Справочник Пользователя для PC Concepts ADSL2+

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Message forwarding based on the Internet Group Management Protocol (IGMP, not 
configurable). 
5.2.2 System 
Mode 
The System Mode page enables you to configure system-level operating modes that use 
bridging in addition or instead of routing protocols. You can also configure a feature in which 
the mode is selected automatically at start-up, based on the type of Internet connection 
detected on the LAN PC(s).   
 
The current system mode is shown on the System View page that displays when you 
access the configuration program.   The system mode is not configured using a single setting. 
Rather, it is determined at system startup based on whether the device's LAN and WAN 
interfaces are configured with IP information (i.e., are "IP-enabled"), and whether the Bridging 
setting on the System Mode page is enabled or disabled.    
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When the Bridging setting on the System Mode page is disabled, then the system mode 
will display as "Routing". 
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  When the Bridging setting is enabled and at least one LAN or WAN interface is 
IP-enabled, then the system mode will display as "Routing and Bridging."   
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When the Bridging setting is enabled and no interfaces are IP enabled, then the device is 
considered to be in Bridging Mode. Note, however, that in this case you would not be 
able to access Configuration Manager; without being IP-enabled, the Ethernet interface 
could not communicate using the Internet protocol HTTP, which is used to display 
information in your Web browser.