DHCP

DHCP assigns each guest device an IP address, gateway, DNS server, and any additional options required to connect to the guest network and access the internet.

In addition to standard Dynamic and Static Leases, the DHCP server also supports custom DHCP Options.

Static Leases

Static DHCP Leases are assigned to specific devices based on their MAC address.

Static Leases can be added by clicking on the Add Static Lease button in the Visible Devices Table.

Alternatively, static leases can be added manually by filling out the form in the New DHCP Static Lease section. Devices added as a Static Autologin Device will also appear in the Static Leases Table of the DHCP Page.

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Dynamic Leases

This table shows all currently active Dynamic DHCP Leases assigned by the DHCP server to Surf-LAN clients.

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Subnets

This table shows all currently configured DHCP subnets as well as their assigned DHCP ranges/pools.

The DHCP server will automatically assign IP addresses from within the defined ranges to Surf-LAN clients.

You can define additional DHCP subnets and ranges by filling out the form in the New Subnet section.

When you have activated VLAN support on the IACBOX you can also create DHCP scopes for individual VLANs by selecting the desired interface in the Interface dropdown.

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Options

In some cases it may be necessary to add additional DHCP Options.

There is a wide range of Options available that can be assigned to DHCP clients. These options can be used to provide additional configuration information to DHCP clients, such as specifying a TFTP server or setting custom vendor-specific options. DHCP Options can be assigned on three different scopes:

  • Global Scope: Applies to all DHCP clients.
  • Network Scope: Applies to all DHCP clients on the selected network interface.
  • Host Scope: Applies to a specific DHCP client identified by its MAC address.

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List of available DHCP Options

2 - Time Offset3 - Router4 - Time Server5 - Name Server
6 - Domain Server7 - Log Server8 - Quotes Server9 - LPR Server
10 - Impress Server11 - RLP Server13 - Boot File Size14 - Merit Dump File
15 - Domain Name18 - Extension File19 - Forward On/Off20 - SrcRte? On/Off
21 - Policy Filter22 - Max DG Assembly23 - Default IP TTL24 - MTU Timeout
25 - MTU Plateau26 - MTU Interface27 - MTU Subnet28 - Broadcast Address
29 - Mask Discovery30 - Mask Supplier31 - Router Discovery32 - Router Request
33 - Static Route34 - Trailers35 - ARP Timeout36 - Ethernet
37 - Default TCP TTL38 - Keepalive Time39 - Keepalive Data40 - NIS Domain
41 - NIS Servers42 - NTP Server44 - NETBIOS Name Srv45 - NETBIOS Dist Srv
46 - NETBIOS Node Type47 - NETBIOS Scope48 - X Window Font49 - X Window Manager
52 - Overload54 - DHCP Server ID56 - DHCP Message57 - DHCP Max Msg Size
60 - Class ID62 - NetWareIP? Domain63 - NetWareIP? Option64 - NIS-Domain-Name
65 - NIS-Server-Addr66 - Server-Name67 - Bootfile-Name68 - Home-Agent-Addrs
70 - POP3 Server71 - NNTP Server72 - WWW Server73 - Finger Server
74 - IRC Server75 - StreetTalk? Server76 - STDA Server77 - User Class
78 - Directory Agent79 - Service Scope85 - NDS Server86 - NDS Tree Name
87 - NDS Context88 - BCMCS Controller Domain Name List89 - BCMCS Controller IPv4 Address Option93 - Client System
94 - Client NDI97 - UUID/GUID98 - User Auth99 - GEOCONF_CIVIC
100 - PCode101 - TCode112 - Netinfo Address113 - Netinfo Tag
116 - Auto Config117 - Name Service Search119 - Domain Search124 - V-I Vendor Class
125 - V-I Vendor Specific Information136 - Pana Agent137 - V4 Lost138 - Capwap AC V4
141 - SIP UA Configuration Service Domains146 - RDNSS Selection159 - DHCPv4 Port Parameters212 - 6RD
213 - V4 Access Domain