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VLAN also increases network performance by limiting broadcasts to a smaller and
more manageable logical broadcast domain. In traditional switched environments,
all broadcast packets go to each and every individual port. With VLAN, all
broadcasts are confined to a specific broadcast domain.
Note: VLAN is unidirectional; it only governs outgoing traffic.
NAT
In the simplest form, NAT changes the source IP address in a packet received from
a subscriber (the inside local address) to another (the inside global address)
before forwarding the packet to the WAN side. When the response comes back,
NAT translates the destination address (the inside global address) back to the
inside local address before forwarding it to the original inside host.
Finding Out More
See
Section 6.8 on page 85
6.2 The LAN Connections Screen
The LAN connections screen displays a list of defined LAN interfaces. You can
create a new LAN service or change the default LAN port IP address. Click
Configuration > LAN connections to show the following screen. The default
service, eth1, is not shown and cannot be deleted.
Figure 35 Configuration > LAN connections
P-794H User's Guide
for technical background information on LANs.
Chapter 6 LAN Setup
73
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