What factors influence the speed reduction caused by your router?
What factors influence the speed reduction caused by your router?
It is often phrased differently, but the idea remains similar. Enabling QOS leads to the Nat boost being turned off, which seems contradictory since disabling QoS should trigger it. The issue lies not in double NAT, but in the CPU recalculating checksums within the IP header, consuming several cycles. It’s unclear how this is efficiently handled in ASIC designs, as complex math isn’t desirable. Cisco has long claimed NAT couldn’t be performed on a switch or required routing through a router blade, but someone discovered this workaround.