HP 3000 Manuals

Configuring Systems for Terminals, Printers, and Other Serial Devices

Configuring DNS/IP 

Figure 8-1  displays the DNS/IP Routing Configurationscreen.  You can
reach this screen by pressing [F1], the [DNS/IP Routing]function key, at
the DTC Configuration screen.  See the beginning of this chapter to find
out how to access the [DNS/IP Routing] function key.


          Figure 8-1.  DNS/IP Routing Configuration Screen 

Domain Name Services and IP routing are configured only if you wish to
use DNS to resolve system names when switched DTC ports are connecting to
ARPA (TCP/IP) nodes or when using back-to-back connections.  IP routing
is only needed when back-to-back connections and routers will be used on
the network.  Do not configure IP routing if no routers will be used.

Follow the steps listed here to enter data for this screen.  Refer to the
"Fields" subsection for detailed information about each field on the
screen.

   1.  "DTC name" is a display-only field.

   2.  (Optional) Enter the address of the DNS server on the network.  If
       this field is configured, then default local domain must also be
       configured.

   3.  (Optional) Enter the address of the Backup DNS server on the
       network.

   4.  (Optional) Enter the ARPA default local domain name.  If this
       field is configured then the Default Server Address must also be
       configured.

   5.  (Optional) Complete the "Default IP router address" 
       field.

   6.  (Optional) Complete the "Backup IP router address" 
       field.

   7.  Complete the "Subnet mask"field.  The default is 255.000.000.000.

   8.  After you have entered the desired values, press the [Save Data] 
       key.

   9.  Press the [Prior Screen] key to return to the DTC Configuration
       screen.  Or, press [Validate Link/DTS] to validate your
       configuration if you have completed configuration for your DTCs.

Fields 

DTC name              A display-only field.  The configuration applies to
                      the DTC whose name is shown.

Default server        Optional field which is the address of a Domain
address               Name Server that will be used to resolve ARPA
                      domain names into an IP address.  If this field is
                      configured, then default local domain must also be
                      configured.

Backup server         Optional field which is the address of a Domain
address               Name Server that will be used to resolve ARPA
                      domain names if the Default Server is not
                      available.

Default local domain  Optional field whose value is concatenated with a
                      name the user provides to generate a fully
                      qualified domain name.  If this field is configured
                      then the Default Server Address must also be
                      configured.

                      This field consists of alphanumeric characters
                      separated by periods.  There can be any number of
                      fields, but the total length can not exceed 50
                      characters.  This field is used by the DTC to
                      generate a fully qualified Domain Name when a user
                      connects to a ARPA node from a switched DTC port.
                      Refer to the DTC Technical Reference manual for
                      further information on how the DTC uses this field.

                      __________________________________________________ 

                      NOTE  When choosing a domain name, ensure that the
                            same name is not already in use as an NS
                            nodename.

                      __________________________________________________ 

                      When a user connected to the DTC user interface
                      types c[onnect] <nodename>, The DTC attempts to
                      generate a fully qualified domain name.  If the
                      <nodename> contains at least one period.  The DTC
                      assumes it is already a domain name and doesn't use
                      this field.  Otherwise it concatenates the
                      <nodename> with the contents of this field.  The
                      DTC then sends a request to the Default Server to
                      resolve the domain name into an IP address.

Default IP router     Optional field which specifies the IP address of
address               the default router.  The router routes outbound
                      packets for destinations outside the local subnet.
                      The address of the IP router is used for
                      back-to-back connections or extended switching
                      configurations.

Backup IP router      Optional field which specifies the IP address of
address               the backup router.  The backup router is used if
                      the default router is not available.

Subnet mask           Subnet masks are used by IP to check if the packets
                      should be sent to the destination without routing,
                      or if it should be routed to a destination network
                      different from the current network or subnet.  The
                      first field must be 255.  If no subnetting is
                      required, use the default 255.000.000.000.

                      Subnet masks specify how many bits of the IP
                      address to reserve for subdividing the network into
                      subnets.  The initial calculation is done in
                      binary, with bits reserved for the network and
                      subnet set to "l"s, and the bits reserved for the
                      host set to "0"s.  The decimal value is then
                      displayed.

MPE/iX 5.5 Documentation