Whether observing-port of S-series switch can distinguish the mirrored traffic of different VLANs

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For S-series switches, because the mirrored traffic is copied directly from the original traffic, the traffic mirroring to the observing port is related to whether the port carry the VLAN tag and the direction of mirrored port.
- Inbound of mirroring traffic: For the Access port type, because the original traffic do not carry VLAN tag, the mirrored traffic to the observing port do not have VLAN tag; For Trunk type port, because the original traffic carry VLAN tag, the mirrored traffic to the observing port has a VLAN tag too; The hybrid port has both of the above two cases.
- Outbound of mirroring traffic: For some switches, the mirroring action occurs before adding / stripping VLAN tags, because the original traffic from the device before the general release with a VLAN tag, the mirror to the observation port has a VLAN tag too; For another Part of the switch, the mirror action occurs after adding / stripping VLAN tags, so whether mirroring to the observing port carry VLAN tag is same as inbound of mirroring traffic style.

Other related questions:
Whether the observing port and the mirroring port of the S-series switch need to be added to the same VLAN
For S-series switches, mirroring ports and observing ports do not need to be added to the same VLAN when configuring port mirroring. You can run command observe-port to forward mirrored traffic to the local or remote, do not need to add observe the port the VLAN.

Differences between mirrored ports and observing ports on S series switches
For S series switches: - A mirrored port is a monitored port. All the packets that pass through a mirrored port are copied to a port connected to a monitoring device. - An observing port is connected to a monitoring device and used to send packets from a mirrored port to the monitoring device.

Do I need to add observing ports and mirrored ports on S series switches to the same VLAN when configuring mirroring
For S series switches, you do not need to add observing ports and mirrored ports to the same VLAN when configuring port mirroring. In addition, the observe-port command has been executed to enable forwarding of mirrored packets to local or remote observing ports. Therefore, you do not need to add the observing ports to a VLAN.

Can a physical port on an S series switch be configured as a mirrored port and an observing port simultaneously
For S series switches (except S1700 switches), a port on the following switch models or cards cannot be configured as an observing port and a mirrored port simultaneously: - Modular switches: X series cards - Fixed switches: S5720HI Note: A port on the following switches cannot be configured as an observing port and a mirrored port simultaneously: S1720GFR, S1720GW-E, S1720GWR-E, S2720EI, S2750EI, S5700LI, S5700S-LI, S5710-C-LI, S5710-X-LI, S5700SI, S5720LI, S5720S-LI, S5720SI, S5720S-SI, and S600-E.

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