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Cflowd
7750 SR OS Router Configuration Guide Page 455
Specifying Cflowd Options on an IP Interface
When cflowd is enabled on an interface, all packets forwarded by the interface are subject to
analysis according to the global cflowd configuration and sorted according to the collector
configuration(s).
Refer to Table 21, Cflowd Configuration Dependencies, on page 454 for configuration
combinations.
To enable for filter traffic sampling, the following requirements must be met:
1. Cflowd must be enabled globally.
2. At least one cflowd collector must be configured and enabled.
3. On the IP interface being used, the
interface>cflowd acl option must be selected.
(See Interface Configurations on page 455.) For configuration information, refer to the IP
Router Configuration Overview sections of the 7750 SR OS Router Configuration Guide.
4. On the IP filter being used, the
entry>filter-sample option must be explicitly
enabled. The default is
no filter-sample. (See Filter Configurations on page 457.)
5. The filter must be applied to a service or a port. The service or port must be enabled and
operational.
Interface Configurations
CLI Syntax: config>router>if#
cflowd {acl|interface}
no cflowd
Depending on the option selected, either acl or interface, cflowd extracts traffic flow samples
from an IP filter or an interface for analysis. All packets forwarded by the interface are analyzed
according to the cflowd configuration.
The acl option must be selected in order to enable traffic sampling on an IP filter. Cflowd
(
filter-sample) must be enabled in at least one IP filter entry.
The interface option must be selected in order to enable traffic sampling on an interface. If
cflowd is not enabled (
no cflowd) then traffic sampling will not occur on the interface.