Chapter 11 Interfaces
NXC5200 User’s Guide
184
First DNS
Server, Second
DNS Server,
Third DNS
Server
Specify the IP addresses up to three DNS servers for the DHCP clients
to use. Use one of the following ways to specify these IP addresses.
Custom Defined - enter a static IP address.
From ISP - select the DNS server that another interface received
from its DHCP server.
NXC - the DHCP clients use the IP address of this interface and the
NXC works as a DNS relay.
First WINS
Server, Second
WINS Server
Type the IP address of the WINS (Windows Internet Naming Service)
server that you want to send to the DHCP clients. The WINS server
keeps a mapping table of the computer names on your network and
the IP addresses that they are currently using.
Lease time
Specify how long each computer can use the information (especially
the IP address) before it has to request the information again.
Choices are:
infinite - select this if IP addresses never expire.
days, hours, and minutes - select this to enter how long IP
addresses are valid.
Enable IP/MAC
Binding
Select this option to have this interface enforce links between specific
IP addresses and specific MAC addresses. This stops anyone else from
manually using a bound IP address on another device connected to
this interface. Use this to make use only the intended users get to use
specific IP addresses.
Enable Logs
for IP/MAC
Binding
Violation
Select this option to have the NXC generate a log if a device
connected to this interface attempts to use an IP address that is
bound to another device’s MAC address.
Static DHCP
Table
Configure a list of static IP addresses the NXC assigns to computers
connected to the interface. Otherwise, the NXC assigns an IP address
dynamically using the interface’s IP Pool Start Address and Pool
Size.
Add
Click this to create a new entry.
Edit
Select an entry and click this to be able to modify it.
Remove
Select an entry and click this to delete it.
#
This field is a sequential value, and it is not associated with a specific
entry.
IP Address
Enter the IP address to assign to a device with this entry’s MAC
address.
MAC Address
Enter the MAC address to which to assign this entry’s IP address.
Description
Enter a description to help identify this static DHCP entry. You can use
alphanumeric and
()+/:=?!*#@$_%-
characters, and it can be up to
60 characters long.
MAC Address
Setting
Have the interface use either the factory assigned default MAC
address, a manually specified MAC address, or clone the MAC address
of another device or computer.
Table 63
Configuration > Network > Interface > Ethernet > Edit (continued)
LABEL
DESCRIPTION