Raritan PX2-1000 SERIES, Руководство пользователя, Страница: 21 / 648

Chapter 1: Introduction
2
1U Products

The PX device

1U bracket pack and screws

A null-modem cable with DB9 connectors on both ends (Raritan
number: 254-01-0006-00) (optional)

Cable retention clips for the inlet (for some models only)
2U Products

The PX device

2U bracket pack and screws

A null-modem cable with DB9 connectors on both ends (Raritan
number: 254-01-0006-00) (optional)

Cable retention clips for the inlet (for some models only)
APIPA and Link-Local Addressing
The PX supports Automatic Private Internet Protocol Addressing (APIPA)
as of release 3.2.0.
With APIPA, your PX automatically configures a link-local IP address and
a link-local host name when it cannot obtain a valid IP address from any
DHCP server in the TCP/IP network.
Only IT devices connected to
the same subnet
can access the PX using
the link-local address/host name. Those in a different subnet cannot
access it.
Exception: The PX in the Port Forwarding mode does not support APIPA.
See
Setting the Cascading Mode (on page 136).
Once the PX can get a DHCP-assigned IP address, it stops using APIPA
and the link-local address is replaced by the DHCP-assigned address.
Scenarios where APIPA applies:

DHCP is enabled on the PX, but no IP address is assigned to the
PX.
This may be caused by the absence or malfunction of DHCP servers
in the network.
Note: Configuration by connecting the PX to a computer using a
network cable is an application of this scenario. See
Connecting the
PX to a Computer (on page 18).