Cisco IPS-4255-K9 Installation Guide - Page 55

2 C H A P T E R Installing the IPS 4240 and the IPS 4255 Note All IPS platforms allow ten concurrent CLI sessions. This chapter describes the IPS 4240 and the IPS 4255 and how to install them. It also describes the accessories and how to install them. This chapter contains the following sections: • Introducing the IPS 4240 and the IPS 4255, page 2-1 • Front and Back Panel Features, page 2-2 • Specifications, page 2-4 • Connecting the IPS 4240 to a Cisco 7200 Series Router, page 2-5 • Accessories, page 2-5 • Important Safety Instructions, page 2-5 • Rack Mounting, page 2-6 • Installing the IPS 4240 and the IPS 4255, page 2-7 • Installing the IPS 4240-DC, page 2-10 Introducing the IPS 4240 and the IPS 4255 The IPS 4240 and the IPS 4255 deliver high port density in a small form factor. They use a compact flash device for storage rather than the hard-disk drives used in other sensor models. The IPS 4240 and the IPS 4255 do not support redundant power supplies. The IPS 4240 replaces the IDS-4235. There are four 10/100/1000 copper sensing interfaces. The IPS 4240 is available with either AC or DC power. It monitors up to 250 Mbps of aggregate network traffic on multiple sensing interfaces and is inline ready. The 250-Mbps performance for the IPS 4240 is based on the following conditions: • 2500 new TCP connections per second • 2500 HTTP transactions per second • Average packet size of 445 bytes • Running Cisco IPS 5.1 or later Note The 250-Mbps performance is traffic combined from all four sensing interfaces. OL-18504-01 Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.0 2-1