Observa Telecom TD851W User Manual page 33

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Max Lease Time: The time that the DHCP client is allowed to maintain the assigned
dynamic IP. After the dynamic IP address has expired, the user will be automatically
assigned a new one. The default is 1440 minutes.
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Domain Name: Specify a user-friendly name to refer to the group of hosts (subnet) that
will be assigned addresses from this pool.
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DNS Servers: The IP address of DNS server used in option filed of DHCP message.
Apply Changes: Click this button to save your configuration.
Undo: Click this button to cancel your configuration.
Set VendorClass IP Range: Click this button to and then you will enter the screen as shown
in Figure 4-12. This page allows you to configure the IP address range depending on device's
option60.
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Device name: Give a name for the class of your device, such as PC, Phone, TV, etc.
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Start address: Specify the start address.
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End address: Specify the end address.
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Default gateway: Enter the IP address of the Modem Router.
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Option60: A string of n octets, interpreted by DHCP servers, used by DHCP client to
optionally identify the vendor type and configuration of a DHCP client. In Figure 4-12, we
suppose 11 as PC's option60.
After configuration, click Apply Changes button to save your changes.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide
Figure 4-12
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