Can the S3700 transparently transmit PAUSE frames

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PAUSE frames are sent and terminated at the MAC address layer of the forwarding chip. PAUSE Frames are used to control service traffic when the forwarding chip is congested. PAUSE frames cannot be forwarded.

Other related questions:
Can the S2700/3700 transparently transmit Pause frames
The S2700/3700 cannot transparently transmit Pause frames. Pause frames are IEEE 802.3-compliant Ethernet frames and are a type of MAC control frames. They are initiated and terminated at the MAC address layer.

Do the S2700&S3700&S5700&S6700 switches transparently transmit BPDUs by default
By default, the S2700&S3700&S5700&S6700 switches do not transparently transmit Bridge Protocol Data Unit (BPDUs).

Can BPDUs be transparently transmitted on a device
After the bpdu enable command is used on an interface, the interface sends received BPDUs to the CPU for processing. The local device determines whether to process BPDUs of a protocol depending on whether the protocol is enabled. For example, whether STP BPDUSs on an interface are sent to the CPU depends on whether STP has been enabled on the interface using the stp enable command. After the bpdu disable command is used on an interface, BPDUs received on this interface are discarded by the chip. To transparently transmit BPDUs on a device, enable Layer 2 protocol transparent transmission on the device interfaces. In V100R005 and later versions, run the l2protocol-tunnel all enable command on an interface to enable Layer 2 protocol transparent transmission. To ensure successful forwarding of packets, configure the default VLAN on the inbound and outbound interfaces of all devices on the forwarding path.

Can a bridge transparently transmit packets carrying VLAN tags
A bridge on an AR router supports the transparently transmission of VLAN packets. However, a VLANIF interface does not support the transparently transmission of VLAN packets. It is not recommended that the transparent transmission of VLAN packets should be performed on sub-interfaces.

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