IBM Presents OS/2 Software Hits 1995/OS-2_SW_HITS_2ND_EDITION_1995.ISO/i17/tcp20c4.exe/BASEOC1.ZIP/HELP/cnbstk.HLP

OS/2 Help File | 1994-04-04 | 16KB | 517 lines

ΓòÉΓòÉΓòÉ 1. Configuring Network Interface Parameters ΓòÉΓòÉΓòÉ

Use the Configure Network Interface Parameters pages to configure up to eight
LAN adapters and network interface parameters.

Select the Enable LAN adapter check box to enable TCP/IP on this LAN adapter.

To configure a LAN adapter, supply the required Internet Protocol (IP) Address
and the following optional information:

o Subnet Mask
o Broadcast Address
o Destination Address
o Routing Metric Count
o Maximum Transmission Unit

Add additional network interface parameters by selecting the check boxes under
Current ifconfig State.

For help on any selectable field, select the field and press F1 or the Help
pushbutton.

Pushbuttons

The following pushbuttons are available on this page:

o Undo
o Defaults
o Help


ΓòÉΓòÉΓòÉ 1.1. Enable LAN Adapter ΓòÉΓòÉΓòÉ

Select this check box to activate TCP/IP on this LAN adapter.

Deselect this check box to deactivate TCP/IP on this LAN adapter.


ΓòÉΓòÉΓòÉ 1.2. IP Address ΓòÉΓòÉΓòÉ

Type the 32-bit dotted decimal notation Internet Protocol (IP) address. For
example 9.67.43.126 is an IP Address.  This field is required.

Type this address as a two part address as follows:

o The network address assigned when connected to the internet.  This is one,
  two, or three decimal numbers separated by periods.

o A unique local address for each host that connects to the network. Assign
  each host a local address number between 0 and 255.

Combine the network address and the local address with a period between them.

Hosts that exchange packets on the same physical network should have the same
network number.

For additional information on IP addresses, refer to your system administrator
or TCP/IP for OS/2 Installation and Administration.


ΓòÉΓòÉΓòÉ <hidden> 32-bit Dotted Decimal Notation ΓòÉΓòÉΓòÉ

32-bit dotted decimal notation consists of four 8-bit numbers written as a
decimal and separated by periods.  For example, when the bit patterns

00001001 00100010 10000000 00100010

are converted to decimal and separated by periods, the 32-bit dotted decimal
notation is 9.34.128.34.


ΓòÉΓòÉΓòÉ 1.3. Subnet Mask ΓòÉΓòÉΓòÉ

Optional:  If you want to reserve a portion of the internet address (IP
address) for a subnetwork address, type the subnet mask in 32-bit dotted
decimal notation as follows:

 1. Code all 1s in the bit positions for the network portion of the IP address.

 2. Code all 1s in the bit positions for the subnetwork number.

 3. Code all 0s in the bit positions for the host number.  The host number must
    be at least 1 bit.

 4. Convert each byte to a decimal number and separate the numbers with
    periods.

The Subnet mask field specifies how much of the local address portion of the IP
address to reserve for a subnetwork address.

TCP/IP can divide a single network into multiple logical networks. For example,
an organization can have a single IP Address that is known to users outside the
organization, but it can configure its local address portion of the IP address
into a subnetwork number and a host number to represent different departments
within the organization.


ΓòÉΓòÉΓòÉ 1.4. Broadcast Address ΓòÉΓòÉΓòÉ

Optional:  If you want to receive simultaneous transmission of data packets,
type the broadcast address in 32-bit dotted decimal notation and as a two-part
address as follows:

o The network address assigned when connected to the internet.  This is one,
  two, or three decimal numbers separated by periods.

o Set each byte of the local address to all ones, which is decimal 255.
  Separate each byte with a period.

Combine the network address and the local address with a period between them.

Leave this field blank to have TCP/IP for OS/2 automatically calculate the
default broadcast address.

Warning: Be sure to have the correct broadcast address.  An incorrect broadcast
address creates extra traffic on the network, causing network performance
problems.


ΓòÉΓòÉΓòÉ 1.5. Destination Address ΓòÉΓòÉΓòÉ

Optional:  If you want to specify the address of a node on the other end of a
point-to-point link type this address in 32-bit dotted decimal notation.

Leave this field blank if the adapter is attached to a network of hosts.


ΓòÉΓòÉΓòÉ <hidden> Point-to-Point Link ΓòÉΓòÉΓòÉ

A point-to-point link is a data link between two locations without the use of
any intermediate display station or computer.


ΓòÉΓòÉΓòÉ 1.6. Routing Metric Count ΓòÉΓòÉΓòÉ

Initially this field contain 0, indicating a direct connection.  To define the
number of hops to a destination network or host,  set the Routing Metric Count
value to a number between 0 and 15. The higher the metric, the greater number
of hops to the destination network or host.

If a network has more than one routing statement, INETD uses the route with the
smaller metric count first.  It then tries all routes until it succeeds or
until all the routes have been attempted.


ΓòÉΓòÉΓòÉ <hidden> INETD ΓòÉΓòÉΓòÉ

INETD is a super server that allows you to start multiple servers from a single
OS/2 session.


ΓòÉΓòÉΓòÉ 1.7. Maximum Transmission Unit ΓòÉΓòÉΓòÉ

Type the maximum size of a transmission unit that your communications adapter
will transmit, The default value is 1500.

Use the following table to find maximum transmission unit (MTU) values for
common communications adapters.

MTU
Value     Adapter
1462      PCNet
1492      Ethernet on an IEEE 802.3 network
4400      Token-Ring 16/4 Adapter/A card on a 16 MB token-ring network
576       X.25 coprocessor

If your communications adapter is not listed in the table, refer to the
documentation that came with your communications adapter for the MTU value.


ΓòÉΓòÉΓòÉ 1.8. allrs ΓòÉΓòÉΓòÉ

Select this check box to set the token-ring broadcast indicator to single-route
broadcast.

Deselect this check box to set the token-ring broadcast indicator to all-routes
broadcast.  This is the default.


ΓòÉΓòÉΓòÉ 1.9. arp ΓòÉΓòÉΓòÉ

Select this check box to enable Address Resolution Protocol (ARP) mapping
between internet addresses and Ethernet addresses or IBM token-ring addresses.

Deselect this check box to disable ARP.  This is the default.


ΓòÉΓòÉΓòÉ 1.10. icmpred ΓòÉΓòÉΓòÉ

Select this check box to enable TCP/IP to add routes obtained by ICMP
redirects. Internet Control Message Protocol (ICMP) redirects are messages from
a gateway requesting that a host optimize routing by changing its routes.

Deselect this check box to disable TCP/IP from adding routes obtained by ICMP
redirects.  This is the default.


ΓòÉΓòÉΓòÉ 1.11. snap ΓòÉΓòÉΓòÉ

Select this check box to disable sending of token-ring headers with the
extended snap format.

Extended snap format is an IEEE standard and must be enabled to communicate
with workstations using the extended snap format, such as AIX* workstations.

Deselect this check box to enable sending of token-ring headers with the
extended snap format.  This is the default.


ΓòÉΓòÉΓòÉ 1.12. bridge ΓòÉΓòÉΓòÉ

Select this check box to disable routing field support, which sets up variables
for Telnet to use.

Deselect this check box to enable routing field support.  This is the default.


ΓòÉΓòÉΓòÉ 1.13. -trailers ΓòÉΓòÉΓòÉ

Select this check box to enable trailer encapsulation.

Trailer encapsulation minimizes the number of memory-to-memory copy operations
a receiver must perform.

On networks that support the Address Resolution Protocol (ARP), selecting
-trailers indicates that the system should request that other systems use
trailer encapsulations when sending to this host.

Deselect this check box to disable trailer encapsulation.  This is the default.


ΓòÉΓòÉΓòÉ 1.14. -802.3 ΓòÉΓòÉΓòÉ

Select this check box to enable the Ethernet IEEE 802.3 protocol.

Deselect this check box to disable the Ethernet IEEE 802.3 protocol and enable
the Ethernet DIX 2 protocol.  This is the default.


ΓòÉΓòÉΓòÉ 1.15. -canonical ΓòÉΓòÉΓòÉ

Select this check box to indicate that the medium access control (MAC) address
in Address Resolution Protocol (ARP) packets on this token-ring network are in
the canonical IEEE 802.5 format.

Deselect this check box to indicate that the MAC addresses in ARP packets on
this token-ring network are in the non-canonical format.  This is the default.


ΓòÉΓòÉΓòÉ 2. Configuring Routing Information ΓòÉΓòÉΓòÉ

Use this page to add, edit, or delete routing table entries. A routing table
entry consists of the following information:

o Route type
o Route destination
o Router
o Metric count

The routing table information is saved in your SETUP.CMD file.

For help on any selectable field, select the field and press F1 or the Help
pushbutton.

Pushbuttons

The following pushbuttons are available on this page:

o Insert Before
o Insert After
o Edit
o Delete
o Undo
o Defaults
o Help


ΓòÉΓòÉΓòÉ 2.1. Route Type ΓòÉΓòÉΓòÉ

Type one of the following route types to define a route:

D    Specifies all destinations not defined with another routing table entry.

N    Specifies that a network is to be added.

S    Specifies that a subnet is to be added.

H    Specifies that a host destination is to added.


ΓòÉΓòÉΓòÉ 2.2. Route Destination ΓòÉΓòÉΓòÉ

Type the internet protocol (IP) address of the destination host, network, or
subnet. The IP address must be in 32-bit dotted decimal notation.

This field is required for all route types except default. If the route type is
default, this field is ignored.


ΓòÉΓòÉΓòÉ 2.3. Router ΓòÉΓòÉΓòÉ

Type the internet protocol (IP) address of the next hop in the path to the
destination.  This field is required.

The IP address must be in 32-bit dotted decimal notation.


ΓòÉΓòÉΓòÉ 2.4. Metric Count ΓòÉΓòÉΓòÉ

Type a number between 1 and 15 to specify the number of hops to the
destination.

A value of 16 or greater indicates that the network cannot be reached.  This
field is required.


ΓòÉΓòÉΓòÉ <hidden> Route Insert Before ΓòÉΓòÉΓòÉ

Use this window to insert a routing table entry before the highlighted entry.

To insert a routing table entry, complete the following required entry fields:

o Route Type
o Route Destination
o Router
o Metric Count

To add the route before the highlighted entry in the routing table, select the
Insert pushbutton.

To cancel the addition of the routing table entry, select the Cancel
pushbutton.

For help on the routing table entries, select the field and press F1 or the
Help pushbutton.


ΓòÉΓòÉΓòÉ <hidden> Route Insert After ΓòÉΓòÉΓòÉ

Use this window to insert an entry after the highlighted routing table entry.

To insert an entry, complete the following required entry fields:

o Route Type
o Route Destination
o Router
o Metric Count

To add the route after the highlighted entry in the routing table, select the
Insert pushbutton.

To cancel the addition of the routing table entry, select the Cancel
pushbutton.

For help on the routing table entries, select the field and press F1 or the
Help pushbutton.


ΓòÉΓòÉΓòÉ <hidden> Route Edit ΓòÉΓòÉΓòÉ

Use this window to edit a routing table entry.

To modify an entry, select any of the following entry fields and replace the
current value:

o Route Type
o Route Destination
o Router
o Metric Count

To replace the entry in the routing table, select the Edit pushbutton.

To cancel changes you made to entry fields, select the Cancel pushbutton.

For help on the routing table entries, select the field and press F1 or the
Help pushbutton.


ΓòÉΓòÉΓòÉ <hidden> Route Delete ΓòÉΓòÉΓòÉ

Use this window to delete the highlighted routing table entry.

To delete the highlighted entry, select the Delete pushbutton.

To cancel the deletion of the highlighted entry, select the Cancel pushbutton.


ΓòÉΓòÉΓòÉ <hidden> Adding Routing Table Entries ΓòÉΓòÉΓòÉ

To add an entry before an existing routing table entry, do the following:

 1. Select the existing routing table entry.

 2. Select the Insert Before pushbutton.

 3. Complete the routing table entry information.

 4. Select the Insert pushbutton to place the entry information in the routing
    table.

To add an entry after an existing routing table entry, do the following:

 1. Select the existing routing table entry.

 2. Select the Insert After pushbutton.

 3. Complete the routing table entry information.

 4. Select the Insert pushbutton to place the routing table entry information
    in the routing table.


ΓòÉΓòÉΓòÉ <hidden> Editing Routing Table Entries ΓòÉΓòÉΓòÉ

To edit a routing table entry, do the following:

 1. Select the routing table entry you want to edit.

 2. Select the Edit pushbutton.

 3. Complete the routing table entry modifications.

 4. Select the Edit pushbutton to replace the entry in the routing table.


ΓòÉΓòÉΓòÉ <hidden> Deleting a Routing Table Entry ΓòÉΓòÉΓòÉ

To delete a routing table entry, do the following:

 1. Select the routing table entry you want to delete.

 2. Select the Delete pushbutton.

 3. Select the Delete pushbutton in the Route Delete window.

    To retain the route in the routing table, select the Cancel pushbutton.


ΓòÉΓòÉΓòÉ <hidden> Edit Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton to implement the changes made to the selected item.


ΓòÉΓòÉΓòÉ <hidden> Add Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton to add an entry to a list box.


ΓòÉΓòÉΓòÉ <hidden> Cancel Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton to leave the window.  Changed information is not saved.


ΓòÉΓòÉΓòÉ <hidden> Defaults Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton to change to the settings determined by TCP/IP.


ΓòÉΓòÉΓòÉ <hidden> Delete Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton to delete the highlighted entry in a list box.


ΓòÉΓòÉΓòÉ <hidden> Edit Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton to modify the highlighted entry in a list box.


ΓòÉΓòÉΓòÉ <hidden> Help Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton for help on the current field or pushbutton.


ΓòÉΓòÉΓòÉ <hidden> Insert After Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton to add an entry after the highlighted entry in a list
box.


ΓòÉΓòÉΓòÉ <hidden> Insert Before Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton to add an entry before the highlighted entry in a list
box.


ΓòÉΓòÉΓòÉ <hidden> Undo Pushbutton ΓòÉΓòÉΓòÉ

Select this pushbutton to cancel any changes that were made since the last time
this page was saved.


ΓòÉΓòÉΓòÉ <hidden> IBM Trademarks ΓòÉΓòÉΓòÉ

The following terms, denoted by an asterisk at their first occurrence in a
window, are trademarks of IBM Corporation:

AIX
IBM
OS/2
Presentation Manager
PS/2
RISC System/6000


ΓòÉΓòÉΓòÉ <hidden> Non-IBM Trademarks ΓòÉΓòÉΓòÉ

The following terms, denoted by a double asterisk in this online document, are
trademarks of other companies:

Trademark Owned by
PortmapperSun Microsystems, Inc.
SunSun Microsystems, Inc.
UNIXUNIX System Laboratories, Inc.
X Window SystemMassachusetts Institute of Technology
NFSSun Microsystems, Inc.