ZyXEL Communications NSA-220 User Manual

Chapter 7 Network Screen

NSA-220 User’s Guide

Secondary 
DNS Server

Type a secondary DNS server IP address.

Jumbo Frames

Jumbo frames improve network performance. You must have a 1 Gbps (Gigabit 
Ethernet) network that supports jumbo frames. Select the largest size of frame 
that all of your network devices (including computer Ethernet cards and switches, 
hubs, or routers) support.

Note: If you enable jumbo frames on the NSA in a network that 

does not support them, you will lose access to the NSA. If 
this occurs, you will have to restore the factory default 
configuration. Push the RESET button on the NSA’s rear 
panel and release it after you hear a beep.

Network 
Diagnostic Tool

Use this section to test the network connection to a particular IP address or 
domain name. Select an address or type it into the field. Then click Ping to have 
the NSA send a packet to test the network connection. If the NSA is able to “ping” 
the host, the network connection is OK.

Apply

Click Apply to save your TCP/IP configurations. After you click Apply, the NSA 
restarts. Wait until you see the Login screen or until the NSA fully boots and then 
use the NDU to rediscover it.

Reset

Click Reset to begin configuring this screen afresh.

Table 23   System Setting > Network > TCP/IP