FLOWACCT(4IPP) IP Quality of Service Modules FLOWACCT(4IPP)
NAME
flowacct - Flow Accouting module
DESCRIPTION
The flow accounting module
flowacct enables you to record flow
details. You use flow details to gather statistics and/or for
billing purposes. Accounting consists of recording flow details in a
location you designate and in a format that you can retrieve at a
later stage. IPQoS accounting relies on the exacct mechanism to store
and retrieve flow information.
A flow is defined by the 5-tuple - saddr, sport, daddr, dport and
protocol.
Typically, the accounting module is the last datapath element in a
sequence of actions. Flow attributes include ToS/DS, user id, project
id, creation time (time the flow was created), last seen (when pkts
for the flow were last seen), action name (instance that recorded the
flow information), nbytes and npackets. Attributes are split into
groups entitled
basic and
extended. The basic group records only the
nbytes, npackets and action name, while the extended group is a
superset of the basic group and records all attributes. The
attributes to be recorded, in addition to the accounting file that
contains flow details, are selected using
acctadm(8). The
flowacct module does not provide a mechanism to retrieve flow information from
the accounting file nor to interpret the retrieved information.
STATISTICS
The flowacct module exports the following statistics available
through kstat:
module: flowacct instance: <action id>
name: Flowacct statistics class <action name>
bytes_in_tbl <bytes in the flow table>
epackets <packets in error>
flows_in_tbl <flow records in the flow table>
nbytes <number of bytes through this instance>
npackets <number of packets>
usedmem <memory, in bytes, used by the flow table>
FILES
/kernel/ipp/sparcv9/flowacct 64-bit module (SPARC only.)
SEE ALSO
ipqosconf(8),
acctadm(8),
libexacct3LIB,
dlcosmk(4IPP),
dscpmk(4IPP),
ipgpc(4IPP),
ipqos(4IPP),
tokenmt(4IPP),
tswtclmt(4IPP) September 29, 2004 FLOWACCT(4IPP)
