ZyXEL Communications Prestige 861H-G1, Руководство пользователя

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Prestige 861H User’s Guide
21-2 Bridging Setup
the hosts without problems. However, the Internet Assigned Numbers Authority (IANA) has
reserved the following three blocks of IP addresses specifically for private networks:
10.0.0.0 — 10.255.255.255
172.16.0.0 — 172.31.255.255
192.168.0.0 — 192.168.255.255
You can obtain your IP address from the IANA, from an ISP or it can be assigned from 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.
21.3 Nailed-Up Connection (PPP)
A nailed-up connection is a dial-up line where the connection is always up regardless of traffic
demand. The Prestige does two things when you specify a nailed-up connection. The first is that
idle timeout is disabled. The second is that the Prestige will try to bring up the connection when
turned on and whenever the connection is down. A nailed-up connection can be very expensive
for obvious reasons.
Do not specify a nailed-up connection unless your telephone company offers flat-rate service or
you need a constant connection and the cost is of no concern
21.4 NAT
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a
host in a packet, for example, the source address of an outgoing packet, used within one network
to a different IP address known within another network.
21.5 Bridge Ethernet Setup
Basically, all non-local packets are bridged to the WAN. Your Prestige does not support IPX.
21.5.1 Remote Node Bridging Setup
Follow the procedure in another section to configure the protocol-independent parameters in
Menu 11.1 – Remote Node Profile . For bridging-related parameters, you need to configure
Menu 11.3 – Remote Node Network Layer Options .