[c-nsp] SPAN destination on oversubscribed module

[Phil Mayers]

On 09/01/14 14:47, Ben Hammadi, Kayssar (NSN - TN/Tunis) wrote:
> Dears ,
>
> We have two 6509 interconnected via port-channel of two 10Ge port
> carrying about 3Gb. the module used is WS-X6716-10T and only the two
> mentioned port are used on this module for the moment . We are now
> adding a monitoring probe that will be connected on this module , the
> estimated monitored traffic is about 8Gb . Since this module has an
> oversubscription rate of 4:1 , i need to check :

You need to be really careful with this on a 6716. As you have hinted, 
you absolutely can blow away production traffic.

>
> *       On witch port it is recommended to connect the new probe
> without affecting the port channel

An unused port-group, or one with <2Gb/sec of TX traffic.

> *       can one port on this module reach 8Gb of monitored traffic

Yes, but only if the 4-port port-group has 8Gbit/sec of TX capacity.

> *       the monitored traffic will be added to the actual Swicth load
> or it is transparent ?

Not sure what this means.