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RFC 1700 Assigned Numbers October


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Reynolds & Postel [Page 87]

RFC 1700 Assigned Numbers October 1994

BOOTP AND DHCP PARAMETERS

The Bootstrap Protocol (BOOTP) [RFC951] describes an IP/UDP

bootstrap protocol (BOOTP) which allows a diskless client machine to

discover its own IP address, the address of a server host, and the

name of a file to be loaded into memory and executed. The Dynamic

Host Configuration Protocol (DHCP) [RFC1531] provides a framework for

automatic configuration of IP hosts. The "DHCP Options and BOOTP

Vendor Information Extensions" [RFC1533] describes the additions to the

Bootstrap Protocol (BOOTP) which can also be used as options with the

Dynamic Host Configuration Protocol (DHCP).

BOOTP Vendor Extensions and DHCP Options are listed below:

Tag Name Data Length Meaning

--- ---- ----------- -------

0 Pad 0 None

1 Subnet Mask 4 Subnet Mask Value

2 Time Offset 4 Time Offset in

Seconds from UTC

3 Gateways N N/4 Gateway addresses

4 Time Server N N/4 Timeserver addresses

5 Name Server N N/4 IEN-116 Server addresses

6 Domain Server N N/4 DNS Server addresses

7 Log Server N N/4 Logging Server addresses

8 Quotes Server N N/4 Quotes Server addresses

9 LPR Server N N/4 Printer Server addresses

10 Impress Server N N/4 Impress Server addresses

11 RLP Server N N/4 RLP Server addresses

12 Hostname N Hostname string

13 Boot File Size 2 Size of boot file in 512 byte

chunks

14 Merit Dump File Client to dump and name

the file to dump it to

15 Domain Name N The DNS domain name of the

client

16 Swap Server N Swap Server addeess

17 Root Path N Path name for root disk

18 Extension File N Path name for more BOOTP info

19 Forward On/Off 1 Enable/Disable IP Forwarding

20 SrcRte On/Off 1 Enable/Disable Source Routing

21 Policy Filter N Routing Policy Filters

22 Max DG Assembly 2 Max Datagram Reassembly Size

23 Default IP TTL 1 Default IP Time to Live

24 MTU Timeout 4 Path MTU Aging Timeout


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