Changing a DECnet circuit cost
Circuit costs are the mechanism DECnet uses for routing. An incorrect
setting for a circuit cost can have a drastic affect on worldwide
DECnet traffic. Changes to circuit costs require the agreement of
the CERN DECnet coordinator (CS Group). If an urgent request is received
in her absence, then the cost can be changed using the commands below.
However, the request must come from or be agreed to by the relevant
European HEP DECnet Manager. A list of the managers and their contact
details is given in a later section. The example below changes the
cost of the circuit x25-spain on cernr1 to the value 23.
Invoke NCP on any DECnet node and type:
<![CDATA[
NCP> set exec node cernr1 user xxx pass yyy
NCP> set circ x25-spain state off
NCP> set circ x25-spain cost 23
NCP> set circ x25-spain state on
NCP> exit
]]>The above commands only change the circuit cost in the volatile data
base of the router itself so the changes will be lost next time the
router reboots. Normally it will be sufficient to inform the DECnet
coordinator so that she can update the permanent data base on her
return. If you need the permanent data base updated before her return
then follow the instructions in the section below.