Packet Fragmentation & Reassembly - IP Network Layer | Computer Networks Ep. 4.3.2 | Kurose & Ross

Answering the question: "How does IP packet fragmentation and reassembly work?" Discusses IP header fields related to fragmentation and reassembly, and performance implications.
Based on Computer Networking: A Top-Down Approach 8th edition, Chapter 4, Section 3.1.

[ranaellese]

I attend a lec, watched vids i didn't get what the offset refers to but you've made it really clear >>thank you !!

[James_Knott]

These days Path MTU Discovery (PMTUD) is often used instead of fragmentation. In fact, it's mandatory on IPv6 and frequently used with IPv4. With PMTUD, an ICMP too big message is sent back to the source, when a router can't pass a packet that's too large.

[cliffmathew]

Thank you. Once an IP datagram is fragmented, none of the intervening devices will attempt to reassemble it and continues as the fragments until it reaches the destination device - correct?

[DerCheckerzeigts]

Ain't there an error at 3:19 ? Should the last fragment length be 1060, because it has 1040byte of data field + 20 bytes of the ip header?

[petchie]

What if reassembly table is full and how long fragments in table that some fragment not or never arive. Sry for my grammar

[equaliser]

this dude is reading script, not really teaching. Had to watch Jim Kurose to understand more