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LACP using 2 hosts

sucanushie

Hi There,

Is it possible to create a LAG group, and assign 1 NIC from each host in the LAG group?

esx 6.0 with VDS.

I'm having issues when I try this, one link is being suspended on the physical switch.

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Comments

jibbajabba

I am not a CCNO such as yourself, but don't you create a LAG group with two NICs per host ? If you use etherchannels you need to set the teaming policy on vSphere to IP Hash.

jibbajabba

Actually, doesn't 6.x now support LACP as teaming modus ?!?

sucanushie

2 NICS on the same host to one physical switch works no problem.

I was curious if I can take 1 NIC from 2 host to create a LAG group.

DPG

sucanushie wrote: »

I was curious if I can take 1 NIC from 2 host to create a LAG group.

No. Consider each host as a separate network device.

kj0

sucanushie wrote: »

I was curious if I can take 1 NIC from 2 host to create a LAG group.

The reason why this won't work if because the workloads are on that one host. A vDS will look like a single switch across all the hosts assigned but each VM still resides on that host and will use the computing resources (NIC included) on that host and won't share across.

The benefit of a vDS is that you only need to create one Port group (per network requirement) instead of repeating that port group on each hosts vSwitch. You also get the benefits of Load Balancing based on Physical NIC, Multicasting, Ingress\Egress traffic shaping, and much more.

Another way to think about it is that if you have a VM on host 1 and you want the packets to route through host 2's pNIC, then the packets need to get to host 2 first somehow.

Hope this helps.

@Jibbs: When you have vDS, surely your better off using "Route based on Physical NICs" instead of "Based on IP Hash": If your using using a standard vSwitch, then use etherchannel (cisco) and "IP Hash" with no standby NICs.

jibbajabba

*you're

Anyway, depends on your setup and physical switch configuration.

kj0

jibbajabba wrote: »

*you're

Ha. That's a rare occasion for that to happen

deth1k

maybe if you are running Nutanix in cluster configuration you could?

sucanushie

Matter of fact we are running Nutanix.