3 ms·
this is not true at all. All modern routers use a combination of ASICs and CPUs. some of the data plane even runs through the CPU, depending on the protocol. al
by shaklee3 4y ago
this is not true at all. All modern routers use a combination of ASICs and CPUs. some of the data plane even runs through the CPU, depending on the protocol. also, TCP segmentation offload does not mean that the entire TCP protocol is offloaded onto the NIC. only a small part of it is and the rest of it still goes through CPU.
- richardwhiuk 4y agoWith TSO and GRO, the CPU deals with jumbo frames and the NIC handles splitting and combining them. You are correct that intermediate boxes all take a perf hit for the extra packets, because routers and other boxes are usually packets per second bound at some point, rather than bandwidth.