E810-CQDA2 not able to ping either port

[JerryJ]

I cannot ping from one NIC port on the E810-CQDA2 to the other, and I cannot ping either port from the switch console.

I have a dual port E810-CQDA2 installed in a Windows 11 workstation 23H2 (OS build 22631.5768).  Both NIC ports are connected to a Cisco C9500-32C using Cisco QSFP-100G-AOC3M-AO QSFP28 cables.  The two NIC ports are addresses 172.20.10.2 /20 and 172.20.15.2 /20.  The Cisco ports are Layer 2 switchports, and the Cisco webui is at address 172.20.10.1 /20. 

I can open the webui for the Cisco switch over the 100G cable.

I can successfully ping the webui port from the Windows 11 host computer using 'ping -S 172.20.10.2 172.20.10.1' and same with 'ping -S 172.20.15.2 172.20.10.1'. 

I cannot ping either 172.20.10.2 or 15.2  from the Cisco console CLI, and I cannot ping from one NIC port to the other with 'ping -S 172.20.10.2 172.20.15.2.

I have reloaded the NVM with E810_NVMUpdatePackage_v4_80_Windows running the cmdline nvmupdatew642.exe and selected that NIC device, which showed an update was available from this package (the 1G NIC in the Windows 11 host is also an Intel product, but did not need updating).

I have run the cmdlet Test-IntelEthernetHardware on the NIC and it does not show any problems, all 4 tests pass (Register, EEPROM, MAC Loopback, Interrupt) on both NIC ports.

The get-IntelEthernetSetting result is in the attached file.

The Windows 11 Firewall has all ICMPv4 and ICMPv6 enabled, both incoming and outgoing.  I can ping the Windows 11 1G port over our facility LAN. 

Is this an expected behavior in Windows 11 workstation, that the port cannot respond to a ping, or is there some other explanation, or other diagnostic or configuration setting I can try?

[JerryJ]

yes