Passive Monitoring on Ethernet Interfaces Overview

The Monitoring Services I and Monitoring Services II PICs are designed to enable IP services. If you have a Monitoring Services PIC and a 4-port Fast Ethernet, 4-port Gigabit Ethernet PIC with SFPs, 10-port Gigabit Ethernet PIC with SFPs, or 1-port 10-Gigabit Ethernet PIC installed in an M40e, M160, MX Series, or T Series router, you can monitor IP version 4 (IPv4) traffic from another router.