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Cisco Bug: CSCvv20094 - N7k About the L2 packet with Type: Unknown (0x0000)

Last Modified

Aug 24, 2020

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)

My customer captured L2 packets with "Type: Unknown (0x0000)" and finds that some packets can pass through N7K, and some packets will be dropped .

Packets whose data is 88F50000 will be discarded.
Packets whose data is 88f40000 will pass through.

eth.type == 0x0000
Data: 88f5000088f5000088f5000088f5000088f5000088f50000...
Data: 88f4000088f4000088f4000088f4000088f4000088f40000...

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