nrparms - Configure the NET/ROM interface.
nrparms -nodes node +|- ident quality count port neighbour [digicall...]
nrparms -routes port nodecall [digicall...] +|- quality
This program is used to manipulate the routing tables of the NET/ROM network
layer, or to get and set many of the network and transport layer parameters
for the NET/ROM protocol. The program has three basic modes of operation, node
setting, neighbour setting and general parameter setting. The syntax for the
node and neighbour setting is taken from the original NET/ROM manual and is
therefore not very UNIXy but should be familiar to those familiar with
NET/ROMs or TheNet.
To set up a new route to a NET/ROM node in the routing tables you must use the
nodes option. All of the parameters are needed to add the node. It is probably
best to illustrate with an example:
nrparms -nodes GB7BPQ + NMCLUS 120 6 vhf G8ROU-3
This creates a new route to a distant node with the callsign GB7BPQ and the
alias NMCLUS, it has a quality of 120 (out of 255) and has an obsolescence
count of six and packets for that node should be sent on the AX.25 port named
vhf to my immediate neighbour G8ROU-3. The callsigns of the node and the
neighbour may be the same. For example to set up the node G8ROU-3 which is
also my immediate neighbour, I would use:
nrparms -nodes G8ROU-3 + MATLCK 200 6 vhf G8ROU-3
If the ident of the remote node is not known, it is possible to add a node with
a blank ident. To do this an ident of '*' must be entered on the command line.
Because of the command line expansion that shells do, the * must be escaped by
enclosing it in quotes.
It is also possible to remove a route to a distant node with the same command
except that the + is replaced by a -. The other parameters must also be
present. If the node has not other routes then the node will be deleted, and
the neighbour node that the connections go via may also be deleted if no other
node route uses it, and it is not a locked neighbour entry.
When setting up a new node, a new neighbour entry may also be created. This will
have a default value. For that neighbour to be meaningful in the automatic
routing process, it must have a more reasonable entry in the neighbours list.
To do this the routes option of the command must be used. An example:
nrparms -routes ax0 G8ROU-3 + 120
This will create (or update) the neighbour entry for G8ROU-3 with a quality of
120 and it will be locked, it will not create a node entry for the neighbour.
This quality will be used by the netromd
(8) program when calculating
route qualities via this neighbour. Normally once a neighbour has zero node
routes going via it, it will be deleted. Locking a neighbour prevents the
deletion from occurring. To unlock a neighbour entry, the same command is used
but with the + replaced by a -.
Jonathan Naylor G4KLX <email@example.com>