> # Configuring SPAN max-queued-packets

> When a SPAN destination port is oversubscribed or has more source traffic than the speed of the destination port, the source ports of the SPAN session will reduce in their throughput. The impact is proportional to the amount of source traffic flowing in. Lowering the max-queued-packets value from the default value of 15 to 1 prevents the impact on the source ports. It is necessary to reconsider the default value for this setting as it may impact the source interface throughput.

> ## Restrictions

> - The span max-queued-packets can be changed only if no SPAN sessions are currently active on the switch.
> - If you are spanning the traffic going through an FCIP interface, SPAN copies may be dropped even if the SD interface has more bandwidth than the amount of traffic being replicated. To avoid SPAN drops, set the max-queued-packets to a higher value; for example, 100.

> By default, SPAN frames are dropped if the sum of the bandwidth of the source interfaces exceed the bandwidth of the destination port. With a higher value, the SPAN traffic has a higher probability of reaching the SPAN destination port instead of being dropped at the expense of data traffic throughput.

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