Novell NETWARE 6-DOCUMENTATION Manual page 1794

Figure 12 IPX Router Accepting and Advertising Services from a Network Not Listed in the Routing
Information Table
LAN Router
NetWare
LAN
Backbone
Router
Suppose a NetWare server somewhere within the backbone network
advertises its file services, which the backbone router receives as a SAP
packet (Service Type=0x0004 and Network Number=0x01234567, for
example). When the LAN router receives the SAP packet from the backbone
router, it checks its Routing Information Table for the network number
0x01234567.
If the LAN router finds the network number, it adds the associated service
information to its services table and advertises the service to the LAN during
the next SAP broadcast. If the LAN router does not find the network number,
it discards the packet. This function occurs if the following command has been
entered at the LAN router:
SET REQUIRED NETWORK FOR SERVICES=ON
This function is disabled by default. However, if this function has been
enabled by the preceding command, it can be disabled by entering the
following command:
SET REQUIRED NETWORK FOR SERVICES=OFF
If the previous command has been entered, the LAN router will not discard the
packet if it does not find the network number in its Routing Information Table.
If the router does not find the network number, it first checks for the nearest
NLSP level 2 router and then for the RIP default route (0xFFFFFFFE) or an
aggregated route. If the LAN router finds one of these, it adds the associated
service information to its services table. If the LAN router does not find any
one of these, it then discards the SAP packet.
Backbone
Network
SAP
NetWare File Server
on Network 0x01234567
83
Setting Up