WTF did I just read ?
quote from MT Bonding modes manual:
802.3ad
802.3ad mode is an IEEE standard also called LACP (Link Aggregation Control Protocol). It includes automatic configuration of the aggregates, so minimal configuration of the switch is needed. This standard also mandates that frames will be delivered in order and connections should not see mis-ordering of packets. The standard also mandates that all devices in the aggregate must operate at the same speed and duplex mode and works only with MII link monitoring.
Sorry, what I meant to say is that MT does not support LACP in hardware on their CRS products where it really needs to be implemented. Yes, they support it in software, but without a powerful enough CPU and multiple ports directly connected to the CPU, certain of their products are not good choices for this.
So, effectively, if you're looking to aggregate throughput to an endpoint using LACP, you'll have to waste two or more direct-to-CPU ports on one of their nicer routers instead of using a switch. Their CRS supports static link aggregation through the "Trunk" functions, but this is not LACP. Additionally, the CRS only has a 1 gbps pipe from the CPU to the entire switch chip, so you'll never see more than 1 gbps out of any bonded ports (using Bonding). If you use Trunking, you're stuck with the drawbacks of static link aggregation, which can cause lots of problems if one of the member links fails.
Since we're talking about an RB2011 here, you could bond the five 100mbps ports and achieve up to 500 mbps to an endpoint. You might even be able to bond one of the gigabit ports to the five 100mbps ports, resulting in a total aggregation of 1.5 Gbps, but bonding asymmetric links is a bad idea, assuming it even works. You could bond two of the gigabit ports, but you're not going to increase throughput, you're only going to add link redundancy because all five gigabit ports share a single 1 gbps link to the CPU...making the RB2011 the wrong platform if you need Bonding of gigabit links.