Cabletron Systems CSX100 series, Руководство пользователя, Страница: 45 / 153

Router Co
nfiguration
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The target router’s routing information table must be seeded statically so
that the target router dials out to the appropriate remote router when IPX
traffic is targeted to network segments or servers beyond that remote
router. After the link is established, RIP update packets will dynamically
add to the target router’s routing information table. Seeding the routing
table is not necessary when a target router never dials out; it will discover
routes beyond the calling router as soon as RIP updates arrive (provided
the remote router supports RIP). However, for watchdog spoofing to
work, the remote IPX Routes for network segments and servers should be
defined.
IPX SAPs
If the router is to obtain services beyond the remote router, the target
router’s SAP services table must be seeded statically. A SAP service is
identified by:
•
a server name and corresponding server type
•
network number
•
node number
•
socket (the socket number represents the service (application) within
the server node
The target router’s SAP services table must be seeded statically so that
the target router can direct traffic to the appropriate remote router when a
service is requested from a server beyond that remote router. After the
link is established, SAP broadcast packets will dynamically add to the
target router’s services table. Seeding the table is not necessary when a
target router never dials out; it will discover remote services beyond the
calling router as soon as SAP broadcasts arrive (provided the remote
router supports IPX).
IPX Network Numbers
IPX network numbers are assigned to LAN network segments as well as
servers. These numbers should be unique for all IPX networks on the
Internetwork.
IPX external network numbers refer to the physical LAN network
segments to which servers and routers are connected. The WAN link
network number is an external IPX network number. This is a unique
number that you choose (or are given by the network administrator) to
represent the WAN link between the target router and remote router.
The local Ethernet IPX network number is also an external network
number.