Patton electronic 4020 Series User Manual Page 32

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Settings 32
SmartLink 4020 Getting Started Guide 4 • Network—WAN
WAN PPPoE Configuration
Figure 7. WAN PPPoE Configuration section of the Settings window
Enable PPPoE
Select Yes to enable PPPoE or No to disable PPPoE.
Authentication
Enter the username and password provided by your ISP.
Settings
Idle Timeout. Idle timeout before PPP connection is closed due to inactivity
Echo Timeout. The duration between sending PPP echo requests to server.
Echo Count. The number of unanswered PPP echo requests before the PPP connection is closed.
Service Name. PPPoE Service name
AC Name. PPPoE access concentrator (AC) name
Dynamic DNS
The SL4020 supports Dynamic DNS for use in environments where the IP address of WAN IP interface is not
assigned statically (i.e. permanently) but instead is assigned dynamically using protocols like DHCP.
With a statically assigned IP addresses, DNS is used to establish a fixed relationship between an IP address a DNS
name (example: 209.22.110.3 = [email protected]). The DNS name allows the IP device, like a phone
attached to an SL4020, to be found by the DNS name ([email protected]) anywhere on the Internet.
Prior to Dynamic DNS, dynamically assigned IP address changes could not be automatically reflected in DNS.
As a result, VoIP devices like the SL4020 could not always be located on the Internet by DNS name. This is
especially true for cable modem and ADSL services that use DHCP to assign addresses to customers.
With Dynamic DNS, the SmartLink 4020 will inform the dynamic DNS server of its IP address when it
receives a new or dynamically assigned IP address from the network. This allows the SL4020 to always be
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