1 / 7

Internet Control Message Protocol (ICMP)

Internet Control Message Protocol (ICMP). ICMP. Internet Control Message Protocol IP is the delivery standard at the TCP/IP internet layer ICMP is the standard for supervisory messages IP and ICMP are designed to work together; Even have adjacent RFC (standard) numbers

helene
Download Presentation

Internet Control Message Protocol (ICMP)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Internet Control Message Protocol (ICMP)

  2. ICMP • Internet Control Message Protocol • IP is the delivery standard at the TCP/IP internet layer • ICMP is the standard for supervisory messages • IP and ICMP are designed to work together; Even have adjacent RFC (standard) numbers • ICMP message is carried in the information field of an IP packet

  3. ICMP • Several ICMP Message Types • Error messages warn of problems • Not error correction, because there is no transmission of lost or damaged packets Error Message

  4. ICMP • Several ICMP Message Types • ICMP query request message asks host if it is active • Queried host sends back a query response message • Also called “Echo” and “Ping” Echo Request Echo Response

  5. ICMP • Several ICMP Message Types • Flow control: Source quench ICMP message asks other side to slow down Source Quench

  6. Source Quench • Weak form of flow control • When host sending packets gets source quench, it slows down • If another source quench message arrives, slows down even more • If source quench messages stop, slowly increases speed

  7. ICMP • ICMP Implements Other Supervisory Messages • We have only given a few important examples

More Related