ZyXEL Communications Vantage Service Gateway VSG-1200 V2 User Manual

VSG-1200 V2 User’s Guide

Chapter 32 Using The SMT

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From the Main Menu screen, enter 3 to display the LAN Configuration menu as shown next. 
Refer to 

 for background information. 

Figure 169   SMT: LAN Configuration  

The following table describes the fields in this menu. 

TCP MSS Setting

Enter the size of the Maximum Segment Size (MSS).

At the “S)ave and return R)eturn without saving M)odify:” prompt, type S and press [ENTER] to save the 

changes and return to the previous screen, type R and press [ENTER] to discard all changes and return 

to the previous screen or type M and press [ENTER] to continue configuring the fields. Restart the 

device when prompted 
Press [ESC] and enter Y to stop any actions in the current screen and return to the previous screen. All 

changes will be discarded.

Table 76   SMT: WAN Configuration: PPTP  (continued)

                             LAN Configuration
  DHCP Configuration
  DHCP Service? (D/R/S)     :S
  Start IP Address(Private) :10.59.1.2
  DHCP Pool Size  (Private) :20
  Lease Time      (Private) :1440
  Primary DNS IP Address    :168.95.1.1
  Secondary DNS IP Address  :

Table 77   SMT: LAN Configuration 

DHCP Service? 

(D/R/S)

Enter D (Disable) to deactivate DHCP services on the LAN. Ethernet devices 

connected to the LAN interface must use static IP addresses.
Enter R (Relay) to set the VSG to forward network configuration requests to a 

DHCP server on the LAN network. Then configure the Server IP Address and 

Agent IP Address fields.
Enter S (Server) to set the VSG to assign network information (IP address, DNS 

information etc.) to Ethernet device(s) connected to the LAN port. This is the 

default setting. 

Start IP Address

This field is visible when you enter S in the DHCP Service field.
Enter the first of the continuous addresses in the IP address pool. The default is 

10.59.1.2.

DHCP Pool Size

This field is visible when you enter S in the DHCP Service field.
This field specifies the size or count of the IP address pool. Enter a number not 

greater than 1024. The default is 253.

Lease Time 

This field is visible when you enter S in the DHCP Service field.
Specify the time (in minutes between 1 and 71582788) a DHCP client is allowed to 

use an assigned IP address. When the lease time expires, the DHCP client is 

given a new, unused IP address. The default is 1440 minutes.