You can do your queueing on the E3 interfaces, but the big question is the reason why you will want to do that. On slower links, the different queueing systems are used to optimise performance, but on a link like E3, often performance is not an issue. Also, because links like 34mbit are found in providers core, they will generally use fifo because this has the minimum resource requirement (in terms of cpu and memory).
I don't think terminating an E3 hamper your chances of implementing queing. I feel you need to configure cef anyway and no ip route-cache in your exit interfaces and then apply the needed queing commands applying the reqired logic for your need.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...