The information in this article applies to:
SYMPTOMSWhen you attempt to connect a Windows NT Server or Workstation computer from one IPX network across a 3Com LANplex 2500 Router (running 8.115 microcode) to another Windows NT Server or Workstation computer located on a remote IPX network you will encounter the error: A Windows 95 client can connect to a Windows NT Server or Workstation Computer across the LANplex router without any difficulties. RESOLUTIONContact 3Com for its latest version of microcode for this router which includes a fix for the problem. MORE INFORMATION
Windows 95 and Windows NT handle netbios over IPX or IPX packet type 20's
differently. In the following example, the Windows 95 client places it's
current network number in the Find Name netbios broadcast packet to
discover the netbios name of the Microsoft networking client (that is
27202.FFFFFFFFFFFF.455). The Windows NT Server or Workstation places a zero
(0) in front of the broadcast packet rather than the network number
(0.FFFFFFFFFFFF.455).
Windows 95IPX: NetBIOS Packet - 27202.00C04FD7ACBC.455 -> 27202.FFFFFFFFFFFF.455 - 0 HopsWindows NT 4.0The Windows NT server/client precedes the Find Name netbios packet from the client to the network with a zero (0) followed by the broadcast.IPX: NetBIOS Packet - 2B9659.000000000001.455 -> 0.FFFFFFFFFFFF.455 - 0 Hops By definition of Novell's IPX routing specification, the router should not care whether the netbios broadcast packet is preceded by a network number or a zero. This should be true when you set up your router to bridge netbios packets over IPX (packet type 20's). Bridging, by definition, should take the packet from one network and propagate it on another network. The 3Com LANplex 2500 router, with microcode version 8.115, kills the Find Name netbios broadcast packet from a Windows NT Server or Workstation because the packet is preceded by a zero (0) network number. In other words, the 3Com LANPlex 2500 router incorrectly handles a netbios packet from a Windows NT Server or client. Here is an excerpt from Novell's IPX routing specification: When a Type 20 broadcast packet is received by a router (this is indicated by a Packet Type of 14h in the IPX header,) the following sequence of events should occur: Additional query words: Winnt 3Com LANplex NwLnk
Keywords : kb3rdparty kbhw kbnetwork NTSrvWkst |
Last Reviewed: February 16, 1999 © 2000 Microsoft Corporation. All rights reserved. Terms of Use. |