verification
Specifies whether the router compares a verification string on the
router to verification data in an incoming initialization message. If
they do not match, the X.25 circuit must be reinitialized. Specify
enabled or disabled.
executor
argument
Defines or sets arguments (that is, the executor) global to DNA in the
permanent (define) or volatile (set) database.
Most of these arguments reduce the efficiency of the router,and increase
the load on the circuits, as they are made larger. They can also increase
memory requirements. They should not be used unnecessarily in excess of
the values required for the actual network configuration.
For set, the executor must be in the off state to modify numeric arguments
or type in the volatile database. (Unlike DECnet-VMS, the set executor
state on command is valid when the executor state is off.) These changes
take place immediately without rebooting the router.
address [area.node]
Sets the executor’s node address, the node ID of this router.Area
range: 1 to 63. The area and the node must be less than executor
maximum area. Node range is 1 to 1023. The default 0.0 is illegal.
Note: DNA will not be enabled if the executor address is not set to
a legal value.
area maximum cost [number]
Maximum cost allowed between this level 2 router and any other
level 2 router. If the best route to an area is more costly than this,
that area will be considered unreachable. Maximum: 1022. Default:
1022. This argument does not apply to level 1 routers. It should be
greater than the maximum legal cost to the most distant area. A
suggested value is 25 times “area maximum hops”.
area maximum hops [number]
Maximum number of hops allowed between this level 2 router and
any other level 2 router. If the best route to an area requires more
hops than this, that area will be considered unreachable. Maximum:
30. Default: 30. This argument does not apply to level 1 routers. It
should be about twice the longest path length (in hops) that is
expected.
The hop count is used by routing only to speed the decay of routes
to unreachable areas. The area maximum hops may be reduced to
cause unreachable areas to become unreachable more quickly.
broadcast routing timer [range]
Specifies how often level 1 (and 2 in a level 2 router) routing
messages are sent, in seconds. This is how often they will be sent
in the absence of any cost or adjacency changes. This protects the
routing database from corruption. At least partial routing updates
are sent automatically if any cost or adjacency changes. Range: 1
to 65535. Default: 180. Lower values increase the overhead for this
and all adjacent routers. Larger values increase the time required to
correct the routing database if a partial routing update message is
lost.
DNA IV Configuration and Monitoring Commands
Chapter8. Configuring and Monitoring DNA IV 269