Throughput on Cisco Routers That Support Cisco Ios Ips

Cisco Platform Tested

Maximum Throughput

Cisco 1841 Integrated Services Router

60 Mbps

Cisco 2801 Integrated Services Router

65 Mbps

Cisco 2811 Integrated Services Router

70 Mbps

Cisco 2821 Integrated Services Router

200 Mbps

Cisco 2851 Integrated Services Router

250 Mbps

Cisco 3825 Integrated Services Router

325 Mbps

Cisco 3845 Integrated Services Router

425 Mbps

The table in the figure lists the maximum throughput obtained for various router platforms with Cisco IOS IPS enabled. Maximum throughput numbers change often. The numbers presented in the table provide a good comparison of the relative performances of the various Cisco routers. Check Cisco.com for the latest maximum throughput numbers. Use these numbers to help you determine what the performance impact might be when implementing Cisco IOS IPS on your network. These numbers are derived from tests performed in isolated or ideal conditions. Your results may vary depending on your network architecture, traffic patterns, and the services running on the router.

Note To determine what the expected performance of Cisco IOS IPS could be Cisco used the

Spirent Communications Avalanche (Avalanche) and Spirent Communications Reflector (Reflector) test system. Avalanche was programmed to rapidly establish multiple HTTP sessions to Reflector, with the router running Cisco IOS IPS between them.

Avalanche opens the TCP session to Reflector and requests a single 64-KB file from Reflector. Reflector sends the file, and then Avalanche receives the file and closes the TCP and HTTP session. Avalanche is programmed to increase the number of such transfers, increasing the total throughput load offered to the router. The load is increased until sessions start failing because of the performance limitations of the router.

5-66 Securing Cisco Network Devices (SND) v2.0 © 2006 Cisco Systems, Inc.

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