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Cisco Bug: CSCvh74803 - C9400: Chassis SYSTEM_SERIAL_NUMBER not available for iPXE boot

Last Modified

Feb 20, 2019

Products (1)

  • Cisco Catalyst 9400 Series Switches

Known Affected Releases


Description (partial)

When device sends a DHCP packet, it creates and sends the client-id using MAC_ADDR, SYSTEM_SERIAL_NUM, MODEL_NUM and lastly with the string iPXE to DHCP server. 
But in case of C9400, the SYSTEM_SERIAL_NUMBER is empty. If the DHCP server is configured to use only the SYSTEM_SERIAL_NUM, it will be unable to identify the client.

Catalyst 9400: DHCP request from C9400 SUP (both SUP in case of redundant systems) while coming up and network booting over iPXE is configured.
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