Switch User Manual

DHCP Server and Relay Agent Commands 885
Command Mode
DHCP Pool Configuration mode
User Guidelines
The option information must match the selected option type and length.
Options cannot be longer than 255 characters in length. The option
information is conveyed in the TLV specified by the code parameter in the
DHCP OFFER, DHCP ACK, DHCP INFORM ACK and DHCP
BOOTREPLY messages.
Figure 40-1 lists the options that can be configured and their fixed length,
minimum length, and length multiple requirements.
Figure 40-1. Option Codes and Lengths
Option Code Fixed Length Minimum Length Multiple Of
2 (Time Offset) 4
–
–
4 (Time Server) – 4 4
7 (Log Server) – 4 4
8 (Cookie Server) – 4 4
9 (LPR Server)–44
10 (Impress Server) – 4 4
11 (Resource Location
Server)
–44
12 (Host Name) –1–
13 (Boot File Size) 2 – –
14 (Merit File Dump) – 1 –
16 (Swap Server) 4––
17 (Root Path) – 1 –
18 (Extensions Path) – 1 –
19 (IP Forwarding
Enable)
1––
20 (Non-local Source
Routing)
1––
2CSPC4.XCT-SWUM2XX1.book Page 885 Monday, October 3, 2011 11:05 AM