SlideShare a Scribd company logo

ICMP

•
•
S
selvakumar_b1985

The Internet Control Message Protocol (ICMP) allows devices on an IP network to send error and control messages to other devices to report issues or unexpected network conditions. It provides communication between IP layers to facilitate troubleshooting by transmitting error messages with a type and code field as well as checksum for verification. Common ICMP message types include queries to request information and error messages sent in response to problems with IP datagrams.

Related slideshows

Arp (address resolution protocol)
Arp (address resolution protocol)Arp (address resolution protocol)
Arp (address resolution protocol)
 
Arp and rarp
Arp and rarpArp and rarp
Arp and rarp
 
Chap 10 igmp
Chap 10 igmpChap 10 igmp
Chap 10 igmp
 
1 of 7
Internet Control Message Protocol
ICMP  The Internet Control Message Protocol allows gateways or hosts in an internet to send error or control messages to other gateways or hosts  ICMP provides communication between the Internet Protocol on one machine and the Internet Protocol on another. This is to allow gateways or hosts in an internet to report errors or provide information about unexpected circumstances.
ICMP Header Format,  Type (8 bit) – type of ICMP message  Code (8 bit) - sub type of ICMP message  Checksum (16 bit)-for error detection. Similar to IP checksum.
ICMP -Types  ICMP Query Message, ICMP Query Message Types of Messages ICMP Error Message Host ICMP Request ICMP Reply Host or Router
ICMP -Types
ICMPTypes  ICMP Error Message, Host IP Datagram ICMP Error Message Host or Router IP Datagram is discarded
ICMPTypes

More Related Content

ICMP

  • 2. ICMP  The Internet Control Message Protocol allows gateways or hosts in an internet to send error or control messages to other gateways or hosts  ICMP provides communication between the Internet Protocol on one machine and the Internet Protocol on another. This is to allow gateways or hosts in an internet to report errors or provide information about unexpected circumstances.
  • 3. ICMP Header Format,  Type (8 bit) – type of ICMP message  Code (8 bit) - sub type of ICMP message  Checksum (16 bit)-for error detection. Similar to IP checksum.
  • 4. ICMP -Types  ICMP Query Message, ICMP Query Message Types of Messages ICMP Error Message Host ICMP Request ICMP Reply Host or Router
  • 6. ICMPTypes  ICMP Error Message, Host IP Datagram ICMP Error Message Host or Router IP Datagram is discarded