схема базы данных Open_vSwitch (Open_vSwitch database schema)
NetFlow TABLE
A NetFlow target. NetFlow is a protocol that exports a number of
details about terminating IP flows, such as the principals
involved and duration.
Summary:
targets set of 1 or more strings
engine_id optional integer, in range 0 to 255
engine_type optional integer, in range 0 to 255
active_timeout integer, at least -1
add_id_to_interface boolean
Common Columns:
external_ids map of string-string pairs
Details:
targets: set of 1 or more strings
NetFlow targets in the form ip:port. The ip must be
specified numerically, not as a DNS name.
engine_id: optional integer, in range 0 to 255
Engine ID to use in NetFlow messages. Defaults to datapath
index if not specified.
engine_type: optional integer, in range 0 to 255
Engine type to use in NetFlow messages. Defaults to
datapath index if not specified.
active_timeout: integer, at least -1
The interval at which NetFlow records are sent for flows
that are still active, in seconds. A value of 0 requests
the default timeout (currently 600 seconds); a value of -1
disables active timeouts.
The NetFlow passive timeout, for flows that become
inactive, is not configurable. It will vary depending on
the Open vSwitch version, the forms and contents of the
OpenFlow flow tables, CPU and memory usage, and network
activity. A typical passive timeout is about a second.
add_id_to_interface: boolean
If this column's value is false, the ingress and egress
interface fields of NetFlow flow records are derived from
OpenFlow port numbers. When it is true, the 7 most
significant bits of these fields will be replaced by the
least significant 7 bits of the engine id. This is useful
because many NetFlow collectors do not expect multiple
switches to be sending messages from the same host, so
they do not store the engine information which could be
used to disambiguate the traffic.
When this option is enabled, a maximum of 508 ports are
supported.
Common Columns:
The overall purpose of these columns is described under Common
Columns at the beginning of this document.
external_ids: map of string-string pairs
