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eWON General Reference Guide - eWON wiki

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3.3.4.2.6 Ethernet Gateway behavior<br />

On the <strong>eWON</strong>, it is possible to define a default gateway on the ethernet interface.<br />

First we must consider 2 cases.<br />

• The <strong>eWON</strong> has 2 ethernet interfaces (2005/4005/2005CD/4005CD/2104/4104)<br />

In this case, the gateway is active only while the WAN interface is connected.<br />

The <strong>eWON</strong>-ADSL must be considered as an <strong>eWON</strong> with 2 Ethernet interfaces.<br />

The ADSL interface is a WAN interface.<br />

• The <strong>eWON</strong> has only 1 ethernet interface.<br />

3.3.4.2.6.1 <strong>eWON</strong> with 2 Ethernet interfaces<br />

<strong>General</strong> <strong>Reference</strong> <strong>Guide</strong> <strong>eWON</strong> Configuration<br />

• Normal behavior<br />

The Ethernet gateway is configured only when the ethernet WAN connection is established.<br />

The Ethernet WAN connection is established on demand when the <strong>eWON</strong> has no route for a packet, or always when the "Maintain<br />

connection" option is checked in the "Internet connection' configuration".<br />

• Gateway during an incoming PPP connection<br />

There is a special case when:<br />

• WAN Ethernet connection is enabled<br />

• Incoming PPP is enabled<br />

• Use incoming for outgoing is enabled<br />

In that case, when the incoming communication is received, the <strong>eWON</strong> will<br />

try to configure the PPP connection as the default gateway. This will happen<br />

only if the WAN connection is not enabled at that time.<br />

So, if the PPP connection is established and the WAN connection is not<br />

active, the PPP connection becomes the gateway. If the WAN connection is<br />

active, then the PPP connection will not become the gateway.<br />

3.3.4.2.6.2 <strong>eWON</strong> with 1 Ethernet interface<br />

• Normal behavior<br />

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"'<br />

If the "Network connection" is configured to something different from "No internet access", the Ethernet gateway will not become the default<br />

gateway, and a warning will be issued in the event log:<br />

"Ethernet gateway not used (incompatible internet connection)"<br />

• Gateway during an incoming PPP connection<br />

During the incoming PPP connection, the default gateway is normally not changed, except if the 'Use incoming for outgoing' option has been<br />

selected.<br />

In that case, the default gateway becomes the PPP connection during the<br />

incoming connection.<br />

The default gateway is reconfigured to the Ethernet gateway when the PPP<br />

connection ends.<br />

RG-001-0-EN ver 1.14 <strong>eWON</strong>® - 02/05/2012 - ©<strong>eWON</strong> sa Page 53

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