Mirror 1G interface to 10G interface

[Larbi Driouich]

We have a cisco switch WS-C4507R+E ,IOS-XE 03.08.04.E
We need to mirror the trafic in and out of four 1G interfaces (4x1Ge) to one 10G interface.
is it possible ? is there any limitation ?
The four Gi interfaces and Te interface belong to different slots.

[Torbjørn]

You can achieve this with a SPAN. This will replicate traffic from source interfaces to a destination interface. A minimal span configuration for this will look something like this:

monitor session 1 source interface {interface} both
monitor session 1 source interface {interface} both
monitor session 1 source interface {interface} both
monitor session 1 source interface {interface} both
monitor session 1 destination interface {interface}

You can also elect to get only ingress or egress traffic and filter the traffic to be mirrored if you wish to do so. SPAN traffic is hardware switched and shouldn't cause any issues in terms of cpu/memory utilization. Frame replication does count towards total throughput for the device though.

See the relevant configuration guide for SPAN: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/20ew/configuration/guide/config/span.html