IPQOS(7IPP)IPQOS(7IPP)NAMEipqos - IP Quality of Service
DESCRIPTIONipqos is an implementation of the Differentiated Services model defined
in RFC2475: An Architecture for Differentiated Services, which defines
the following entities: multi-field classifier, meter, marker, and
dropper. The Solaris implementation of ipqos adds a flow accounting
entity.
These entities can be combined into processing paths that constitute a
series of actions that are performed on groups of flows. The classifier
groups together flows and directs them in a given processing path.
Classifier configuration and path construction are achieved using the
ipqosconf(1M) command.
A summary of the ipqos entities follows. For more information, refer to
the corresponding man page for each entity.
ipgpc
An implementation of the classifier defined in the
model. ipgpc has been extended and is able to
select traffic based on IP header parameters, user
id, project id, interface name, interface group
and direction.
tokenmt, tswtclmt
These modules implement different metering algo‐
rithms. tokenmt implements both RFC2697: A Single
Rate Three Color Marker and RFC 2698: A Two Rate
Three Color Marker. tswtclmt implements RFC2859: A
Time Sliding Window Three Color Marker. These mod‐
ules only implement the metering functions defined
in the RFCs.
dlcosmk
A marker entity that allows the setting of the
user priority field of Ethernet frames as defined
in the IEEE 802.1D specification. dlcosmk is only
available with VLAN capable network inter‐
faces.
dscpmk
A marker entity that enables the setting of the
Differentiated Services Code Point Value in the IP
header as defined in RFC 2474: Definition of the
Differentiated Services Field (DS Field) in the
IPv4 and IPv6 headers.
flowacct
An accounting module that utilizes the Solaris
extended accounting facility. flowacct logs all
flows with parameters used to build a charge back
mechanism.
STATISTICSipqos modules export statistics through the kstat facility. Exported
statistics contain the following common parameters:
module
module name
instance
dynamic parameter identifying a specific instance
name
a string for global statistics (for example, ipgpc global
stat) or a class name for per-class statistics for a clas‐
sifier action
To verify classifier configuration, generate traffic for each of the
configured classes and check that the statistic counters for the
expected class are increased. If you're unsure about the parameters for
your traffic, you can use snoop(1M) to determine them.
Some actions have the instance id of the next configured action in
their statistics. This instance id can be used to follow the action
processing path. Instance id's -1 and -2 are the built-in actions con‐
tinue and drop, respectively.
Examples:
To retrieve all statistics for ipgpc:
kstat -m ipgpc
To retrieve statistics for the class http:
kstat -m ipgpc -c http
SEE ALSOipqosconf(1M), dlcosmk(7ipp), dscpmk(7ipp), flowacct(7ipp),
ipgpc(7ipp), tokenmt(7ipp), tswtclmt(7ipp)
RFC 2475, An Architecture for Differentiated Services S. Blake, D.
Black, M. Carlson, E. Davies, Z. Wang, W. Weiss — The Internet Society,
1998
RFC 2474, Definition of the Differentiated Services Field (DS Field) in
the IPv4 and IPv6 Headers K. Nichols, S. Blake, F. Baker, D. Black —
The Internet Society, 1998
RFC 2697, A Single Rate Three Color Marker J. Heinanen, R. Guerin — The
Internet Society, 1999
RFC 2698, A Two Rate Three Color Marker J. Heinanen, R. Guerin — The
Internet Society, 1999
RFC 2859, A Time Sliding Window Three Colour Marker (TSWTCM) W. Fang,
N. Seddigh, B. Nandy — The Internet Society, 2000
Feb 25, 2002 IPQOS(7IPP)
