Why the first packet is discarded after the Mac-Limit is configured for the S2700 port

After the Mac-Limit is configured for the S2700 port, the first packet learned by each MAC address is sent to the CPU for software learning. If the Mac-Limit is not configured, the hardware directly forwards the first packet, and this problem does not occur.

When the first packet is sent for software learning, the hardware also forwards the first packet for the S3700 or S5700 switch but not for the S2700 switch due to limitations of the S2700 switch.

After the Mac-Limit is configured, the first packet is discarded. However, after the MAC address is learned, the first packet is not discarded.

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