HP e3000/iX Network Planning and Configuration Guide (36922-90037)

142 Chapter8
Configuring an X.25 Node
To Configure an X.25 Network Interface
IP subnet
mask An IP subnet mask is specified in the same format as
an IP address. The 32-bit mask is grouped in octets
expressed as decimal integers and delimited by either a
period (.) or a space. An IP mask is used when
configuring subnetworks. The mask identifies which
bits of an IP address will be used to define a
subnetwork. To determine these bits, you first need to
estimate how many subnetworks and nodes per
subnetwork you need. See Chapter 2, “Networking
Concepts,” for details on deriving an IP subnet mask.
Link name The link name identifies a specific DTC/X.25 Network
Access card to be used for X.25 system-to-system
connections. This link name must be the same as the
link name you entered for this card when you
configured your DTCs. You may configure up to 11
links. (One link must be used for loopback. Loopback
will be automatically configured during the guided
screen configuration.)
DTC Node
Name The DTC node name is the fully qualified nodename
(name.domain.organization) of the DTC that
contains the DTC/X.25 Network Access card with the
configured link name.
Card Number The DTC card number is the number of the DTC/X.25
Network Access card in the associated DTC. If the card
is contained in a DTC 48, the DTC card number can be
any number from 1 to 5. If the card is contained in a
DTC 16, the card number must be 2.
To Configure X.25 Virtual Circuits
The X.25 Virtual Circuit Configuration screen (#47) in Figure 8-3 is
displayed if you press the
[Config Directry] key from the X.25
Configuration screen (#48) in Figure 8-2. This screen lets you configure
the network directory.