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DECnet-Plus
Network Control Language Reference
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If the characteristic manual L1 algorithm has the value
routing vector, this set must be empty, and the characteristic
phaseiv address must not be 0.0. If the characteristic
phaseiv address is 0.0, there must be at least one area
address.
manual L1 algorithm
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Support: L1
|
|
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Default: Routing vector
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Value: See description
|
Type of routing algorithm to be used within the area. You can modify
this characteristic only when the entity is disabled.
|
link state
|
The DECnet Phase V link-state algorithm is used.
|
|
routing vector
|
The Phase IV routing-vector algorithm is used.
|
manual L2 algorithm
|
Support: L2
|
|
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Default: Routing vector
|
Value: See description
|
Type of routing algorithm to be used at level 2. You can modify this
characteristic only when the entity is disabled.
|
link state
|
The DECnet Phase V link-state algorithm is used.
|
|
routing vector
|
The Phase IV routing-vector algorithm is used.
|
manual network entity titles
|
Support: End
|
|
|
Default: No NETs
|
Value: Set of NETs
|
Network entity titles (NETs) to be used for this node. If the
characteristic dna address format is set to false,
there must be at least one NET.
maximum buffers
|
Default: 100
|
Value: 1--65535
|
Specifies the guaranteed number of buffers for forwarding. More buffers
may be used if they are available. You can only increase the
characteristic value.
maximum path splits
|
Support: L1,L2
|
|
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Default: 2
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Value: 1--32
|
Maximum number of equal cost paths to split traffic between. You can
modify this characteristic only when the entity is disabled.
minimum lsp transmission interval
Specifies the minimum interval (in seconds) between transmissions of an
LSP from a particular source. When changed the timer must be reset.
phaseiv address
|
Support: All
|
|
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Default: 0.0
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Value: Phase IV address
|
Specifies a Phase IV compatible address for communication with other
Phase IV nodes. The default address, 0.0, indicates that no Phase IV
compatible address is provided for the node. You can modify this
characteristic only when the entity is disabled.
phaseiv area maximum cost
|
Support: L2
|
|
|
Default: 1022
|
Value: 1--1022
|
Maximum cost of a path to a reachable Phase IV area. This
characteristic is only used by the Phase IV routing algorithm (that is,
the routing-vector algorithm).
phaseiv area maximum hops
|
Support: L2
|
|
|
Default: 30
|
Value: 1--30
|
Maximum number of hops in a path to a reachable Phase IV area. This
characteristic is only used by the Phase IV routing algorithm (that is,
the routing-vector algorithm).
phaseiv broadcast routing timer
|
Support: L1,L2
|
|
|
Default: 10
|
Value: 1--65535
|
Maximum interval, in seconds, between broadcast routing messages on
broadcast circuits. This characteristic is only used by the Phase IV
routing algorithm (that is, the routing-vector algorithm).
phaseiv buffer size
|
Support: All
|
|
|
Default: 576
|
Value: 1--65535
|
Size, in octets, of buffers used for routing to adjacent Phase IV
nodes. This value is actually six octets greater than the maximum
buffer size, and does not include the headers for the Routing and Data
Link layers.
phaseiv maximum address
|
Support: L1,L2
|
|
|
Default: 1023
|
Value: 1--1023
|
Maximum node number within the Phase IV area. This characteristic is
only used by the Phase IV routing algorithm (that is, the
routing-vector algorithm).
phaseiv maximum area
|
Support: L2
|
|
|
Default: 63
|
Value: 1--63
|
Maximum Phase IV area number. This characteristic is only used by the
Phase IV routing algorithm (that is, the routing-vector algorithm).
phaseiv maximum cost
|
Support: L1,L2
|
|
|
Default: 1022
|
Value: 1--1022
|
Maximum cost of a path to a reachable node within the Phase IV area.
This characteristic is only used by the Phase IV routing algorithm
(that is, the routing-vector algorithm).
phaseiv maximum hops
|
Support: L1,L2
|
|
|
Default: 30
|
Value: 1--30
|
Maximum number of hops in a path to a reachable node within the Phase
IV area. This characteristic is only used by the Phase IV routing
algorithm (that is, the routing-vector algorithm).
phaseiv maximum visits
|
Support: All
|
|
|
Default: 63
|
Value: 1--63
|
Maximum number of visits a packet can make to this node before Routing
assumes that the packet is looping. This characteristic is only used by
the Phase IV routing algorithm (that is, the routing-vector algorithm).
phaseiv prefix
|
Support: All
|
|
|
Default: Hex 49
|
Value: Address prefix
|
Prefix for Phase IV addresses. If the characteristic phaseiv
address is not 0.0, a DECnet-Plus area address is formed by adding
the area portion of the Phase IV address to this prefix. You can modify
this characteristic only when the entity is disabled.
probe rate
|
Support: End
|
|
|
Default: 20
|
Value for Digital UNIX: 1--65535
|
|
Default: 1000
|
Value for OpenVMS: 1--65535
|
Number of packets after which a probe is sent. This characteristic is
used only on multilink end systems, on circuits without cache entries
for the destination.
protocols
|
Support: IP
|
|
|
Default:
|
Value: IP or ISO 8473
|
The protocol stacks that are enabled on this system. These can be
either or both of the above values. The value of this characteristic
derives from an argument to the create command. You cannot
modify this characteristic.
redirect holding time
|
Support: L1,L2
|
|
|
Default: 600
|
Value: 1--65535
|
Holding time, in seconds, to be specified in Redirect PDUs generated by
this node.
rip receive metric class
|
Support: L2,IP
|
|
|
Default: External
|
Value: External or internal
|
The class to be associated with routes received through RIP. This value
may be overridden by a routing receive route entity. This
characteristic is supported only if the routing protocols
supported characteristic includes the RIP routing protocol.
rip send local metric
|
Support: L2,IP
|
|
|
Default: 1
|
Value: 0--16
|
The metric value used by RIP when announcing routes derived from local
information. This value is used unless it is overridden by a
routing send route entity. This characteristic is supported
only if the routing protocols supported characteristic
includes the RIP routing protocol.
rip send metric classes
|
Support: L2,IP
|
|
|
Default: Internal
|
Value: Set of external, internal
|
Routes received through routing protocols other than RIP with metric
classes in this set are candidates for announcement in RIP messages
(subject to the route propagation policy in force). Routes with metric
classes not in this set will not be announced.
Each value in this set may be overridden separately by a more specific
propagation policy specified by a routing send route or
routing send route source entity. This characteristic is
supported only if the routing protocols supported
characteristic includes the RIP routing protocol.
rip send replacement metric
|
Support: L2,IP
|
|
|
Default: 1
|
Value: 0--16
|
The metric value used by RIP when announcing routes derived through
other routing protocols. This value is used unless it is overridden by
a routing send route entity. This characteristic is supported
only if the routing protocols supported characteristic
includes the RIP routing protocol.
route propagation
|
Support: L2,IP
|
|
|
Default: No route propagation
|
Value: Set of protocol pairs (see below)
|
The default route propagation to be performed. The set may include the
following protocol pairs:
|
EGP to IS-IS
|
IS-IS to RIP
|
|
EGP to RIP
|
RIP to EGP
|
|
IS-IS to EGP
|
|
If a particular value is not present in the set, routes are not
propagated between those two protocols in that direction. This
characteristic is supported only if the routing protocols
supported characteristic includes either of the EGP or RIP routing
protocols.
routing mode
|
Support: End
|
|
|
Default: Integrated propagation
|
Value: Segregated or Integrated
|
Determines the behavior of the forwarding algorithm. When the routing
mode is set to Segregated, data being transmitted to Phase IV
destination addresses is sent in Phase IV format packets, to the
adjacent Phase IV router, if available. In Integrated mode, data is
sent to Phase V (OSI) router adjacencies in CLNP packets, if possible.
This characteristic can only be set when routing is disabled. For
example, to switch to segregated mode from the default:
NCL> disable routing
NCL> set routing routing mode = segregated
NCL> enable routing
NCL> enable routing circuit *
routing protocols supported
The set of routing protocols supported by this implementation. You
cannot modify this characteristic.
segment buffer size
|
Support: All
|
|
|
Default: 570
|
Value: 0--65535
|
Maximum segment size, in octets, to be used by the Transport layer. A
value of zero means that the segment size is unlimited.
send source quench
|
Support: L1,L2,IP
|
|
|
Default: False
|
Value: True or false
|
Specifies whether an ICMP source quench packet is sent when an IP
packet is discarded because of congestion. If false, ICMP
source quench packets are never sent.
source quench interval
|
Support: L1,L2,IP
|
|
|
Default: 100
|
Value: 1--65535
|
Minimum time, in milliseconds, between transmission of successive ICMP
source quench packets.
summary addresses
|
Support: L2,IP
|
|
|
Default: No addresses
|
Value: Set of summary addresses
|
Summary address information to be included in level 2 link state
packets sent by this node.
time to live
|
Support: IP
|
|
|
Default: 35
|
Value: 1--255
|
Specifies the value to be placed in the time to live field of
originating IP packets. This value should be greater than the maximum
number of hops in any path on the network.
type
|
Support: All
|
|
|
Default: No default
|
Value: See description
|
Routing type of this node. You cannot modify this characteristic.
|
endnode
|
The node is an end node.
|
|
L1router
|
The node is a level 1 router.
|
|
L2router
|
The node is a level 2 router.
|
version
|
Default: Current version number
|
|
Version number of the DNA Network Routing layer architecture
specification to which this implementation conforms. You cannot modify
this characteristic.
21.2.3 Counter Attributes
address unreachable pdus discarded
Number of data PDUs that have been discarded because the destination
was unreachable.
aged ip packets discarded
Number of IP packets that have been discarded because their lifetime
has expired.
aged pdus discarded
Number of data PDUs that have been discarded because their lifetime has
expired.
attempts to exceed maximum sequence number
Number of times an attempt was made to increase the sequence number of
a link state packet beyond the maximum allowed.
corrupted lsps detected
Number of times the corrupted lsp detected event has been
generated.
creation time
Time this entity was created.
error reports generated
Number of error report PDUs (or Phase IV data packets with RTS
set) that have been generated.
icmp address mask reply messages received
Number of ICMP Address Mask Reply messages received.
icmp address mask reply messages sent
Number of ICMP Address Mask Reply messages sent.
icmp address mask request messages received
Number of ICMP Address Mask Request messages received.
icmp address mask request messages sent
Number of ICMP Address Mask Request messages sent.
icmp destination unreachable messages received
Number of ICMP Destination Unreachable messages received.
icmp destination unreachable messages sent
Number of ICMP Destination Unreachable messages sent.
icmp echo reply messages received
Number of ICMP Echo Reply messages received.
icmp echo reply messages sent
Number of ICMP Echo Reply messages sent.
icmp echo request messages received
Number of ICMP Echo Request messages received.
icmp echo request messages sent
Number of ICMP Echo Request messages sent.
icmp message send errors
Number of ICMP messages that could not be sent because of problems in
the ICMP layer. Note that this value does not include errors that occur
outside the ICMP layer, such as forwarding errors.
icmp messages received
Number of ICMP messages received. This value includes messages counted
by the icmp received message errors counter.
icmp messages sent
Number of ICMP messages of all types that the node has attempted to
send. Note that this figure includes the value of the icmp message
send errors counter.
icmp parameter problem messages received
Number of ICMP Parameter Problem messages received.
icmp parameter problem messages sent
Number of ICMP Parameter Problem messages sent.
icmp received message errors
Number of ICMP messages received with any type of error.
icmp redirect messages received
Number of ICMP Redirect messages received.
icmp redirect messages sent
Number of ICMP Redirect messages sent.
icmp source quench messages received
Number of ICMP Source Quench messages received.
icmp source quench messages sent
Number of ICMP Source Quench messages sent.
icmp time exceeded messages received
Number of ICMP Time Exceeded messages received.
icmp time exceeded messages sent
Number of ICMP Time Exceeded messages sent.
icmp timestamp reply messages received
Number of ICMP Timestamp Reply messages received.
icmp timestamp reply messages sent
Number of ICMP Timestamp Reply messages sent.
icmp timestamp request messages received
Number of ICMP Timestamp Request messages received.
icmp timestamp request messages sent
Number of ICMP Timestamp Request messages sent.
icmp unknown message types received
Number of ICMP messages received with an unknown message type.
ip address unreachable packets discarded
Number of IP packets discarded because their destination was
unreachable.
ip destination address error packets discarded
Number of IP packets discarded because of an invalid destination
address or the address of an unsupported class.
ip packet format errors
Number of IP packets discarded because of a format error in the IP
header.
ip packets discarded
Number of IP packets discarded for either of the following reasons:
- Error in the IP header, such as bad checksum or version number
mismatch. Note, however, that format errors and time to live expired
are excluded.
- Packet received through data link broadcast when forwarding is not
allowed.
ip protocol unreachable packets discarded
Number of IP packets received for the local system and discarded
because there was no port with the protocol type specified in the IP
datagram PROTO field.
ip source address error packets discarded
Number of IP packets discarded because of an invalid source address or
the address of an unsupported class.
lsp L1 database overloads
Number of times the lsp level 1 database overload event has
been generated.
lsp L2 database overloads
Number of times the lsp level 2 database overload event has
been generated.
manual addresses dropped from area
Number of times an address in the manual area addresses set is
ignored when computing an area address. (Each address that is ignored
is counted separately.)
own lsp purges
Number of times the own lsp purged event has been generated.
pdu format errors
Number of data PDUs that have been discarded because of format errors.
phaseiv translation failures
Number of times the phaseiv translation failures event has
been generated.
sequence number skips
Number of times the sequence number skipped event has been
generated.
unsupported options
Number of data PDUs that have been discarded because they specified
unsupported options in their header.
21.2.4 Preset Attributes
Preset attributes are similar to characteristics in that their values
control the way in which the Routing module operates. However, unlike
characteristics, you cannot alter preset attribute values using the
set command.
broadcast lsp transmission interval
|
Support: L1,L2
|
|
|
Default: 33
|
Value: 1--65535
|
Interval, in milliseconds, between the transmission of link state
packets (LSPs) on a broadcast circuit.
complete snp interval
|
Support: L1,L2
|
|
|
Default: 10
|
Value: 1--600
|
Interval, in seconds, between generation of complete sequence number
packets (CSNPs) by a designated router on a broadcast circuit.
default eshello timer
|
Support: All
|
|
|
Default: 600
|
Value: 1--65535
|
Value to be used for the current suggested Hello timer, in the absence
of any suggested value from the intermediate system (IS).
On routers, this is the value to be suggested when the router is not
required to poll the ES configuration. In routers, this value is
suggested by the Suggested ES Configuration Timer option in IS Hellos.
dr isishello timer
|
Support: L1,L2
|
|
|
Default: 1
|
Value: 1--65535
|
Interval, in seconds, between the generation of IS-IS Hello PDUs by the
designated router.
es cache holding time
|
Support: End
|
|
|
Default: 600
|
Value: 1--65535
|
Holding time, in seconds, for an entry in the node's end-node cache
database.
es cache width
|
Support: End
|
|
|
Default: 3
|
Value for Digital UNIX: 1--4294967295
|
|
Default: 3
|
Value for OpenVMS: 1--65535
|
Maximum number of LAN address entries in the node's end-node cache
database on a broadcast circuit.
holding multiplier
|
Support: All
|
|
|
Default: 3
|
Value: 2--63
|
Value by which to multiply the Hello timer to obtain the holding timer
value for ES and IS Hellos and for point-to-point, router-to-router
Hellos.
inactive selector
|
Support: All
|
|
|
Default: 33
|
Value: 2-255
|
This is the selector value identifying the port to which incoming
Inactive Subset PDUs are to be sent.
initialization timer
|
Support: All
|
|
|
Default: 6
|
Value: 1--63
|
Delay, in seconds, between initialization of a data link and sending a
DECnet-Plus message on a DDCMP circuit.
isis format
|
Support: L1,L2
|
|
|
Default: 0 (ISO)
|
Value: (ISO) or 1 (DNA Private)
|
This attribute controls the protocol identification to be used for "DNA
Private" PDUs. On broadcast circuits, this characteristic also controls
the SAP on which they are transmitted.
isis holding multiplier
|
Support: L1,L2
|
|
|
Default: 10
|
Value: 2--63
|
Value by which to multiply the IS-IS Hello timer to obtain the value of
the holding timer for LAN level 1 and level 2 router-to-router Hellos.
maximum age
|
Support: L1,L2
|
|
|
Default: 1200
|
Value: 1--65535
|
Number of seconds before an LSP is considered to be expired.
maximum lsp generation interval
|
Support: L1,L2
|
|
|
Default: 900
|
Value: 60--900
|
Maximum interval, in seconds, between link state packets (LSPs)
generated by this node.
minimum lsp generation interval
|
Support: L1,L2
|
|
|
Default: 30
|
Value: 1--65535
|
Minimum time, in seconds, between generation of LSPs by this node.
minimum lsp transmission interval
|
Support: L1,L2
|
|
|
Default: 5
|
Value: 5--30
|
Minimum interval, in seconds, between retransmissions of an LSP.
multicircuit eshello timer
|
Support: End
|
|
|
Default: 10
|
Value: 1--65535
|
Value to be used for the current suggested Hello timer on a
multicircuit end node with more than one circuit enabled, in the
absence of any suggested values from the IS.
originating L1 lsp buffer size
|
Support: L1,L2
|
|
|
Default: 1492
|
Value: 128--1492
|
Maximum size of level 1 LSPs and SNPs originated at this node.
originating L2 lsp buffer size
|
Support: L2
|
|
|
Default: 1492
|
Value: 128--1492
|
Maximum size of level 2 LSPs and SNPs originated at this node.
partial snp interval
|
Support: L1,L2
|
|
|
Default: 2
|
Value: 1--65535
|
Minimum interval, in seconds, between sending partial SNPs.
poll eshello rate
|
Support: All
|
|
|
Default: 50
|
Value: 1--65535
|
Interval, in seconds, between ES Hellos when a router requires to poll
the ES configuration.
queue threshold
|
Support: L1,L2
|
|
|
Default: 1
|
Value: 1--63
|
Average queue length at a router, above which the "congestion
experienced" bit will be set in a forwarded data PDU.
waiting time
|
Support: L1,L2
|
|
|
Default: 60
|
Value: 1--65535
|
Delay, in seconds, between routing databases being in the
waiting state and entering the on state.
zero age lifetime
|
Support: L1,L2
|
|
|
Default: 60
|
Value: 1--65535
|
Time, in seconds, for which the purge header of an expired LSP is
retained.
21.2.5 Status Attributes
area addresses
A set of area addresses. If the node is an end node, these are the area
address portions of the NETs of all adjacent routers. If the node is a
level 1 or level 2 router, this set is the union of the sets of manual
area addresses reported in all level 1 LSPs received by this router.
egp port
Name of the routing port entity used for sending and receiving
EGP messages. This attribute is set when a routing egp group
entity is enabled.
icmp port
Name of the routing port entity used for sending and receiving
ICMP messages. This attribute is set when the routing module
is enabled and the protocols characteristic includes the value
IP.
L1 state
State of the level 1 database.
|
off
|
Routing is disabled.
|
|
on
|
Routing is enabled and operating correctly.
|
|
waiting
|
Routing has received routing information that it cannot store and is
waiting for the overload to be removed.
|
L2 state
State of the level 2 database.
|
off
|
Routing is disabled.
|
|
on
|
Routing is enabled and operating correctly.
|
|
waiting
|
Routing has received routing information that it cannot store and is
waiting for the overload to be removed.
|
nearest L2 router adjacencies
Names of adjacencies to be used for forwarding to the nearest level 2
router. If the node is a level 2 router adjacent to other areas, or if
it is a level 1 router in an area with no attached level 2 routers,
this set is empty.
rip port
Name of the udp port entity used by the routing module for
sending and receiving RIP messages. This attribute is set when a
routing circuit entity is enabled with its rip state
characteristic set to any value other than off.
state
State of the routing entity.
|
off
|
The entity is disabled.
|
|
on
|
The entity is enabled.
|
uid
Entity's unique identifier, which is generated when the entity is
created.
21.2.6 Event Messages
address unreachable pdu discard
Generated when a data PDU is discarded because the destination address
is unreachable.
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OSSG Documentation
2-DEC-1996 12:48:25.21
Copyright © Digital Equipment Corporation 1996. All Rights Reserved.
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