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SonicOS Enhanced 4.0 Administrator Guide
Current DHCP Leases
The current DHCP lease information is displayed in the Current DHCP Leases table. Each
binding entry displays the IP Address, the Ethernet Address, and the Type of binding
(Dynamic, Dynamic BOOTP, or Static BOOTP).
To delete a binding, which frees the IP address on the DHCP server, click the Delete icon
next to the entry. For example, use the Delete icon to remove a host when it has been
removed from the network, and you need to reuse its IP address.
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