ELSA LANCOM Business 6000, Руководство пользователя

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Technical basics
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ELSA LANCOM Business 6000
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on the server, according to which the corresponding devices are shut
down in all cases, is also sensible.
IPX and SPX watchdogs can naturally be routed, thus frequently
establishing connection.
Additional information on IPX, IPX router, and accompanying parameters is
found in the chapter 'Setup/IPX module' in the reference manual.
7.5 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.
7.5.1 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 also “dynamic routing” too. The routers use the routes in this way to
exchange data between themselves and continually update it automatically.
The static routing table can hold up to 64 entries, the dynamic table can hold
128. The IP router looks at both tables when the IP RIP is activated.
You also use the IP routing table to tell the router the length of this route's
path so that it can select the most suitable route in conjunction with IP RIP
where there are several routes to the same destination. The default setting
for the distance to another router is 2, i.e. the router can be reached directly.
All devices which can be reached locally, such as other routers in the same
LAN or workstation computers connected via proxy ARP are entered with the
distance 0. The “quality level” of this route will be reduced if the entry
addressed has a higher distance (up to 14). “Unfavorable” routes like this will
only be used if no other route to the remote station in question can be found.