Ipx Serialization Packets; Sequenced Packet Exchange (Spx) - Intel ER8100STUS - Express 8100 Router Reference Manual

IPX watchdog spoofing

IPX Serialization Packets

IPX serialization packets
Discarded by the Intel
Express 8100 Router

Sequenced Packet Exchange (SPX)

Sequenced Packet
eXchange (SPX)
79
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.
#1
Novell
Server
Watchdog
responses
Watchdog
packets
LAN WAN 1 WAN 2 System
Router 1
with watchdog
spoofing
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.
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.
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.
WAN
Intel Express Router 9200
®
with an on-demand
timecut connection
Novell IPX Routing
Novell Routing Concept
#2
Intel Express Router 9200
®
LAN WAN 1 WAN 2 System
Clients
Router 2
1467