Wan Ip Address Assignment; Dns Server Address Assignment; Table 40 Private Ip Address Ranges - ZyXEL Communications ZYWALL 35 User Manual

Table 39 Load Balancing: Spillover (continued)
LABEL
Time Frame
Send traffic to
secondary WAN
when primary
WAN bandwidth
exceeds

8.9 WAN IP Address Assignment

Every computer on the Internet must have a unique IP address. If your networks are isolated
from the Internet, for instance, only between your two branch offices, you can assign any IP
addresses to the hosts without problems. However, the Internet Assigned Numbers Authority
(IANA) has reserved the following three blocks of IP addresses specifically for private
networks.

Table 40 Private IP Address Ranges

10.0.0.0
172.16.0.0
192.168.0.0
You can obtain your IP address from the IANA, from an ISP or have it assigned by a private
network. If you belong to a small organization and your Internet access is through an ISP, the
ISP can provide you with the Internet addresses for your local networks. On the other hand, if
you are part of a much larger organization, you should consult your network administrator for
the appropriate IP addresses.
Regardless of your particular situation, do not create an arbitrary IP address;
always follow the guidelines above. For more information on address
assignment, please refer to RFC 1597, Address Allocation for Private Internets
and RFC 1466, Guidelines for Management of IP Address Space.

8.10 DNS Server Address Assignment

Use DNS (Domain Name System) to map a domain name to its corresponding IP address and
vice versa, for instance, the IP address of www.zyxel.com is 204.217.0.2. The DNS server is
extremely important because without it, you must know the IP address of a computer before
you can access it.
The ZyWALL can get the DNS server addresses in the following ways.
ZyWALL 5/35/70 Series User's Guide
DESCRIPTION
You can set the ZyWALL to get the measured bandwidth using the average
bandwidth in the specified time interval.
Enter the time interval between 10 and 600 seconds.
Specify the maximum allowable bandwidth on the primary WAN. Once this
maximum bandwidth is reached, the ZyWALL sends the new session traffic that
exceeds this limit to the secondary WAN. The ZyWALL continues to send traffic of
existing sessions to the primary WAN.
- 10.255.255.255
- 172.31.255.255
- 192.168.255.255
Chapter 8 WAN Screens
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