Buck Rogers K4ABT Manual do Operador descarregar pdf (Página 63)

The Home of Packet Radio
Parameter 2 Worst quality for auto-update; ( default=60, minimum=0, maximum=255) 
Defines the poorest route quality that can be added to the node's automatic routing table. The system node operator 
(SNO) can use this parameter to limit the automatic routing update function to accept only higher-quality routes. In 
addition, the automatic update function can be disabled altogether by setting this parameter to zero. 
Parameter 3 Channel 0 (Radio Port) quality; (default=60, minimum=0, maximum=255) 
Defines the quality of the radio channel connected to the node's HDLC port. The system node operator (SNO) 
should set this parameter to an appropriate quality value in accordance with the speed, reliability, and congestion 
anticipated on the channel. The default value of 192 is appropriate for a 1200-baud user-accessible frequency. 
Parameter 4 Channel 1 (RS232 Port) quality; ( default=255, minimum=0, maximum=255) 
Defines the quality of the TNC-to-TNC interconnect channel connected to the node's RS232 port. The system node 
operator (SNO) should set this parameter to an appropriate quality value in accordance with the speed, reliability, 
and congestion anticipated on the channel. The default value of 255 is appropriate for a 9600-baud two-modem 
interconnect cabled gateway. 
Parameter 5 Obsolescence count initializer; ( default=9, minimum=0, maximum=255) 
Defines the initial value given to the obsolescence counter of a route that has been recently added or updated by the 
node's automatic routing table. The obsolescence count of a route is also reinitialized to this value whenever the 
route is successfully used or when the period set to the noted value shown in the STATS table of the X-1J4 node. 
The obsolescence count of a route is decremented once each auto-update broadcast interval (see parameter 7). 
Periodic decrementing of route obsolescence counts can be disabled altogether by setting this parameter to zero (0). 
Parameter 6 Obsolescence count minimum to be broadcast ( default=5, minimum=1, maximum=255) 
In the X-1J4 node, this parameter defines the minimum obsolescence count threshhold below which a route will not 
be included in the node's automatic routing broadcasts. The purpose of this threshhold is to prevent the node from 
broadcasting out dated routing information to other nodes. Under normal circumstances this parameter should be 
assigned a value no greater than the value of parameter 5. If parameter 5 is greater, the X-1J4 node's broadcasts will 
NOT include destination nodes other than itself. 
Parameter 7 Auto-update broadcast interval (seconds) ( default=1800, minimum=0, maximum=65535) 
Defines the number of seconds between automatic routing broadcasts issued by the node. The default value of 3600 
specifies an hourly broadcast. X-1J4 node broadcasts can be disabled altogether by setting this parameter to zero 
(0). 
Parameter 8 Network TIME TO LIVE initializer ( default=16, minimum=0, maximum=255) 
Defines the initial value of the time-to-live; field in the Network Header of all network-layer frames originated by 
this node. The time-to-live field is decremented by each intermediate node that relays the frame. If the time-to-live 
value ever reaches zero, the frame is discarded. This protects the network against frames living forever as the result 
of a routing loop. 
Parameter 9 Transport timeout (seconds) ( default=180, minimum=5, maximum=600) 
Defines the number of seconds between transport-layer retries. 
Parameter 10 Transport maximum tries ( default=3, minimum=2, maximum=127) 
Defines the maximum number of transport-layer tries attempted before a circuit failure is reported. 
Parameter 11 Transport acknowledge delay (seconds) ( default=2, minimum=1, maximum=60) 
Defines the number of seconds' delay used by the transport layer from the time it receives an information message 
until it sends an information-acknowledge message. The purpose of this delay is to give the acknowledgement an 
opportunity to be added to another outgoing information frame or packet. 
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Buck Rogers K4ABT Manual do Operador Página 63

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