Configuring Custom Dhcp Options (Nsm Procedure) - Juniper NETWORK AND SECURITY MANAGER 2010.4 - CONFIGURING SCREENOS DEVICES GUIDE REV 01 Manual

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Configuring Custom DHCP Options (NSM Procedure)

Copyright © 2010, Juniper Networks, Inc.
Setting Interface Properties Using the General Properties Screen on page 53
Interface Types in ScreenOS Devices Overview on page 50
Configuring Custom DHCP Options (NSM Procedure) on page 59
When configuring a DHCP server, you can also configure custom DHCP options to handle
address assignment for voice-over-IP (VoIP) phones.
NOTE: Custom DHCP options are not supported on the NetScreen-500, the
NetScreen-5200, the NetScreen-5400, the ISG1000 and the ISG2000.
A custom DHCP option contains:
Option Name—A user-defined, unique name that identifies the custom option.
Code—An arbitrary integer that represents the option type. Use the option code to
represent the custom option you want to configure. For each DHCP server, you can
configure an unlimited number of custom DHCP options; however, the option code for
each custom option must be unique, and cannot match the option code for a predefined
option (DHCP contains several predefined option codes). Table 23 on page 59 lists
the predefined option codes and associated RFC 2132 terms:
Table 23: DHCP Option Codes
Netmask 1
Gateway 3
DNS1, DNS2, DNS3 6
Domain Name 15
WINS1, WINS2 44
Lease 51
SMTP 69
POP3 70
News 71
NIS1, NIS2 112
NISTAG 113
Chapter 3: Network Settings
59