Configuring Static DHCP Entries
Static entries are IP addresses assigned to servers requiring permanent IP settings. Because SonicOS allows multiple DHCP scopes per interface, there is no requirement that the subnet range is attached to the interface when configuring DHCP scopes.
To configure static entries, follow these steps:
-
In the Network > DHCP Server page, at the bottom of the DHCP Server Lease Scopes table, click Add Static. The Static Entry Configuration window is displayed.
General Settings
-
In the General tab, make sure the Enable this DHCP Scope is checked, if you want to enable this entry.
-
Enter a name for the static DNS entry in the Entry Name field.
-
Type the device IP address in the Static IP Address field.
-
Type the device Ethernet (MAC) address in the Ethernet Address field.
-
Type the number of minutes an IP address is used before it is issued another IP address in the Lease Time (minutes) field. 1440 minutes (24 hours) is the default value.
-
To populate the Default Gateway and Subnet Mask fields with default values for a certain interface, select the Interface Pre-Populate checkbox near the bottom of the page and choose the interface from the drop-down list. The populated IP addresses are in the same private subnet as the selected interface.
Note: : To select an interface from the Interface menu, it must first be fully configured and it must be of the zone type, LAN, WLAN, or DMZ, or be a VLAN sub-interface.
-
Use the populated gateway address or type the IP address of the gateway into the Default Gateway field.
-
Use the populated subnet mask or type the gateway subnet mask into the Subnet Mask field.
DNS/WINS Settings
-
Click the DNS/WINS tab to continue configuring the DHCP Server feature.
-
If you have a domain name for the DNS Server, type it in the Domain Name field.
-
Inherit DNS Settings Dynamically from the SonicWALL’s DNS settings is selected by default. When selected, the DNS Server IP fields are unavailable.
-
If you do not want to use the SonicWALL security appliance network settings, select Specify Manually, and type the IP address of your DNS Server in the DNS Server 1 field. You can specify two additional DNS servers.
-
If you have WINS running on your network, type the WINS server IP address(es) in the WINS Server 1 field. You can specify an additional WINS server.
Advanced Settings
-
Click on the Advanced tab. The Advanced tab allows you to configure the SonicWALL DHCP server to send Cisco Call Manager information to VoIP clients on the network.
-
Enter the IP address or FQDN of your VoIP Call Manager in the Call Manager 1 field. You can add two additional VoIP Call Manager addresses.
-
Under Network Boot Settings, in the Next Server field, enter the IP address of the PXE boot server (TFTP server) that a PXE client uses during the next stage of the boot process.
The fields under Network Boot Settings are used in a Pre-boot Execution Environment (PXE), in which the client boots up using files obtained over a network interface. The PXE client obtains the IP address and name of the PXE boot server, and the boot file name, from the DHCP server.
When using these options, select PXE under DHCP Generic Options.
-
In the Boot File field, type in the name of the boot file that the PXE client can get over TFTP from the PXE boot server.
-
In the Server Name field, type in the DNS host name of the PXE boot server (TFTP server).
-
For information on configuring DHCP Generic Options see Configuring DHCP Generic Options for DHCP Lease Scopes.
-
Click OK to add the settings to the SonicWALL.
-
Click Accept for the settings to take effect on the SonicWALL.
For more information on VoIP support features on the SonicWALL security appliance, see VoIP Overview.
Configuring DHCP Generic Options for DHCP Lease Scopes
This section provides configuration tasks for DHCP generic options for lease scopes.
Note: Before generic options for a DHCP lease scope can be configured, a static or dynamic DHCP server lease scope must be created.
The DHCP Option Numbers provides a list of DHCP options by RFC-assigned option number.
To configure DHCP generic options for DHCP server lease scopes, perform the following tasks:
-
If modifying an existing DHCP lease scope, locate the lease scope under DHCP Server Lease Scopes on the Network > DHCP Server page and click the Configure icon, then click the Advanced tab. If creating a new DHCP lease scope, click the Advanced tab.
-
Select a DHCP option or option group in the DHCP Generic Option Group drop-down menu.
When the Network Boot Settings fields are configured for use with PXE, select PXE here.
-
To always use DHCP options for this DHCP server lease scope, check the box next to Send Generic options always.
-
Click OK.
DHCP Option Numbers
This section provides a list of RFC-defined DHCP option numbers and descriptions:
|
|
|
Option Number
|
Name
|
Description
|
|
2
|
Time Offset
|
Time offset in seconds from UTC
|
|
3
|
Router
|
N/4 router addresses
|
|
4
|
Time Servers
|
N/4 time server addresses
|
|
5
|
Name Servers
|
N/4 IEN-116 server addresses
|
|
6
|
DNS Servers
|
N/4 DNS server addresses
|
|
7
|
Log Servers
|
N/4 logging server addresses
|
|
8
|
Cookie Servers
|
N/4 quote server addresses
|
|
9
|
LPR Servers
|
N/4 printer server addresses
|
|
10
|
Impress Servers
|
N/4 impress server addresses
|
|
11
|
RLP Servers
|
N/4 RLP server addresses
|
|
12
|
Host Name
|
Hostname string
|
|
13
|
Boot File Size
|
Size of boot file in 512 byte chunks
|
|
14
|
Merit Dump File
|
Client to dump and name of file to dump to
|
|
15
|
Domain Name
|
The DNS domain name of the client
|
|
16
|
Swap Server
|
Swap server addresses
|
|
17
|
Root Path
|
Path name for root disk
|
|
18
|
Extension File
|
Patch name for more BOOTP info
|
|
19
|
IP Layer Forwarding
|
Enable or disable IP forwarding
|
|
20
|
Src route enabler
|
Enable or disable source routing
|
|
21
|
Policy Filter
|
Routing policy filters
|
|
22
|
Maximum DG Reassembly Size
|
Maximum datagram reassembly size
|
|
23
|
Default IP TTL
|
Default IP time-to-live
|
|
24
|
Path MTU Aging Timeout
|
Path MTU aging timeout
|
|
25
|
MTU Plateau
|
Path MTU plateau table
|
|
26
|
Interface MTU Size
|
Interface MTU size
|
|
27
|
All Subnets Are Local
|
All subnets are local
|
|
28
|
Broadcast Address
|
Broadcast address
|
|
29
|
Perform Mask Discovery
|
Perform mask discovery
|
|
30
|
Provide Mask to Others
|
Provide mask to others
|
|
31
|
Perform Router Discovery
|
Perform router discovery
|
|
32
|
Router Solicitation Address
|
Router solicitation address
|
|
33
|
Static Routing Table
|
Static routing table
|
|
34
|
Trailer Encapsulation
|
Trailer encapsulation
|
|
35
|
ARP Cache Timeout
|
ARP cache timeout
|
|
36
|
Ethernet Encapsulation
|
Ethernet encapsulation
|
|
37
|
Default TCP Time to Live
|
Default TCP time to live
|
|
38
|
TCP Keepalive Interval
|
TCP keepalive interval
|
|
39
|
TCP Keepalive Garbage
|
TCP keepalive garbage
|
|
40
|
NIS Domain Name
|
NIS domain name
|
|
41
|
NIS Server Addresses
|
NIS server addresses
|
|
42
|
NTP Servers Addresses
|
NTP servers addresses
|
|
43
|
Vendor Specific Information
|
Vendor specific information
|
|
44
|
NetBIOS Name Server
|
NetBIOS name server
|
|
45
|
NetBIOS Datagram Distribution
|
NetBIOS datagram distribution
|
|
46
|
NetBIOS Node Type
|
NetBIOS node type
|
|
47
|
NetBIOS Scope
|
NetBIOS scope
|
|
48
|
X Window Font Server
|
X window font server
|
|
49
|
X Window Display Manager
|
X window display manager
|
|
50
|
Requested IP address
|
Requested IP address
|
|
51
|
IP Address Lease Time
|
IP address lease time
|
|
52
|
Option Overload
|
Overload “sname” or “file”
|
|
53
|
DHCP Message Type
|
DHCP message type
|
|
54
|
DHCP Server Identification
|
DHCP server identification
|
|
55
|
Parameter Request List
|
Parameter request list
|
|
56
|
Message
|
DHCP error message
|
|
57
|
DHCP Maximum Message Size
|
DHCP maximum message size
|
|
58
|
Renew Time Value
|
DHCP renewal (T1) time
|
|
59
|
Rebinding Time Value
|
DHCP rebinding (T2) time
|
|
60
|
Client Identifier
|
Client identifier
|
|
61
|
Client Identifier
|
Client identifier
|
|
62
|
Netware/IP Domain Name
|
Netware/IP domain name
|
|
63
|
Netware/IP sub Options
|
Netware/IP sub options
|
|
64
|
NIS+ V3 Client Domain Name
|
NIS+ V3 client domain name
|
|
65
|
NIS+ V3 Server Address
|
NIS+ V3 server address
|
|
66
|
TFTP Server Name
|
TFTP server name
|
|
67
|
Boot File Name
|
Boot file name
|
|
68
|
Home Agent Addresses
|
Home agent addresses
|
|
69
|
Simple Mail Server Addresses
|
Simple mail server addresses
|
|
70
|
Post Office Server Addresses
|
Post office server addresses
|
|
71
|
Network News Server Addresses
|
Network news server addresses
|
|
72
|
WWW Server Addresses
|
WWW server addresses
|
|
73
|
Finger Server Addresses
|
Finger server addresses
|
|
74
|
Chat Server Addresses
|
Chat server addresses
|
|
75
|
StreetTalk Server Addresses
|
StreetTalk server addresses
|
|
76
|
StreetTalk Directory Assistance Addresses
|
StreetTalk directory assistance addresses
|
|
77
|
User Class Information
|
User class information
|
|
78
|
SLP Directory Agent
|
Directory agent information
|
|
79
|
SLP Service Scope
|
Service location agent scope
|
|
80
|
Rapid Commit
|
Rapid commit
|
|
81
|
FQDN, Fully Qualified Domain Name
|
Fully qualified domain name
|
|
82
|
Relay Agent Information
|
Relay agent information
|
|
83
|
Internet Storage Name Service
|
Internet storage name service
|
|
84
|
Undefined
|
N/A
|
|
85
|
Novell Directory Servers
|
Novell Directory Services servers
|
|
86
|
Novell Directory Server Tree Name
|
Novell Directory Services server tree name
|
|
87
|
Novell Directory Server Context
|
Novell Directory Services server context
|
|
88
|
BCMCS Controller Domain Name List
|
CMCS controller domain name list
|
|
89
|
BCMCS Controller IPv4 Address List
|
BCMCS controller IPv4 address list
|
|
90
|
Authentication
|
Authentication
|
|
91
|
Undefined
|
N/A
|
|
92
|
Undefined
|
N/A
|
|
93
|
Client System
|
Client system architecture
|
|
94
|
Client Network Device Interface
|
Client network device interface
|
|
95
|
LDAP Use
|
Lightweight Directory Access Protocol
|
|
96
|
Undefined
|
N/A
|
|
97
|
UUID/GUID Based Client Identifier
|
UUID/GUID-based client identifier
|
|
98
|
Open Group’s User Authentication
|
Open group’s user authentication
|
|
99
|
Undefined
|
N/A
|
|
100
|
Undefined
|
N/A
|
|
101
|
Undefined
|
N/A
|
|
102
|
Undefined
|
N/A
|
|
103
|
Undefined
|
N/A
|
|
104
|
Undefined
|
N/A
|
|
105
|
Undefined
|
N/A
|
|
106
|
Undefined
|
N/A
|
|
107
|
Undefined
|
N/A
|
|
108
|
Undefined
|
N/A
|
|
109
|
Autonomous System Number
|
Autonomous system number
|
|
110
|
Undefined
|
|
|
111
|
Undefined
|
|
|
112
|
NetInfo Parent Server Address
|
NetInfo parent server address
|
|
113
|
NetInfo Parent Server Tag
|
NetInfo parent server tag
|
|
114
|
URL:
|
URL
|
|
115
|
Undefined
|
N/A
|
|
116
|
Auto Configure
|
DHCP auto-configuration
|
|
117
|
Name Service Search
|
Name service search
|
|
118
|
Subnet Collection
|
Subnet selection
|
|
119
|
DNS Domain Search List
|
DNS domain search list
|
|
120
|
SIP Servers DHCP Option
|
SIP servers DHCP option
|
|
121
|
Classless Static Route Option
|
Classless static route option
|
|
122
|
CCC, CableLabs Client Configuration
|
CableLabs client configuration
|
|
123
|
GeoConf
|
GeoConf
|
|
124
|
Vendor-Identifying Vendor Class
|
Vendor-identifying vendor class
|
|
125
|
Vendor Identifying Vendor Specific
|
Vendor-identifying vendor specific
|
|
126
|
Undefined
|
N/A
|
|
127
|
Undefined
|
N/A
|
|
128
|
TFTP Server IP Address
|
TFTP server IP address for IP phone software load
|
|
129
|
Call Server IP Address
|
Call server IP address
|
|
130
|
Discrimination String
|
Discrimination string to identify vendor
|
|
131
|
Remote Statistics Server IP Address
|
Remote statistics server IP address
|
|
133
|
802.1Q L2 Priority
|
IEEE 802.1Q layer 2 priority
|
|
134
|
Diffserv Code Point
|
Diffserv code point for VoIP signalling and media streams
|
|
135
|
HTTP Proxy For Phone Applications
|
HTTP proxy for phone-specific applications
|
|
136
|
Undefined
|
N/A
|
|
137
|
Undefined
|
N/A
|
|
138
|
Undefined
|
N/A
|
|
139
|
Undefined
|
N/A
|
|
140
|
Undefined
|
N/A
|
|
141
|
Undefined
|
N/A
|
|
142
|
Undefined
|
N/A
|
|
143
|
Undefined
|
N/A
|
|
144
|
Undefined
|
N/A
|
|
145
|
Undefined
|
N/A
|
|
146
|
Undefined
|
N/A
|
|
147
|
Undefined
|
N/A
|
|
148
|
Undefined
|
N/A
|
|
149
|
Undefined
|
N/A
|
|
150
|
TFTP Server Address, Etherboot, GRUB Config
|
TFTP server address, Etherboot, GRUB configuration
|
|
151
|
Undefined
|
|
|
152
|
Undefined
|
N/A
|
|
153
|
Undefined
|
N/A
|
|
154
|
Undefined
|
N/A
|
|
155
|
Undefined
|
N/A
|
|
156
|
Undefined
|
N/A
|
|
157
|
Undefined
|
N/A
|
|
158
|
Undefined
|
N/A
|
|
159
|
Undefined
|
N/A
|
|
160
|
Undefined
|
N/A
|
|
161
|
Undefined
|
N/A
|
|
162
|
Undefined
|
N/A
|
|
163
|
Undefined
|
N/A
|
|
164
|
Undefined
|
N/A
|
|
165
|
Undefined
|
N/A
|
|
166
|
Undefined
|
N/A
|
|
167
|
Undefined
|
N/A
|
|
168
|
Undefined
|
N/A
|
|
169
|
Undefined
|
N/A
|
|
170
|
Undefined
|
N/A
|
|
171
|
Undefined
|
N/A
|
|
172
|
Undefined
|
N/A
|
|
173
|
Undefined
|
N/A
|
|
174
|
Undefined
|
N/A
|
|
175
|
Ether Boot
|
Ether Boot
|
|
176
|
IP Telephone
|
IP telephone
|
|
177
|
Ether Boot PacketCable and CableHome
|
Ether Boot PacketCable and CableHome
|
|
178
|
Undefined
|
N/A
|
|
179
|
Undefined
|
N/A
|
|
180
|
Undefined
|
N/A
|
|
181
|
Undefined
|
N/A
|
|
182
|
Undefined
|
N/A
|
|
183
|
Undefined
|
N/A
|
|
184
|
Undefined
|
N/A
|
|
185
|
Undefined
|
N/A
|
|
186
|
Undefined
|
N/A
|
|
187
|
Undefined
|
N/A
|
|
188
|
Undefined
|
N/A
|
|
189
|
Undefined
|
N/A
|
|
190
|
Undefined
|
N/A
|
|
191
|
Undefined
|
N/A
|
|
192
|
Undefined
|
N/A
|
|
193
|
Undefined
|
N/A
|
|
194
|
Undefined
|
N/A
|
|
195
|
Undefined
|
N/A
|
|
196
|
Undefined
|
N/A
|
|
197
|
Undefined
|
N/A
|
|
198
|
Undefined
|
N/A
|
|
199
|
Undefined
|
N/A
|
|
200
|
Undefined
|
N/A
|
|
201
|
Undefined
|
N/A
|
|
202
|
Undefined
|
N/A
|
|
203
|
Undefined
|
N/A
|
|
204
|
Undefined
|
N/A
|
|
205
|
Undefined
|
N/A
|
|
206
|
Undefined
|
N/A
|
|
207
|
Undefined
|
N/A
|
|
208
|
pxelinux.magic (string) = 241.0.116.126
|
pxelinux.magic (string) = 241.0.116.126
|
|
209
|
pxelinux.configfile (text)
|
pxelinux.configfile (text)
|
|
210
|
pxelinux.pathprefix (text)
|
pxelinux.pathprefix (text)
|
|
211
|
pxelinux.reboottime
|
pxelinux.reboottime
|
|
212
|
Undefined
|
N/A
|
|
213
|
Undefined
|
N/A
|
|
214
|
Undefined
|
N/A
|
|
215
|
Undefined
|
N/A
|
|
216
|
Undefined
|
N/A
|
|
217
|
Undefined
|
N/A
|
|
218
|
Undefined
|
N/A
|
|
219
|
Undefined
|
N/A
|
|
220
|
Subnet Allocation
|
Subnet allocation
|
|
221
|
Virtual Subnet Allocation
|
Virtual subnet selection
|
|
222
|
Undefined
|
N/A
|
|
223
|
Undefined
|
N/A
|
|
224
|
Private Use
|
Private use
|
|
225
|
Private Use
|
Private use
|
|
226
|
Private Use
|
Private use
|
|
227
|
Private Use
|
Private use
|
|
228
|
Private Use
|
Private use
|
|
229
|
Private Use
|
Private use
|
|
230
|
Private Use
|
Private use
|
|
231
|
Private Use
|
Private use
|
|
232
|
Private Use
|
Private use
|
|
233
|
Private Use
|
Private use
|
|
234
|
Private Use
|
Private use
|
|
235
|
Private Use
|
Private use
|
|
236
|
Private Use
|
Private use
|
|
237
|
Private Use
|
Private use
|
|
238
|
Private Use
|
Private use
|
|
239
|
Private Use
|
Private use
|
|
240
|
Private Use
|
Private use
|
|
241
|
Private Use
|
Private use
|
|
242
|
Private Use
|
Private use
|
|
243
|
Private Use
|
Private use
|
|
244
|
Private Use
|
Private use
|
|
245
|
Private Use
|
Private use
|
|
246
|
Private Use
|
Private use
|
|
247
|
Private Use
|
Private use
|
|
248
|
Private Use
|
Private use
|
|
249
|
Private Use
|
Private use
|
|
250
|
Private Use
|
Private use
|
|
251
|
Private Use
|
Private use
|
|
252
|
Private Use
|
Private use
|
|
253
|
Private Use
|
Private use
|
|
254
|
Private Use
|
Private use
|