Intel ER8100STUS - Express 8100 Router, Reference Manual

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Reference.bok : Chapter09 79 Wed Apr 22 10:58:08 1998
79
Novell Routing Concept
Novell IPX Routing
IPX watchdog spoofing
To counteract the problem of sending watchdog packets over dial-up (switched)
WAN links, IPX watchdog spoofing can be set up in the router before the WAN
link (on the server’s side). When IPX watchdog spoofing is enabled, the router
answers IPX watchdog packets on behalf of clients. The WAN link is therefore
not activated to send IPX watchdog packets to clients.
IPX Serialization Packets
IPX serialization packets
IPX Serialization Packets contain license information and are regularly sent
across a network by NetWare servers (addressed to socket 457). If a server re-
ceives a Serialization Packet containing the license number it is using itself, it
complains about license violations.
Discarded by the Intel
Express 8100 Router
As IPX Serialization Packets are sent by NetWare servers at regular intervals,
and do not allow dial-up (switched) WAN links to become inactive—the operat-
ing costs can therefore be excessive. For this reason, IPX Serialization Packets
are discarded by the Intel Express 8100 Router.
Sequenced Packet Exchange (SPX)
Sequenced Packet
eXchange (SPX)
SPX is a transport layer protocol which runs on top of the Internetwork Packet
eXchange (IPX) protocol (network layer), and is used to control sessions be-
tween network devices across the network. An important function of the SPX
protocol is guaranteed data delivery, as this function is not provided by the IPX
protocol.
1467
WAN
with an on-demand
timecut connection
Clients
Router 2
Router 1
with watchdog
spoofing
Watchdog
responses
Watchdog
packets
Novell
Server
#1 #2
LAN WAN 1 WAN 2 System
®
Intel Express Router 9200
LAN WAN 1 WAN 2 System
®
Intel Express Router 9200