Cisco IPS Concurrent session support in ips 4260 and 4270 sensor

[noumanqazi]

I am wondring that no document from Cisco IPS data sheets mention the concurrent session support in Cisco IPS 4200 series sensor. I am looking forward to any one who can advise about the subject.

Thanks

Nouman

[fadlouni]

Hi.

with IPS devices it's difficult to measure performance by # of connections per second since several factors count to the performance limit, including:

1- packet size.

2- object sizes per transaction

3- transactions per second

4- signatures enabled

5- features enabled

that why public documents try to make it more realistic by mentioning the transactional performance.

here is a link mentioning concurrent connections for 4270:

http://www.cisco.com/en/US/prod/collateral/vpndevc/ps5729/ps5713/ps4077/prod_white_paper0900aecd806e7283.html

although the link mentiones 100k and 200k, but we've seen situations where we had a lot more connections with a smaller amount of signatures enabled.

for the 4260 the public document only mentions the transactional performance.

Regards,

Fadi.

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