UCS and VMWare-VNIC-VMNIC active-active/active-standby

Dear team,

We have 3 ESXi hosts each vSwitch1 and portgroup with the name TEST with 50 of VLAN
We have 3 Configuration of virtual machines with 19.168.0.X series and are assigned to the VLAN TEST

Each vSwitch1 is assigned with 2 vmnic on the same VLAN 50 (from UCS vNIC, service profile - where in 1 vnic comes from the fabric and other fabric B)

(1) inter-VM communication will work if we do an active Vmnic and other relief

Inter 2) VM communication may work some time or may not work if we do the two active vmnic

The above behavior is the same for virtual machines in combination with ESXihosts, expect if these virtual machines are on the same host ESxi interVm communication works very well...

What setting to do if we do get active vmnic and always inter-VM communication

NB:

As mentioned above these vNIC is created from the UCS Service profile, where, in 1 vnic comes from the fabric and other fabric B, and when we try the standby active mode the interVm communication works and even when we FI's down, the standy adapter automatically rises and traffic goes well

Thanks and greetings

Jose

Same condition still - the link between the FI and FI B does not serve for any traffic data. So if your source is the use of FI and your destination is on FI B, then the traffic has to go through the switch upstream. If you are still not sure, have active vmnic0 on a host computer and vmnic1 as active on the other host - communication will not take place (assuming that they go to different financial institutions)

The solution to your problem is to define VLAN 50 of upstream network. If you don't want to do that, then you must limit all traffic within the same IF (definitely not recommended).

Thank you

Shankar

Tags: Cisco DataCenter

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