Figure 42-1. Option Codes and Lengths
Option Code
34 (Trailer
Encapsulation)
35 (ARP Cache Timeout) 4
36 (Ethernet
Encapsulation)
37 (TCP TTL)
38 (TCP Keepalive
Interval)
39 (TCP Keepalive
Garbage)
40 (Network Information
Service)
41 (Network Information
Servers)
42 (NTP Servers)
43 (Vendor Specific
Information)
45 (NetBIOS Datagram
Distribution)
47 (Netbois Scope)
48 (X-Windows Font
Server)
49 (X-Windows Display
Manager)
58 (Renewal Time T1)
59 (Rebinding Time T2) 4
60 (Vendor Class)
64 (NIS Domain)
65 (NIS Servers)
66 (TFTP Server)
926
DHCP Server and Relay Agent Commands
(continued)
Fixed Length
Minimum Length Multiple Of
1
–
–
1
–
1
–
4
–
1
–
–
1
–
4
–
4
1
–
–
4
–
1
–
4
–
4
4
–
–
–
1
–
1
–
4
–
1
–
–
–
–
–
–
–
4
4
–
4
–
4
4
–
–
–
–
4
–