What ICMP type is ping?
Contents
What ICMP type is ping?
Table 3.2 ICMP Message Types
| Type | Description ICMP Message Types |
|---|---|
| 0 | Echo Reply (Ping Reply, used with Type 8, Ping Request) |
| 3 | Destination Unreachable |
| 4 | Source Quench |
| 5 | Redirect |
What is the ICMP code field used for?
ICMP is part of the Internet protocol suite as defined in RFC 792. ICMP messages are typically used for diagnostic or control purposes or generated in response to errors in IP operations (as specified in RFC 1122). ICMP errors are directed to the source IP address of the originating packet.
What is ICMP timestamp ping?
Ping sends ICMP Echo Request messages once a second. A ping packet also includes a timestamp from the sending host. When an Echo Reply is received the round-trip time is calculated and displayed. Ping may be used with broadcast and multicast addresses, so one request packet may get multiple response packets.
What is the response to ping?
echo reply
The ping command sends an ICMP echo request to a device on the network, and the device immediately responds with an ICMP echo reply. Sometimes, a company’s network security policy requires ping (ICMP echo reply) to be disabled on all devices to make them more difficult to be discovered by unauthorized persons.
What layer is ICMP protocol?
layer 3 protocol
Therefore, in the topic on TCP/IP-based layered network, ICMP is shown as a layer 3 protocol. ICMP is probably most well known as the message protocol used for the ping command. A ping command sends an ICMP echo request to the target host. The target host responds with an echo reply.
What OSI layer is ping?
layer 3
The ping command uses the services of the Internet Control Message Protocol (ICMP), the latter being encapsulated in the IP header. Therefore, the ping utility operates basically on layer 3 (the Network layer) of the OSI model.
Which port is standard for Ping?
ICMP (Internet Control Message Protocol), which runs on Port Number 1, is the protocol that is best known for the PING command in Windows and Linux/Unix OS.
Is Ping TCP or UDP?
The standard ping command does not use TCP or UDP. It uses ICMP. To be more precise ICMP type 8 (echo message) and type 0 (echo reply message) are used.
What is an ICMP response?
ICMP is part of the Internet protocol suite as defined in RFC 792. ICMP messages are typically used for diagnostic or control purposes or generated in response to errors in IP operations (as specified in RFC 1122).