System information

General Reference Guide eWON Configuration
RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 49
3.3.4.2.6 Ethernet Gateway behavior
On the eWON, it is possible to define a default gateway on the ethernet interface.
First we must consider 2 cases.
• The eWON has 2 ethernet interfaces (2005/4005/2005CD/4005CD/2104/4104)
In this case, the gateway is active only while the WAN interface is connected.
The eWON-ADSL must be considered as an eWON with 2 Ethernet interfaces.
The ADSL interface is a WAN interface.
• The eWON has only 1 ethernet interface.
3.3.4.2.6.1 eWON with 2 Ethernet interfaces
• Normal behavior
The Ethernet gateway is configured only when the ethernet WAN connection is established.
The Ethernet WAN connection is established on demand when the eWON has no route for a packet, or always when the “Maintain
connection” option is checked in the “Internet connection' configuration”.
• Gateway during an incoming PPP connection
There is a special case when:
• WAN Ethernet connection is enabled
• Incoming PPP is enabled
• Use incoming for outgoing is enabled
In that case, when the incoming communication is received, the eWON will
try to configure the PPP connection as the default gateway. This will happen
only if the WAN connection is not enabled at that time.
So, if the PPP connection is established and the WAN connection is not
active, the PPP connection becomes the gateway. If the WAN connection is
active, then the PPP connection will not become the gateway.
3.3.4.2.6.2 eWON with 1 Ethernet interface
• Normal behavior
In that case, if a gateway is defined, it will become the default gateway only if the Internet access is set to “No internet access”'
If the “Network connection” is configured to something different from “No internet access”, the Ethernet gateway will not become the default
gateway, and a warning will be issued in the event log:
“Ethernet gateway not used (incompatible internet connection)”
• Gateway during an incoming PPP connection
During the incoming PPP connection, the default gateway is normally not changed, except if the 'Use incoming for outgoing' option has been
selected.
In that case, the default gateway becomes the PPP connection during the
incoming connection.
The default gateway is reconfigured to the Ethernet gateway when the PPP
connection ends.