VSG-1200 User’s Guide

4.7.2 MTU

A maximum transmission unit (MTU) is the largest size packet or frame, specified in octets (eight-bit bytes) that can be sent in a packet- or frame-based network. The Transmission Control Protocol (TCP) uses the MTU to determine the maximum size of each packet in any transmission. Too large an MTU size may mean retransmissions if the packet encounters a router that can't handle that large a packet. Too small an MTU size means relatively more header overhead and more acknowledgements that have to be sent and handled.

4.7.3 WAN IP Address Settings

Use the WAN/LAN screen to change the WAN IP address settings.

Figure 20 System Setting: WAN/LAN: WAN IP

The following table describes the related labels in this screen.

Table 7 System Setting: WAN/LAN: WAN IP

FIELD

DESCRIPTION

 

 

WAN Port Mode

 

 

 

Get automatically from a

Select this option to set the VSG to act as a DHCP client on the WAN. The

DHCP server

VSG obtains TCP/IP information (IP address, DNS server information, etc.)

 

from a DHCP server.

MTU Setting

Enter the MTU (Maximum Transfer Unit) size.

 

 

Chapter 4 LAN, WAN and Server Setup

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