Do S series switches support N:1 or 1:N mirroring

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S series switches all support N:1 mirroring, in which packets are copied from N mirrored ports to one observing port, and there is no limit on the number specified by N.
1:N mirroring copies packets on one mirrored port to N observing ports. M:N mirroring copies packets on M mirrored ports to N observing ports.
In M:N mirroring, the number of mirrored ports is not limited, and the number of observing ports is the same as that in 1:N mirroring. The observing ports supported by S series switches are different. For details, see:
- S1720&S2700&S5700&S6720 series switches 1:N Mirroring Specifications
- S7700&S9700 series switches 1:N Mirroring Specifications
- S12700 series switches 1:N Mirroring Specifications
- S9300&S9300E&S9300X series switches 1:N Mirroring Specifications

Other related questions:
Do S series switches support broadcasting of mirrored packets in a VLAN
Whether mirrored packets are broadcast in a VLAN depends on whether the MAC address table of this VLAN contains entries matching the MAC addresses of the mirrored packets. If the MAC address table of a VLAN contains entries matching the MAC addresses of the mirrored packets, the mirrored packets are forwarded based on the MAC address table at Layer 2. Otherwise, the mirrored packets are processed in the same manner as Layer 2 unknown traffic, that is, they are broadcast in the VLAN. If the MAC address table of a VLAN contains entries matching the MAC addresses of the mirrored packets, and the mirrored packets need to be broadcast in the VLAN, run the mac-address learning disable command in the view of this VLAN to disable MAC address learning (This function applies to all S series switches except S1700 switches.)

Do optical ports on S series switches support port mirroring
For S series switches, the mirroring function is related to switch models, and not related to port types. For example, the S5700EI supports port mirroring, and port mirroring can be configured on electrical and optical ports of the S5700EI.

Do S series modular switches support inter-card mirroring
S series switches support inter-card mirroring. That is, a mirrored port and an observing port can reside on different cards.

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