1648 ExtremeWare Software 7.3.0 Command Reference Guide
PoS Commands
Usage Guidelines
The command allows a port to be configured to selectively maintain statistics for only those flows that
match the specified filters. Sixteen filters are supported for each port, eight filters for ingress flows and
another eight filters for egress flows. The
filter
# parameter and either the
ingress
or
egress
keyword are specified to identify the filter that is being configured. The
filter
# parameter is an integer
in the range [1..8]. The filters are comprised of a value/filtermask pair for each component of the
{destination IP address, source IP address, destination port number, source port number, protocol}
5-tuple. Conceptually, the filters work by ANDing the contents of each 5-tuple component of a
forwarded flow with the associated masks from filter#1. Statistics are maintained if the results of the
AND operations match the configured filter values for all fields of the 5-tuple. If there is no match, then
the operation is repeated for filter#2, and so on. If there is no match for any of the filters, then statistics
are not maintained for the flow. Filters for any/all of the 5-tuple components can be configured with a
single command.
The
filterspec
parameter also supports the
match-all-flows
and
match-no-flows
keywords. The
match-all-flows
keyword adjusts the settings such that the filter matches any flow (that is, the
value/filtermask pairs are set to 0/0 for all the 5-tuple components), while the
match-no-flows
keyword adjusts the settings such that the filter does not match any flow.
The optional
aggregation
keyword may be used to indicate that a single set of statistics is to be
maintained for all the flows that match the filter, which can substantially reduce the volume of exported
data. A particular export distribution group may also be specified on a filter-basis. The
group#
parameter identifies the set of collector devices that records for flows matching the filter are to be
exported to.
Example
The following command example configures a filter to collect statistics on ingress flows destined for
192.168.1.1
from the
192.169.0.0/16
subnet with a destination port of
80
using protocol
6
:
config flowstats filter 1 export 1 ports all ingress
dest-ip 192.168.1.1/FFFFFFFF source-ip 192.169.0.0/FFFF0000
dest-port 80/FFFF source-port 0/0 protocol 6/FF
History
This command was first available in an ExtremeWare IP Technology Services Release based on
v6.1.5b20.
Platform Availability
This command is available on the BlackDiamond switch only.
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