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framer-policy (none | best-fit | exact-size | dynamic-size; default: none) - the method how to combine frames (like fast-frames setting in interface configuration). A number of frames may be combined into a bigger one to reduce the amount of protocol overhead (and thus increase speed). The card is not waiting for frames, but in case a number of packets are queued for transmitting, they can be combined. There are several methods of framing:
none - do nothing special, do not combine packets
best-fit - put as much packets as possible in one frame, until the framer-limit limit is met, but do not fragment packets
exact-size - put as much packets as possible in one frame, until the framer-limit limit is met, even if fragmentation will be needed (best performance)
dynamic-size - choose the best frame size dynamically