[c-nsp] Cisco 3640 Maximum performance
tbaranski at mail.com
Fri Oct 1 21:00:45 EDT 2004
> Actually, you should get a lot more than 70-90Mbit/s out
> of the platform.
> Let's assume a forwarding rate with 50.000 packets per
> seconds and packets of 1000 BYTES, That gives 50.000.000
> BYTES/Second = 50 MBYTE / Second = +- 500 Mbits / Second.
> The actual performance can be higher or lower, depending
> on software/hardware features used.
Cisco's PPS ratings are based on 64-byte packets, and PPS tends to
decrease as packet size increases. So you can forget about
Someone on this list ran TTCP through a 3640 a while back and got 80Mbps
(full-size packets). This pretty much represents the theoretical
maximum. Throughput will decrease as 1) average packet size decreases,
and 2) performance-reducing features are turned on (e.g., ACLs, NAT, and
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