cisco NPE G1 router throughput

[cssam]

Hi Team,

How to calculate the NPE G1 router performance like total Mbps which current router is handling?

I got cisco 7206 NPE G1 router which has 3 Gig interface and running 600 Mbps traffic, surprisingly NPE G1 supports only 512 Mbps.

I calculated input and ouput bit rates of all interface which comes around 600 Mbps.

We believe it's wrong. Theoritically calculating sum of all packets/sec*1500*8 also giving wrong data.

[Joseph W. Doherty]

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Posting

The G1 actually represents 1 Mpps.  For minimum sized Ethernet packets, 1 Gbps requires 1.488 Mpps, 1 Mpps should allow about 672 Mbps.  Keep in mind, the forgoing is for traffic in just one direction.  Also, you need to allow some CPU for other services.  Larger packets require much less pps, for example, 1518 sized packets only require 81 Kpps.

[cssam]

Hi Joseph,

Thanks. 1 Gbps requires 1.488 Mpps. any calculaton can be given to understand better.

[Joseph W. Doherty]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

See Table 1's "Theoretical Maximum Kpps" in:

http://www.cisco.com/en/US/products/hw/modules/ps2643/products_white_paper09186a0080091db8.shtml

More detailed information can be found if you search the Internet.