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CHR, LACP, and VMware

Tue Jan 08, 2019 9:05 pm

I have a vmware setup where we are trying to bond multiple 10 Gig SFP+ with a Cisco Nexus. The Cisco says the port members are Individual (I). The Mikrotik bond is set on 802.3ad and this setup works on CCRs. Should I do the bonding in VMWare? I have not done this before. Thoughts?
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Re: CHR, LACP, and VMware

Fri Jan 18, 2019 1:56 pm

You cannot bond at the CHR level.
Right now you are bonding two virtual NICs that connect to a Virtual Switch. Not Nexus.

You should do the bonding at the ESXi level.

But from there I don't know how you could get more that 10Gbps on the CHR.
I've read some posts that the VMXNET3 driver doesn't really limit the bandwidth at 10Gbps. I don't know how CHR will handle it.
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Re: CHR, LACP, and VMware

Fri Jan 18, 2019 4:16 pm

If your license allows, do the bonding in ESX.
If not, you'll need to dedicate NICs to your CHR instance and then follow these steps:

Create a vSwitch per NIC, allow promiscuous mode for vSwitch.
Add each dedicated NIC to the corresponding vSwitch as single uplink only.
Create port groups on that vSwitch (ideally as trunk ports - vlan 4095 in ESX)., enable promiscuous mode, mac changes and forged transmits.
Connect these vSwitches to your CHR instance.
Now you can bond from your CHR to the nexus.

Christopher Diedrich
Basel, Switzerland
Bremen, Germany

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