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ULLA (Unified Link Layer API) - access link layer information
ullaNotification
-v | [ -l ] "uql_statement\fR" count
ullaNotification is a simple command
line utility to print link layer information from ULLA on the screen. ullaNotification
should be used on all cases where the information needs to be retrieved
only when a particular condition is met. Notification conditions are evaluated
upon update of the respective attribute values within the LLA. This reduces
the evaluation overhead to a minimum.
The following parameters
are required to perform sampling of link layer data:
- -v
- display versioning
information about the ULLA Core and the ULLA Tools version.
- -l
- log screen
output to a file.
- uql_statement
- ULLA Query Language (UQL) statement: The
full UQL lexical and grammatical specification is available in uql(2)
.
However, for the ullaNotification tool there are only the following statements
valid:
select_statement this statement is used to display the attribute values
in the select_clause of the statement periodically.
Examples for valid UQL-statments can be found in ullaRequestNotification(2)
.
- count
- The count parameter determines the number of notifications fired
before the notification request is auto-cancled. If set to zero the notification
request can be canceled by pressing Crtl-C.
ullaReflection(1)
,
ullaAttribute(1)
, ullaCommand(1)
, ullaSample(1)
, ullaNotification(1)
, ullaTools(1)
ulla(2)
, uql(2)
, ullaRequestReflection(2)
, ullaRequestAttribute(2)
, ullaRequestCommand(2)
,
ullaRequestNotification(2)
, ullaRequestSample(2)
RWTH contribution
to the GOLLUM project (http://www.ist-gollum.org). Compliant with ULLA Tools
Version 0.3 (http://ulla.sourceforge.net).
This man page was written
by Marten Bandholz (mba@mobnets.rwth-aachen.de).
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