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SBG6580: LAN Subnet Setup

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Question
How do I configure the LAN settings in the SBG6580?
Answer

Just as the WAN interface of the SBG6580 can be configured for a customized setup, the SBG6580 also includes configurable options for the Local Area Network (LAN).  The LAN IP Address and DHCP range can be configured and modified to suit the needs of the network.  By default, the LAN IP address of the SBG6580 is 192.168.0.1.  This document describes how to change the LAN IP address and DHCP range of the SBG6580.

NOTE 1: If the LAN IP address is modified to be in a different subnet (e.g. 192.168.5.1), the SBG6580 will automatically change the DHCP range to use addresses in that subnet.

NOTE 2: The subnet mask of the SBG6580 (255.255.255.0) cannot be modified.


Changing the Local Area Network (LAN) IP Address

  1. Launch a web browser, such as Internet Explorer, Firefox, or Safari.  Enter http://192.168.0.1 into the address box.

    NOTE: By default the LAN IP address is 192.168.0.1.  If the default address has been changed, enter the custom address in the address box.
     
  2. Enter admin in the Username field.
  3. Enter motorola in the Password field.
  4. Click the Login button.  The Status page appears.

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  5. Click the Basic link on top of the page. The Basic Setup page appears.

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  6. LAN IP Address - Enter the desired IP address for the LAN interface here.  In this example, 192.168.5.1 is used.

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    NOTE: The LAN IP address used must be a private IP address (within one of the following ranges):

    10.x.x.x
    172.16.x.x - 172.31.x.x
    192.168.x.x

  7. Scroll down to the bottom of the page, and click the Apply button.

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  8. Next, the following message will appear (below).  After waiting a few moments, click the here link to go back to the Login page. 

    Image 

     

    NOTE: If the LAN IP address is modified to be in a different subnet (e.g. 192.168.5.1), the SBG6580 will automatically change the DHCP range to use addresses in that subnet.


Configuring the DHCP settings

  1. Launch a web browser, such as Internet Explorer, Firefox, or Safari.  Enter http://192.168.0.1 into the address box.

    NOTE: By default the LAN IP address is 192.168.0.1.  If the default address has been changed, enter the custom address in the address box.
     
  2. Enter admin in the Username field.
  3. Enter motorola in the Password field.
  4. Click the Login button.  The Status page appears.

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  5. Click the DHCP link on top of the page.  The Basic DHCP page appears.

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  6. DHCP Server:
    • If it is desired to have the SBG6580 give IP addresses to all of the devices automatically, leave this setting at yes.
    • If some devices are manually configured with IP addresses, but others are to receive an address from the SBG6580, leave this setting at yes.
    • If there is another device on the network that will be the DHCP server, change this setting to no.
    • If it is desired to manually configure each device with an IP address, change this setting to no.

    NOTE: If the DHCP Server option has been set to no, skip down to step 10.
     
  7. Starting Local Address - This setting classifies the first IP address to be used in the DHCP range.
  8. Number of CPEs - This will classify how many IP addresses are to be used in the DHCP range.  For example, if this option is set to 100, and the Starting Local Address is set as 192.168.0.100, then the DHCP range will be from 192.168.0.100 - 192.168.0.199.
  9. Lease time - This is the amount of seconds that a device will keep an IP address, if that device has received an IP address automatically from the SBG6580.
  10. Click the Apply button.

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