Can total throughput (read throughput + write throughput) exceed the bandwidth of a network?

I was looking at the counters on a machine in production and found that the read throughput was 3.5 GBps and the write throughput was 4.5 GBps ( the counter measures the read bytes and write bytes per second for the network interface). The machine has one NIC with 41Gbps i.e. ~5 GBps. How is this possible ? My understanding is that network bandwidth is the total ( read + write) bits that can be transferred per second.

• "My understanding is that network bandwidth is the total ( read + write) bits that can be transferred per second." No, modern wired networks are full duplex. Each direction is independent of the other. Nov 3 '21 at 2:04
• When you say independent of the other you mean the total throughput (read + write) can be greater than the n/w bandwidth ? i.e. the sum of both "read bytes per second" and "write bytes per second" <= (2*bandwidth) Nov 3 '21 at 6:40
• Basically yes - a 40G Ethernet link can carry 40Gbit/s up and 40Gbit/s down at the same time.
– Zac67
Nov 3 '21 at 6:59