Netopia 3220-h Guida Utente

Cayman 3220-H User’s Guide

Using the Command Line Interface

December 2000

The broadcast address for most networks is the network number 
followed by 255. For example, the broadcast address for the 
192.168.1.0 network is 192.168.1.255.

set ip dsl vccn netmask netmask

Specifies the subnet mask for the TCP/IP network connected to the 
virtual circuit. The subnet mask specifies which bits of the 32-bit 
binary IP address represent network information. The default subnet 
mask for most networks is 255.255.255.0 (Class C subnet mask).

set ip dsl vccn restriction 

{ admin-disabled | admin-only | none }

Specifies restrictions on the types of traffic the Cayman 3220-H 
accepts over the DSL virtual circuit. For security reasons, the 

admin-disabled

 argument is the default; it means that router traffic 

is accepted but that administrative commands are ignored. The 

admin-only 

argument means that router traffic is ignored but that 

administrative commands are accepted. The 

none

 argument means 

that all traffic is accepted. 

set ip dsl vccn addr-mapping { on | off }

Specifies whether you want the Cayman 3220-H to use network 
address translation (NAT) when communicating with remote 
routers. Address mapping lets you conceal details of your network 
from remote routers. By default, address mapping is turned on.

For more information on network address translation, see  “About 
Network Address Translation” on page C-2.. 

set ip dsl vccn proxy-arp { on | off }

Specifies whether you want the Cayman 3220-H to respond when it 
receives an address resolution protocol for devices behind it. By 
default, proxy ARP is turned off.