| BOOTP / DHCP option 39, TCP keepalive garbage |
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Description | Glossary | RFCs | Publications | Obsolete RFCs |
| Protocol suite: | TCP/IP. |
| Protocol type: | Application layer configuration protocol. |
| Option length: | bytes. |
| Links: | IANA: BOOTP and DHCP options. |
This option specifies if the client should send TCP keepalive messages with a byte of garbage for compatibility with older implementations.
| MAC header | IP header | UDP header | BOOTP | DHCP header | BOOTP / DHCP option 39 | Data ::: |
BOOTP / DHCP option 39:
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Code | Length | Value | |||||||||||||||||||||
Code.
8 bits.
Always set to 39.
Option code.
Length.
8 bits.
Always set to 1.
Size of the option data in bytes.
Value. 8 bits.
Value Description 0 Do not send garbage byte. 1 Send garbage byte.
RFCs:
[RFC 2132] DHCP Options and BOOTP Vendor Extensions.
[RFC 1533] DHCP Options and BOOTP Vendor Extensions.
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Description | Glossary | RFCs | Publications | Obsolete RFCs |