About This Guide

This guide provides information about traffic sampling, which allows you to sample IP traffic based on particular input interfaces and various fields in the packet header. You can also use traffic sampling to monitor interfaces, protocols, and addresses.

The guide also offers information about per-flow load balancing, port mirroring, and domain name system (DNS) or Trivial File Transfer Protocol (TFTP) forwarding.

Traffic sampling and forwarding are supported only on routers equipped with an Internet Processor II application-specific integrated circuit (ASIC). To determine whether a routing platform has an Internet Processor II ASIC, use the show chassis hardware command.