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NOVELL TECHNICAL INFORMATION DOCUMENT
TITLE: LAN WorkPlace Stack Update 4.1 to 4.2
DOCUMENT ID: TID200048
DOCUMENT REVISION: B
DATE: 26MAY94
ALERT STATUS: Yellow
INFORMATION TYPE: Symptom Solution
README FOR: LWP189.EXE
NOVELL PRODUCT and VERSION:
LAN WorkPlace for DOS 4.2
LAN WorkPlace for DOS 4.1
LAN WorkGroup 4.1
LAN WorkGroup 4.2
ABSTRACT:
This patch enables LAN WorkPlace for DOS and LAN WorkGroup users to update the
TCP/IP Stack from 4.1 to the latest version 4.2.
──────────────────────────────────────────────────────────────────────────────
DISCLAIMER
THE ORIGIN OF THIS INFORMATION MAY BE INTERNAL OR EXTERNAL TO NOVELL. NOVELL
MAKES EVERY EFFORT WITHIN ITS MEANS TO VERIFY THIS INFORMATION. HOWEVER, THE
INFORMATION PROVIDED IN THIS DOCUMENT IS FOR YOUR INFORMATION ONLY. NOVELL
MAKES NO EXPLICIT OR IMPLIED CLAIMS TO THE VALIDITY OF THIS INFORMATION.
──────────────────────────────────────────────────────────────────────────────
SYMPTOM
The user wants to update to the latest version of the TCP/IP Stack.
SOLUTION
Apply the LWP189.EXE to LAN WorkPlace for DOS v4.1 or LAN WorkGroup 4.1
software. This will update the Stack files to the latest version of LAN
WorkPlace for DOS 4.2 or LAN WorkGroup 4.2. This patch does not include
the NFS Client for LAN WorkPlace software.
For specific information on each fix in the TCPIP Stack, see the Solution
Specifics section that follows.
Self-Extracting File Name: LWP189.EXE Revision: B
Files Included Size Date Time
\
LWP189.TXT (This File)
PING.EXE 22544 04-04-94 4:20a
PING.MSG 304 02-01-94 1:32p
SNMP.EXE 32374 02-01-94 4:12a
TCPIP.EXE 43348 04-04-94 4:20a
LWPCON.EXE 257504 02-01-94 4:12a
LWPCON.HLP 44238 02-01-94 4:12a
LWPCON.MSG 14334 02-01-94 4:12a
VTCPIP.386 10721 04-04-94 4:20a
WGTCPIP.EXE 67460 04-04-94 4:20a
WINSOCK.DLL 34640 02-01-94 4:12a
IPTUNNEL.EXE 14114 04-04-94 4:20a
NOVASYNC.EXE 4672 02-01-94 4:12a
RFCNBIOS.EXE 57865 04-04-94 4:20a
WLIBSOCK.DLL 47846 04-04-94 4:20a
Installation Instructions:
Copy the files to the LAN WorkPlace / LAN WorkGroup BIN directory. The
default LAN WorkPlace BIN directory is C:\NET\BIN, and the default LAN
WorkGroup directory is fileserver/volume}:NET\BIN. Be sure that the
WINSOCK.DLL and WLIBSOCK.DLL in this directory are the only ones in your
path; having others in \WINDOWS or \WINDOWS\SYSTEM will cause problems.
Solution Specifics:
With these files you will be able to update your TCP/IP stack to include
various bug fixes and feature enhancements.
Check for these files Size Date Time
--------------------- ----- -------- ------
TCPIP.EXE 43348 04-04-94 4:20a
WGTCPIP.EXE 67460 04-04-94 4:20a
VTCPIP.386 10721 04-04-94 4:20a
WLIBSOCK.DLL 47846 04-04-94 4:20a
WINSOCK.DLL 34640 02-01-94 4:12a
NOVASYNC.EXE 4672 02-01-94 4:12a
RFCNBIOS.EXE 57865 04-04-94 4:20a
IPTUNNEL.EXE 14114 04-04-94 4:20a
PING.MSG 304 02-01-94 1:32p
PING.EXE 22544 04-04-94 4:20a
SNMP.EXE 32374 02-01-94 5:00p
LWPCON.EXE 257504 02-01-94 5:00p
LWPCON.HLP 44238 02-01-94 5:00p
LWPCON.MSG 14334 02-01-94 5:00p
New Features:
■ Duplicate IP Address Detection:
A feature to detect whether the assigned local IP address is already
being used by another node on the local network. The IP address can
be obtained either through the NET.CFG file configuration or
dynamically from the BOOTP or RARP server. If TCP/IP detects a
duplicate IP address, the TCPIP.EXE will not load and the following
error message appears:
FATAL: IP address assigned is already in use by: nnnnnnnnnnnn.
where nnnnnnnnnnnn is the six-byte hardware address of the node
currently using the IP address.
■ Dead Router Detection and Recovery:
A feature to automatically switch to a backup router if the primary
router fails. Automatically switching to a backup router prevents
the interruption of user applications. The router switch occurs
when the selected router does not respond to an ARP request or when
the protocol stack detects excessive TCP retransmissions. Router
switching applies to default routers as well as routers in the Route
Cache table.
You enter the ip_router parameter in the Protocol TCPIP section of
the NET.CFG file. You can specify up to three default routers for
each active network.
For example:
ip_router 128.57.4.254
ip_router 128.57.4.253
ip_router 128.57.4.252
■ Static Route:
A feature that allows you to set a permanent entry in the Routing
table to associate the destination network host address with a
router address. Static route configuration places the indicated
routes into the IP routing database. The IP uses those routes to
direct packets in addition to the routes discovered dynamically.
To configure the static route, enter the following in the Protocol
TCPIP section of the NET.CFG file or use the LWPCON utility Routing
Tables:
route host 'host_addr' 'router_addr'
or the parameter
route net 'net_addr' 'router_addr'
For example:
route host 128.57.225.24 128.57.4.19
or
route net 128.90.0.0. 128.57.6.55
■ Address Resolution Protocol (ARP) Table Editing:
An enhancement to both the LWPCON utility and SNMP that allows you
to insert, modify, or delete the ARP table entry. Using the LWPCON
utility, you edit the ARP table with the Address Translation Table
screen.
You must properly configure the ControlCommunity parameter in the
Protocol SNMP section of the NET.CFG file to be able to remotely
edit the ARP table through the SNMP protocol. Refer to the LAN
WorkPlace for DOS Administrator's Guide for more details on the
ControlCommunity parameter.
■ New Frame Types Support:
A feature in which TCPIP automatically performs a protocol
registration for frame types FDDI_SNAP and IBM_PCN2_SNAP.
■ TCP Receive Window Size Tuning:
A feature to set the initial protocol stack's TCP maximum receive
window size. You enter the tcp_window parameter in the Protocol
TCPIP section of the NET.CFG file.
For example:
tcp_window 4096
where the maximum TCP receive window size is set to 4096 bytes.
■ TCP Maximum Segment Size Tuning:
A feature that sets the maximum TCP packet segment size to be used
when communicating with other nodes. You enter the tcp_maxsegsize
parameter in the Protocol TCPIP section of the NET.CFG file.
For example:
tcp_maxsegsize 512
where the maximum packet segment size is set to 512 bytes.
■ Auto-loading of VTCPIP.386:
A new feature of TCPIP.EXE and WGTCPIP.EXE automatically loads the
VTCPIP.386 VxD when MS Windows is started in enhanced mode (provided
that VTCPIP.386 is in your DOS search path). Therefore, the
"device=vtcpip.386" line can now be removed from the Windows
SYSTEM.INI file.
The benefit here is that VTCPIP.386 won't complain when MS Windows
is started in enhanced mode when TCPIP.EXE is not resident.
Bug Fixes:
----------
■ TCP Receive window size > 32768:
TCP/IP would not work correctly when receiving window sizes in
excess of 32767 bytes.
■ TCP Segments which arrived as IP Fragments:
TCP/IP would not work correctly when receiving packets that required
re-assembly at the IP level.
■ Domain Names:
This version of WLIBSOCK fixes a problem in the DNS code when
dealing with multihomed hosts. In previous versions, the first IP
address associated with a multihomed host was reported incorrectly
with the first byte set to zero, and the last byte truncated.
NOTE: The following message files will be displayed in English only
if applied to the French, Spanish, German, and Portuguese versions
of LAN WorkPlace for DOS and LAN WorkGroup. Please check and see
if these are required before installing.
LWPCON.MSG
PING.MSG
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Any trademarks referenced in this document are the property of their
respective owners. Consult your product manuals for complete trademark
information.
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