[AusNOG] VM throughput to network - Email found in subject

[James Troy (PageUp/AU/VIC)]

My understanding of this is the host OS (in this case VMWare) is bonded to certain 'ports', these ports are logical and can be mapped 1:1 to physical ports or to a bonded/teamed NIC. Given that most host/guest OS share a 10GB connection, the slow point will be this logical connection at the host.

Hmm re-reading perhaps not 100% clear.
Bond 2x 1gb ports = 2gb, the 2gb bonded port is mapped in Vmware to a guest OS, the guest OS should have 2GB network connectivity.

However once again, no technical fact here, just my knowledge speaking.

James Troy

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From: ausnog-bounces at lists.ausnog.net [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Skeeve Stevens
Sent: Thursday, 18 November 2010 10:19 AM
To: ausnog
Subject: [AusNOG] VM throughput to network - Email found in subject

Hey all,

Got an interesting debate with some server guys.

It is my 'theory' (not backed up my technical facts) that a VM should be able to use more than 1Gig of throughput when a VM (VMware) is on a server that has a bonded NIC to a switch which 'in Cisco talk' is doing a ether-channel/port channel to the server - the case in point is 2 cables together, but in theory should be able to go to 4 or more.

The server guys are suggesting that a single VM can only go out one of the NIC ports and therefore only get to a maximum of 1Gb throughput.

Is this true and is there any docs for either HP DL 380's, VMware which would support either stance?

Just trying to verify a theory, and since there would be a ton of people on this list which do VMware, NIC bonding into switching, I thought it would be a great place to ask.


...Skeeve

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