[c-nsp] identify reason for step like round trip time increasing

[Joe Shen]

Hi,

We have a Linux server measuring responding speed to
our Catalyst6509 switches. The server 'ping' 20 56Byte
packets to Catalyst6509 every 20 seconds.

In past month, the RTT data graph show a step like
increasing. That is, there is three steps on RTT
graph. I checked CPU load on Catalyst6509 and found
the CPU load is below 30%. 

As I configured "mls flow full"( but netflow
collection is disabled) , someone said this should be
the reason when traffic through that Catalyst6509
increase abruptly ( we migrate some traffic from other
path to path through this catalyst6509 this month).
But, "set mls flow destionation" does not show any
effect on RTT measurement.

Could anybody do some help ?

thanks.

Joe



 

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