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Fragmented Packets and packet size
While trying to fault find an issue with the waterfall and spectrum not displaying on a remote smartlink connection.....
I observed while monitoring the local network traffic on my LAN that the Flex was sending ipv4 packets of 1514 bytes. As my PC has an MTU of 1500 bytes fragmentation and reassembly has to occur.
My router also has a fixed MTU of 1500 bytes on the outbound interface so all packets sent over the internet are being fragmented.
When trying to connect remotely, wireshark shows reassembly errors. "netstat-s" shows a huge number of packets requiring reassembly and zero successfully reassembled.
I understand from conversation with a core network engineer at an ISP that any packet size greater than 1500 bytes is not best practice and can result in issues.
Is this normal to have an MTU on the flex packets greater than 1500 and can it be reduced.
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