virtualbox.org

I have bridged 4 Intel Pro 1000 T Server NICs inside my XP Pro guest. Assigned a static IP for the bridge and did some experimenting. Webpages seem to load faster than with a simple, single NIC. Mostly when opening several tabs inside the browser at once.

As written on these sites about nic-teaming and link-aggregation
http://blogs.technet.com/b/chengw/archi ... d-vmm.aspx
http://en.wikipedia.org/wiki/Link_aggre ... face_cards
nic-teaming and link-aggregation are the same, but after reading both sound like nic-bridging. Could it be that all three are just other words for the same thing? It seems so.

Nic-teaming and link-aggregation are used for load balancing and failover but bridging can be used for this as well, is that right? At least the picture on the first page certainly looks like a bridge between 2 nics.

Wikipedia says that 'Microsoft Windows does not natively support link aggregation (at least up to Windows Server 2008)'. Nevertheless browsing seems faster. Is there a reliable way to benchmark the single nic and the 4-nic-bridge for comparison?

'This aggregation combines the individual capacity of multiple interface cards to form a high performance virtual link'
All this leads me to think a speedup can be had if the 4 nics of virtualbox are bridged inside of the guest.

I am not sure what you expected to happen by bridging NICs within a vm. What network(s) are they connected to? If they are all bridged to the same physical NIC in the host I would not expect to see any improvement.

The rest of your post doesn't seem to have much relevance to VirtualBox. Perhaps you would consider posting it in a Windows networking forum.