Hi @simsim ,
To make it simple, smaller packet size means the whole chunk of data into smaller packets, and need to add l2/l3 headers for each.
for transferring 900Mb of actual data we need to transfer 100 Mb of headers. considering the link speed, 1 Gbps, per second only 900Mb is transfered ( less throughput)
If the packet size is high, we need only less number of l2/l3 headers, may be 980 Mb data need 20Mb header, which gives higher actual throughput.
You can check MTU of patch using ICMP packet with df bit set.
Usually voice packets will be smaller.
Hi @simsim ,
I was just giving an analogy ( please dont consider Byte or bit difference or interframe gap).
i was just conveying that if your actual data is packed to smaller packet size, you need to have overhead for all, all togather matching to link speed. so actual data transferred will be lower. But if you have bigger packet size, the number of packet will be less, you need header for all (header size will be the same regardless of data size). so you can transfer more data at a given time.
Usually packet per second will be almost same for one platform for any packet size, which gives more data transfer for bigger packets.
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