Operation Manual

134 NetWare MultiProtocol Router for ISDN 3.1 Installation and ISDN Configuration Guide
implemented for Remote Node-LAN links, however this filter
naturally applies for both LAN-LAN and Remote Node-LAN
links.
Default: Enabled
Options: Enabled, Disabled
The following example shows how the filter works:
When a NetWare server or a client issues a message or warning
(e.g. an "NLM" on the server such as ARCserve, or a user using
the "send" command on a client), this will be transported to the
addressed clients, also to those connected via ISDN. The IPX
Broadcast Message Filter starts counting the subsequent "IPX
Broadcast Message Waiting" packets issued over ISDN to clients
as soon as no data packets are concurrently transferred over such
an ISDN link and starts filtering after five of these packets have
passed (after ten seconds, if the default polling interval of 2
seconds is used) and disables the ISDN link as soon as the
Inactivity Timeout expires. If the ISDN line is set up again to
transmit data, this filter is reset and begins to count anew as
described above.
25. Check the NetBIOS Outbound Filter .
Windows-based systems frequently initiate NetBIOS broadcasts.
For the transmission of NetBIOS packets within IPX, IPX Packet
Type 20 is used.
On the network protocol layer, NetBIOS broadcasts can be
filtered by enabling the "Advanced Packet Type 20 Flooding"
parameter in the IPX expert configuration or via FILTCFG.NLM.
The NetBIOS Outbound Filter allows outbound filtering of IPX
Type 20 packets on the ISDN driver level to prevent them from
being transmitted to remote sites over ISDN.
Default: Enabled
Options: Enabled, Disabled
When the NetBIOS Outbound Filter is enabled, NetBIOS broad-
casts transmitted over IPX Type 20 packets are filtered, and
therefore not transmitted over ISDN to remote sites.
If this filter is disabled, ISDN connections to remote sites are set
up by the NetWare MultiProtocol Router for ISDN each time
such a broadcast packet is to be transferred.