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       netromd - Send and receive NET/ROM routing messages


       netromd [-c] [-d] [-i] [-l] [-p pause] [-q quality] [-t interval] [-v]


       For  a NET/ROM based network to operate correctly, a periodic broadcast
       of routing information needs to occur. Typically this occurs once every
       hour  on  every  port  which  is expected to carry NET/ROM traffic. The
       purpose of netromd is to send and receive NET/ROM  routing  broadcasts.
       To operate correctly a set of parameters that corresponds to each AX.25
       port needs to be passed to the program. This information is encoded  in
       a  configuration  file,  by default which is /etc/ax25/nrbroadcast with
       each  line  representing  one   port,   see   the   manual   page   for

       To   cut  down  the  length  of  these  routing  broadcasts,  only  the
       information about the highest quality neighbour for a  particular  node
       is  transmitted.   The  transmission is also limited to those node that
       have a certain minimum value in their obsolesence count, this value  is
       decremented  every  time  a  routing  broadcast  is transmitted, and is
       refreshed  by  receiving  a  routing  broadcast  which  contains   that
       particular node.

       The value of the default quality is traditionally assigned a value that
       represents the quality of the radio links on that port. A higher number
       representing  better  radio  links  with 255 (the maximum) reserved for
       wire connections. The practise in the UK is to set the default  quality
       to  a  low  value,  typically  10,  and  manually  set  up  the trusted
       neighbouring nodes in the neighbour list manually.  The  worst  quality
       for  auto-updates value is a way to filter out low quality (ie distant)

       The verbose flag may be either 0 or 1,  representing  no  and  yes.  By
       specifying  no,  the  program  will  only  generate  a  routing message
       containing information about the  node  on  which  it  is  running,  by
       specifying  the  yes  option,  all the information in the nodes routing
       tables will be transmitted.  The quality advertised for the other  node
       callsigns on this machine may be set using the -q option.

       Between  each transmission netromd pauses for five seconds (default) in
       order to avoid flooding the channels that it  must  broadcast  on.  The
       value of this delay is settable with the -p option.


       -c              Forces    strict    compliance    to    Software   2000
                       specifications. At present  this  only  determines  how
                       node  mnemonics  with  lower  case  characters  will be
                       handled.   With  compliance  enabled  mixed  case  node
                       mnemonics  will  be  ignored.  The default is to accept
                       node mnemonics of mixed case.

       -d              Switches on debugging messages,  the  default  is  off.
                       Logging must be enabled for them to be output.

       -i              Transmit  a  routing broadcast immediately, the default
                       is to wait for  the  time  interval  to  elapse  before
                       transmitting the first routing broadcast.

       -l              Enables  logging  of  errors  and debug messages to the
                       system log. The default is off.

       -p pause        Sets the  delay  between  transmissions  of  individual
                       routing broadcast packets. The default is five seconds.

       -q quality      Sets the quality of the subsidiary  nodes  relative  to
                       the main node. The default is 255.

       -t interval     The   time  interval  between  routing  broadcasts,  in
                       minutes. The default is 60 minutes.

       -v              Display the version.




       ax25(4), axports(5), nrbroadcast(5), netrom(4), nrparms(8).


       Jonathan Naylor G4KLX <>