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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
78 
An ISO Certificed Company 
Click 
Add
in the 
DHCP Classes
page and the following page appears. 
 
                 
                                
                    
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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
79 
An ISO Certificed Company 
Enter the class name and class data, and select class type. Click 
Add
to show the 
following page. 
 
                 
                                
                    
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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
80 
An ISO Certificed Company 
Click
: in the 
Subnet Pools
page. You can attach an existent class name, and set 
its attribute. Click
Apply
and the following page appears. In this page, you can view 
its status. 
 
                 
                                
                    
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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
81 
An ISO Certificed Company 
In the 
Shared-Networks
page, you can add or edit the DHCP shared networks. 
3.4.6 
DHCP Relay 
Choose 
Configuration
>
DHCP Relay 
and the following page appears. In this 
page, you can modify the DHCP relay settings or add DHCP server adress or 
interfaces running DHCP relay. DHCP relay is used to send the DHCP client 
request to other DHCP server across several physical and logical sub-networks. 
For a DHCP client, the relay acts as a DHCP server, and this operation is 
 
                 
                                
                    
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User Manual for T2-B-Gawv1.4U10Y.BI 
Teracom Limited 
82 
An ISO Certificed Company 
transparent. It is prohibited to run the DHCP server and the DHCP relay 
simultaneously. 
The following table describes the parameters of this page. 
Field 
Description 
DHCP Server Address 
The IP address of the DHCP server to WAN 
Interfaces 
Running 
DHCP Relay 
DHCP 
request 
sends 
out 
through 
this 
interface. 
Note: 
After entering the effective server address in the DHCP server address in the 
DHCP Relay Settings
page, you must list all interfaces that the DHCP relay 
needs to bind to, for both sending and receiving packets. For example, it is not 
enough to only bind to a LAN interface (iplan) to receive the requests from the 
DHCP clients. It is also necessary to bind a WAN interface. 
3.4.7 
IPv6 Prefix 
Choose 
Configuration
>
IPv6 Prefix
and the
following page appears.
In this page, 
the prefixes are added to the LAN side interface. Then, the modem advertises 
these prefixes in router advertisements on the LAN side. LAN side hosts can auto 
configure them using these prefixes. All prefixes are advertised as on-link and 
autonomous.