Cisco WS-F4531= Catalyst 4500 NetFlow Services Card Expansion Module

The Cisco Catalyst 4500 NetFlow Services Card is an essential expansion module that enhances the Catalyst 4500 series by adding robust NetFlow accounting capabilities. This card allows for comprehensive traffic analysis by collecting statistics on a per-flow basis, which includes defining flows based on attributes like source and destination IP addresses, protocol types, and Layer 4 ports.

Without this module, the Supervisor Engine IV on the Catalyst 4500 lacks support for NetFlow accounting, limiting data flow analysis. This configurable option is designed for use in redundant supervisor configurations, provided that both supervisors are equipped with a NetFlow Services Card.