Consider two routers which have 3 GEs between them (no L2
device between them).  

Is it "better" to configure each of these GEs as
a standalone L3 connection or to combine them GEs into
an etherchannel (802.1ae?) bundle?

My $0.02 would be to keep them at L3 and not run another
protocol underneath to enable bundling.  The question I've
heard with this approach is how granular the load splitting
works when splitting load across three interfaces.  If CEF
does per packet load splitting, would the load be (nearly)
equal across the three interfaces (eg within 1-2% at all times)?
When using per packet CEF, is there an issue with packets being received out
of order?  (Consider some flow where a large packet
is sent over one interface and the following flow packet is small
and sent over another interface.  The small packet might be
received completely before the large packet.  Does per packet
CEF address this issue?)

I had heard that etherchannel (or the IEEE derivative) would
support nearly equal load splitting across N interfaces.
And it also defines a mechanism so that the receiving router
would be able to detect and re-order packets which arrive out of
order).

Comments?  Pointers to relevant docs?

THanks


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