On 11/1/23 16:00, Jonathan OJ Owens wrote:
IP fragmentation is an Internet Protocol (IP) process that breaks packets into smaller pieces (fragments), so that the resulting pieces can pass through a link with a smaller maximum transmission unit (MTU) than the original packet size. The fragments are reassembled by the receiving host. "Source "https://en.wikipedia.org/wiki/IP_fragmentation"
With this can anyone clarify if routers who are unable to handle fragmentation drop these packets and thus the packets do not reach their destination?
What can be done to address these and allow the routers to transmit the packets without dropping them?
When using IPv4 the router should be able to fragment the packet, unless
it is marked as do not fragment. In that case it will signal back
towards the source that the MTU has been exceeded and the source needs
to resend with a smaller packet size. Ultimately there shouldn't be any
loss of information even if there are some packet drops as it will be
resent with a smaller mtu. Unless you control all of the path there
isn't anything you can do to totally eliminate packet drops.
This might be helpful
https://www.cloudflare.com/en-gb/learning/network-layer/what-is-mtu/
Mark.
