Ip Routing; The Ip Routing Table - ELSA LANCOM Office Manual

R28 Technical basics
– RIP and SAP packets will only be sent if the information they contain has been
– RIPs and SAPs can be transferred at regular, selectable intervals. Information is
– The most economical handling of RIP and SAP packets involves transmitting the
IPX and SPX watchdogs:
These data packets are used by the server to determine whether workstation
computers, for example, are still active or if they can be logged off. To ensure that
these "Are you there?" packets for computers on a remote network do not
continually result in connections being established, you can set the responses to
these requests as follows:
– IPX watchdogs receive no response. The computers are logged off after a time
– IPX and SPX watchdogs can be responded to locally. This procedure is known as
– IPX and SPX watchdogs may of course be routed as normal but this frequently
Further information on IPX, the IPX router and the associated parameters can be found in
chapter 'Setup/IPX-module' in the reference manual.

IP routing

An IP router works between networks which use TCP/IP as the network protocol. This
only allows data transmissions to destination addresses entered in the routing table.
This chapter explains the structure of the IP routing table of an ELSA router, as well as
the additional functions available to support IP routing.

The IP routing table

Use the IP routing table to tell the router which remote station (which other router or
computer) it should send the data for particular IP addresses or IP address ranges to. This
type of entry is also known as a "route" since it is used to describe the path of the data
packet. This procedure is also called "static routing" since you make these entries
yourself and they remain unchanged until you either change or delete them yourself.
Naturally, there is "dynamic routing", too. The routers use the routes in this way to
exchange data between themselves and continually update it automatically. The static
ELSA LANCOM Office
modified in some way.
usually sent out in one minute intervals. The time interval between blocks can
be stretched to up to 60 minutes.
information only once, when a connection is established.
specified on the server.
spoofing. The router responds in place of the computers addressed, which are
then never logged off. It is also recommended that a time is set on the server
after which the devices in question are always logged off.
results in a connection being established.
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