1 /ALL
Sets data for all LAN devices. If you specify a device name, all
matching LAN devices are selected, for example: E to select all
Ethernet devices, F for FDDI, I for Token Ring, EW to select all
Ethernet PCI Tulip devices.
2 /DESCRIPTION
/DESCRIPTION="quoted string"
A quoted string describing the device for display purposes.
3 /DEVICE_SPECIFIC
/DEVICE_SPECIFIC=(FUNCTION="xxxx",VALUE=(n1,n2,n3...n16))
/NODEVICE_SPECIFIC
Allows some device-specific parameters to be adjusted. These
are useful for debug purposes or for experiments while doing
performance measurements. Like other LANCP commands which affect
devices, this command requires SYSPRV privilege.
Specify the negated qualifer to clear all device-specific
parameter data.
These functions are described in a text file on the system,
SYS$HELP:LAN_COUNTERS_AND_FUNCTIONS.TXT.
4 /DLL
/DLL or MOPDLL=(enable-option, exclusive-option, size-option,
knownclientsonly-option)
Provides the MOP downline load service settings for the device.
Note that defaults apply to creation of an entry in the device
database. If an existing entry is being modified, fields not
specified remain unchanged.
You can specify the following keywords with this qualifier:
o enable-option
ENABLE
DISABLE (default)
Specify ENABLE or DISABLE to indicate that MOP downline load
service should be enabled or disabled for the device.
o exclusive-option
EXCLUSIVE
NOEXCLUSIVE (default)
Specify EXCLUSIVE to indicate that no other provider of MOP
downline load service is allowed on the specified LAN device
at the same time as LANACP. Specify NOEXCLUSIVE to indicate
that the LAN MOP downline load service can coexist with other
implementations (in particular, the DECnet Phase IV and DECnet
Plus implementations that include MOP support).
Note that when you select NOEXCLUSIVE, LANACP responds only
to MOP downline load requests directed to nodes defined in the
LAN node database.
o size-option
SIZE=value
Use SIZE=value to specify the size in bytes of the file data
portion of each downline load message. The permitted range
is 246 to 1482 bytes. The default value is 246 bytes, which
should allow any client to load properly. Note that some
clients may not support the larger size.
The recommended size for better load performance and less
server overhead is the largest size that results in successful
loads of all clients. The 1482 value is derived from the
maximum packet size for CSMA/CD (Ethernet) of 1518 bytes less
the 802e header and CRC (26 bytes) and MOP protocol overhead
(10 bytes).
You can override the size on a per-node basis. See the SET
NODE commands for details.
o knownclientsonly-option
KNOWNCLIENTSONLY
NOKNOWNCLIENTSONLY (default)
Specify KNOWNCLIENTSONLY to indicate that MOP downline
load requests should be serviced only for clients defined
in the LAN permanent node database. When you select
NOKNOWNCLIENTSONLY, LANACP searches the LAN$DLL directory
for any images requested by clients that are not defined in
the LAN node database.
Note that this option is not available when NOEXCLUSIVE mode
has been selected. In NOEXCLUSIVE mode, LANACP services MOP
downline load requests only for clients defined in the LAN
node database.
5 /MAX_BUFFERS
/MAX_BUFFERS=value
Sets the maximum number of receive buffers to be allocated and
used by the LAN driver for the LAN device.
6 /MIN_BUFFERS
/MIN_BUFFERS=value
Sets the minimum number of receive buffers to be allocated and
used by the LAN driver for the LAN device.
7 /PERMANENT
/PERMANENT (SET DEVICE only)
Updates the device entries in the LAN volatile device database
with any data currently set in the permanent database. This
allows you to update the volatile database after changing data
in the permanent database, rather than repeating the commands for
each updated entry to apply the changes to the volatile database.
8 /TAG
/TAG=value
Specifies the IEEE 802.1Q tag for the VLAN device.
value is the IEEE 802.IQ tag number.
9 /TRACE
/TRACE=size-option, mask-option, stop-option
/NOTRACE
Provides the LAN driver trace settings for the device. By
default, most LAN drivers do tracing of error conditions and
state changes. Tracing is controlled by an event mask that
selects the events to trace, a stop mask that specifies when
to stop tracing, and the size of the trace buffer.
You can change tracing settings at any time. The LAN driver
allocates the trace buffer from non-paged pool. You can calculate
the amount of pool needed by multiplying the number of entries by
the size of each entry, 32-bytes.
The impact of tracing on the system is negligible for error
and state change events, more significant when all events are
selected, and very significant when full packet tracing is
enabled.
The command SHOW DEVICE/TRACE displays trace results as well as
the trace mask.
You can specify the following keywords with this qualifier:
o size-option
SIZE=value
Use SIZE=value to specify the size of the trace buffer in
entries, each 32 bytes. The default is 2048 entries. The
permitted range is 256 to 1000000.
The size MOD 3 encodes the amount of packet data to include,
either 35 bytes, 66 bytes, 97 bytes, or the entire packet.
o mask-option
MASK=(value1,value2)
Use MASK=(value1,value2) to specify the trace mask to select
which type of entries should be collected in the trace
buffer. The first 32 bits consist of events common to most
LAN drivers. The second 32 bits consist of events specific to
the LAN driver for the specified device.
o stop-option
STOP=(value1,value2)
Use STOP=(value1,value2) to specify the trace mask to select
which type of entries should stop tracing. When a trace entry
is made that matches one of the bits in the stop mask, the
trace mask is cleared so that you can look at the trace data
accumulated so far.
10 /UPDATE
/UPDATE (DEFINE DEVICE only)
Adds LAN devices that are not currently in the LAN permanent
device database to that database. The initial entry for the
device uses default values for all parameters. To update the
permanent database with current information from the volatile
database, use the DEFINE DEVICE command with the /VOLATILE
qualifier. You can combine the /UPDATE and /VOLATILE qualifiers
in a single DEFINE DEVICE command.
/UPDATE (SET DEVICE only)
Adds LAN devices that are not currently in the LAN volatile
device database to that database. The initial entry for the
device uses default values for all parameters. To update the
volatile database with current information from the permanent
database, use the SET DEVICE command with the /PERMANENT
qualifier. You can combine the /UPDATE and /PERMANENT qualifiers
in a single SET DEVICE command.
11 /VLAN_DEVICE
/VLAN_DEVICE=device-name
/NOVLAN_DEVICE
Specifies the physical LAN device that is to host the VLAN
device. The /NOVLAN_DEVICE qualifier requests deactivation of
the VLAN device.
When deactivating the VLAN device, the device-name is not
required because the VLAN driver knows which device is hosting
the VLAN device.
Note that a VLAN device cannot be deactivated if any applications
continue to use the device.
Note that the LAN failover device (LLx) is considered as a physical
LAN device. It acts as a single failover device and represents a
set of physical LAN devices.
12 /VOLATILE
/VOLATILE (DEFINE DEVICE only)
Updates the device entries in the LAN permanent device database
with any data currently set in the volatile database. This allows
you to update the permanent database after changing data in the
volatile database, rather than repeating the commands for each
updated entry to apply the changes to the permanent database.