Buck Rogers K4ABT Betreibershandbuch PDF herunterladen (Seite 24)

The Packet Radio “2 N 1” Handbook by Buck Rogers K4ABT

Section 1; Packet Radio “The Basics” Section 2; The X1J4 System Node Operator’s (SNO) Handbook

Section II; TheNET X1J4 System Node Operators Handbook __ Page 24

When a Packet network user or the system node operator

(SNO) issues the “U” or users command, the node will

respond with the nodes; alias, callsign, SSID and a

number enclosed in parentheses; e.g. (721)

is the actual number of free buffers in the node. One

buffer consists of

32 bytes data and 4 bytes for linkage, 36 bytes in total.

All stored

information uses buffers within the nodes memory

(RAM) and the list of

other known nodes takes up buffers too.

The reason why this number of free buffers is made

known to the user, is to tell him the load on that node. If

for any reason TheNet X-1J4 runs out of free buffers, a

reset will be made causing all users to be disconnected.

During regular operation this is almost impossible, as

with the X-1J4 TheNet where the parameters are

properly set, there will never be a shortage of buffers (you

cannot load too many packets one after the other into

the node).

SYSTEM NODE OPERATOR OR “SNO”

The System Node Operator (SNO) can use Manager or

SYsop command to validate the SysOp/MAnager

privilege in the node. This enable the SNO to make

manual changes to the routing table, IDENT, to establish

a mnemonic node identifier, PARMS to set or display

various node parameters.

The RESET command can allow the SNO to perform a

warm-start, or by issuing “RESET *” the node can be

“cold-started” thereby resetting all the parameters to the

default settings that were originally burned into the X1J4

EPROM.

Each TheNET X1 node also supports the functions of an

ordinary AX.25 digipeater. Users need not make use of

the high-level networking functions of TheNET X1

unless they want to. Digipeater owners can upgrade their

sites to TheNET X1 nodes without disrupting users.

Multi-frequency TheNET X1 nodes provide multi-port

digipeating as well. Node identifiers may be used in lieu

of node callsigns when specifying a digipeated path.

When you issue a BYE, QUIT, or disconnect from the

node where you made access to the system, TheNET

X1J4 automatically takes care of disconnecting your

circuit to the nodes you used to downlink to the

destination station.

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