ICMP Type 0 Echo Reply
ICMP — Internet Control Message Protocol
The response to an ICMP Type 8 Echo Request.
The data received in the echo message must be returned in the echo reply message.
Source RFC 792.
Responses will have
- Same identifier
- Same sequence number
- Same data
Header
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
┌───────────────┬───────────────┬───────────────────────────────┐
│ Type = 0 │ Code = 0 │ Checksum │
├───────────────┴───────────────┼───────────────────────────────┤
│ Identifier │ Sequence Number │
├───────────────────────────────┴───────────────────────────────┤
│ Data │
└───────────────────────────────────────────────────────────────┘
References
RFC 792: Internet Control Message Protocol | RFC Editor