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I believe the 6848 is,more or less, identical with a 6748 with a DFC4 installed. If so, I would expect them to be often treated alike concerning usage recommendations.
I'm guessing the recommendation might be because both cards only have 40 Gbps to the fabric, but 48 gig ports, i.e. they're oversubscribed. If so, you should also be able to avoid any need for ingress queueing by using less ports.
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...