP Settings, This page assigns IP address numbers to devices connected to the Ethernet Switch. Digi recommends 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. You can set fixed IP addresses starting at 192.168.1.2, 192.168.1.3, and so on. The DHCP server assigns 192.168.1.101 and higher for devices that have their IP addresses dynamically assigned.
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 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, type the following command:
```
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. From the web interface, select Configuration > Network > Ethernet Uplink IP settings and type the static IP address.
  
  Or, in the command line interface, type the following command:
```
set network if=eth1 ip=<static ip address> sub=<subnet mask> gate=<gateway> static=on
```
  Where eth1 is the network interface of the uplink. You may also need to configure DNS server addresses and other attributes on statically assigned interfaces.
Enable NAT and port forwarding for any protocols that must be forwarded to the LAN. See IP forwarding settings. You can also configure NAT and port forwarding from the command line; see the set nat and set forwarding commands in the Digi Connect and ConnectPort TS Family Command Reference.

Network configuration is complete.