MTU is ridiculously difficult in telco networks. Because most transport is moving packets via Ethernet at the endpoints, you’ve got to make sure your customers

MTU is ridiculously difficult in telco networks. Because most transport is moving packets via Ethernet at the endpoints, you’ve got to make sure your customers can use whatever MTU they want, including 9000+. This means a lot of variation in frame size support, even within individual vendor product lines. Now, let’s see here…is a jumbo frame 9000, 9192, 9216, 9500, 10000, 16000 bytes in size? Who knows. That’s just Juniper. Extrapolate this uncertainty to dozens of different vendors and models of networking gear, AND how they each count bytes, interframe gaps, 802.1q and 802.1ad…