Routing Ipx Over Isdn - Bay Networks Nautica 200 Reference Manual

NauticaRS Release 4.1 Reference Guide

Routing IPX over ISDN

1-8
The Nautica Series has a complete set of Novell spoofing
algorithms, so it can emulate the remote network locally and
eliminate unnecessary transmissions over the ISDN link. The
Nautica router deals intelligently with IPX RIP packets, IPX
Watchdog Packets, Serialization packets and SPX packets from
each client and server.
IPX RIP Frames: Routing Information transmissions to update
the device routing tables are sent every 60 seconds.
IPX SAP Packets: IPX Service Advertising Packets are sent out
every 60 seconds, and inform the rest of the network what
services are available on the network (i.e. printing services etc.).
IPX Watchdog Frames: Periodic polls sent out to workstations
with a server session active, to find out if they are still attached.
These polls are sent out at about 10 minute intervals maximum,
ensuring workstations remain connected to the server even
though no data is being transmitted.
IPX Serialization Packets: Used to ensure the correct number of
licenses for the number of servers installed on the network.
Periodically every 66 seconds broadcasts to all other servers.
SPX Packets: This protocol is used by some application (i.e.
BTRIEVE and other databases, gateways etc.) and is a
connection-oriented, guaranteed delivery protocol. This is
achieved by SPX being contained within IPX, and sending idle
"Keep Alive" packets and generating acknowledgments to
received packets.
117237-C Rev. A