ARRIS TR3300-AC Users Guide - Manual (Page 36)

Chapter 7: Wireless Router Configuration Screen Descriptions
Release 33 STANDARD 1.5 February 2015 TR3300-AC 802.11ac Wireless Router User Guide 36
DHCP is a set of rules used by devices such as a computer, router, or network adapter to
allow the device to request and obtain an IP address from a server which maintains a list of
addresses available for use.
The DHCP server ensures that all IP addresses are unique, e.g., no IP address is assigned to
a second device while the first device's assignment is valid (its lease has not expired).
Without DHCP, the IP addresses must be entered manually at each computer in an
organization, and a new IP address must be entered each time a computer moves to a new
location on the network.
Start IP Address/End IP Address – Enter the range of IP addresses that the DHCP Server
will be allowed to assign to a network device.
Lease Time – Enter the lease time in seconds before the assigned IP address will expire.
(After the lease time is up, the user is automatically assigned a new dynamic IP address.)
A "lease" is the amount of time that a given IP address will be valid for a computer or other
network device. The lease time can vary depending on how long a user is likely to require
the Internet connection at a particular location. Using very short leases, DHCP can
dynamically reconfigure networks where there are more computers than available IP
addresses, such as educational environments.
Domain Name – This field displays the domain name.
NAT:
NAT Mode – Select the NAT Mode.

Routed with NAT - Data will be routed by the device and all the outgoing packets will
be NATed.

Routed without NAT - Data will be routed by the device but all the outgoing packets
will not be NATed.

Bridged - Data will pass through the device directly without any routing.
UPnP:
Enable UPnP – Click this checkbox to enable UPnP (Universal Plug and Play) on the
system.
Advertisement Time To Live – Enter the maximum number of hops that each UPnP packet
can be sent before it is disregarded. The default value is 4, which should be acceptable for
most home networks.
IGMP Proxy:
Enable IGMP Proxy – Click this checkbox to enable the IGMP (Internet Group
Management Protocol) proxy on the system.