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ICMP Echo Reply - Definition and Overview |
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The Echo Reply is an ICMP message generated in response to an ICMP Echo Request message, and is mandatory for all hosts and routers.
Message Format:
| 00 |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
14 |
15 |
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20 |
21 |
22 |
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24 |
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| Type = 0 |
Code = 0 |
Header Checksum |
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Identifier |
<p align="center">Sequence Number |
</table>
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Data ::: |
</table>
- Type and Code must be set to 0.
- The Identifier and Sequence Number can be used by the client to manage which Echo Requests are associated with the Echo Replies.
- The Data received by the Echo Request must be entirely included in the Echo Reply.
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Example Usage of Reply |
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Boncas: kisi2ny yg mana? RT @pardele: Gue si cuma dr situ put RT @putrimeisita: eh eh belajar pkn dr kisi2 aja kan yaa? Reply pleaaaaase |
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JuStINB_GirL: gonna log out hope justin dm or Reply of follows me wish me luck |
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flickatt: Reply I have a comp u know hat right? |
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