ELSA LANCOM Business 6000, Руководство пользователя

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Technical basics
141
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ELSA LANCOM Business 6000
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EN
routes only to the router which has not propagated the route. This procedure
is called split horizon.
Should it become necessary to disclose redundant routes in the local
network, the function 'loop-propagating' can be used (
Setup/IPX-
module/LAN-config/Loop-prop.
). The routes thus acquired are
designated in the RIP table as 'LOOP'. Even though the distribution of
redundant routes is not prohibited according to Novell specifications, it
should not be used if possible and so the default setting is 'OFF'.
7.4.8 Exponential backoff
In order to receive routing information (RIP and SAP information) of the IPX
remote stations that is necessary for the operation, the IPX router of the
device attempts to establish corresponding connections after the device is
turned on. In case this is not possible because of a faulty configuration of the
IPX router, the exponential backoff algorithm prevents connections from
being established thus saving costs.
If the first connection attempt to a remote station is not successful, the router
attempts to reach the remote station after a continuously increasing waiting
period. The waiting period is determined as follows:
The first dial occurs after 10 + x seconds. x is a digit between 0 and 10.
The second attempt begins approximately 10 + x seconds after the first
unsuccessful attempt. x now stands for a digit between 0 and 20.
The top value for x is doubled with each new attempt. After 16
unsuccessful attempts, the router finally stops dialing. After 16 attempts,
a maximum of a day has gone by as the result of the continuous increase
of the waiting period.
If all attempts to dial the remote station continuously fail, the route is
blocked. Further connection attempts can be made only when changing the
entry in the routing table.
The time remaining until the next dial and the number of attempts to
establish connection can be found in the network statistics (
status/IPX
statistics/IPX-router statistic/Networks
.