- config>router>interface# cflowd-parameters sampling {unicast | multicast} type {acl | interface} [sample-profile profile]When enabled on a service interface, cflowd collects routed traffic flow samples through a router for analysis. Cflowd is supported on IES and VPRN services interfaces only. Layer 2 traffic is excluded. All packets forwarded by the interface are analyzed according to the cflowd configuration. On the interface level, cflowd can be associated with a filter (ACL) or an IP interface. Layer 2 cflowd ingress sampling is supported on VPLS and Epipe SAPs.