NIC Teaming not working with Cisco Etherchannel

[scott2929]

Simple setup: NIC Teaming on vSwitch0 connected to a Etherchannel on the Cisco side.

Etherchannel spans two Cisco devices.  

All vSwitch0 failover looks like this:

All works good on the esxi hosts using Mellanox adapters.

However, NIC teaming not working on hosts using Broadcom 57414 adapters (at least that's the only difference that we can see)

ICMP Echo requests come in on vmnic0 and are not answered:

Not sure why esxi doesn't send the ICMP Echo Reply.

4 hosts with Mellanox adapters work fine.

2 hosts with Broadcom 57414 adapters: no ICMP Echo Reply.

Not sure how to proceed - looking for some ideas.  I realize this is more likely a VMware issue, but given that the Cisco is doing the ICMP - figured that it couldn't hurt to ask in here.

[RAdamWilliams]

Are the two physical Cisco devices the host is connected to a stack? I feel like I've seen you can't do an etherchannel across two different logical devices.

[scott2929]

The two Cisco devices are stacked.  That stack has four etherchannels - each of which is connected to its own host.

All four of those connections work fine.  Each etherchannel has an ip address and talking IP to its connected esxi mgmt port works fine.

Problem is the two most recently-added hosts all set up and configured in the exact same way - the Cisco etherchannel cannot talk IP to the connected esxi mgmt port.  The only difference with these two new connections are that Broadcom NICs are being used on the HP servers whereas on the four connections that work: Mellanox NICs are being used.

Perhaps a starting point might be logs somewhere within esxi (/var/run/log/* etc.) which might indicate why the incoming ICMP Requests are not answered ??

[MHM Cisco World]

Try check

Show etherchannel summary 

Check link to host is it P or one P and other S

MHM