Subtle point, Computer Networking

It is possible for a datagram to generate ICMP errors after it has been fragmented. For example, suppose that each of two fragments cannot be delivered. Seemingly, this would mean that one transmitted datagram would cause two ICMP errors to be sent back to the transmitter. However,the textbook on page 517 indicates that the ICMP error should be sent for only the ?rst fragment that causes the error. This is a convenient simpli?cation: it means that your transmiting APP need never listen for more than one ICMP error response.

RFC 791 de?nes IP and RFC 792 de?nes ICMP. Both date to September 1981. ICMP, although typically mentioned as a separate protocol-and sometimes not mentioned at all-is a required part of IP; i.e., an implementation of IP is non- conforming unless it includes ICMP. RFC 1122 (October 1989) updates and clari?es the earlier standards, based on experience gained in the 80s. RFC 1122 is quite long and detailed. Since RFC 1122, the only revisions to IPv4 have addressed type-of-service.

 

Posted Date: 3/15/2013 1:11:35 AM | Location : United States







Related Discussions:- Subtle point, Assignment Help, Ask Question on Subtle point, Get Answer, Expert's Help, Subtle point Discussions

Write discussion on Subtle point
Your posts are moderated
Related Questions
Bens Network  Ben's network is a non-blocking network.  It is a different  type of Clos network where initial and final stage consists of  2×2 switches (for n input  and m ou

REPEATERS:  Repeaters are needed when copper wire communication is takes place. According to the fact that electrical signal goes weaker while travelling over copper lines. A

You need to enable both arpa and snap encapsulation on single router interface. How do you do this? Ans)Assign two network numbers, one for every encapsulation type.

What is DHCP? DHCP is short for Dynamic Host Configuration Protocol. Its major task is to automatically assign an IP address to devices across the network. It first checks for

802.11 FHSS Frequency-hopping spread spectrum in a 2.4 GHz band Carrier sends on one frequency for short duration then hops to another frequency for same duration, hops agai

Consider the following network example. With the indicated link costs along each link in the figure, use Dijkstra's shortest-path algorithm to compute the shortest path from x to a

FCS= Frame Check Sequence CRC (Cyclic Redundancy Check) algorithm runs in switch that known as FCS (Frame Check Sequence)

Q. Explain Silly window syndrome? When either sending application sends data gradually or receiving application consumes data slowly - Illustration when 1 byte sent 40 bytes


Get the network design for a company