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Note that the interface name order is not the same on both nodes.
Are the interfaces mapped correctly according to the phisical position and their names/aliases ?
I mean:
does phisical interface X really corresponds to ethX ?
does phisical interface Y really corresponds to ethY ?
Check cabling, unplug each by each one at a time and confirm that the one that goes down is really the desired one .
What about arp table ? are they the same on the switch side ?
Can you see correct / expected traffic on tcpdump and/or fw monitor ?
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