Differences
This shows you the differences between two versions of the page.
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web_gui:dhcp_server [2010/11/08 16:42] mats |
web_gui:dhcp_server [2010/12/14 11:01] (current) mats |
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| ====== DHCP Server - Advanced ====== | ====== DHCP Server - Advanced ====== | ||
| - | DHCP stands for Dynamic Host Configuration Protocol and is a protocol for auto-configuration of IP interfaces. [[wp>DHCP|Learn more about DHCP]] | + | DHCP stands for Dynamic Host Configuration Protocol and is a protocol for auto-configuration of IP interfaces. |
| + | |||
| + | Read more: [[troubleshooting:dhcp_server_problems|DHCP server problems]] [[wp>DHCP|DHCP]] | ||
| ==== Fixed addresses ==== | ==== Fixed addresses ==== | ||
| + | {{ :web_gui:dhcp_server.png?329|DHCP Server in rel 5.30}} | ||
| + | Here you can specify which IP addresses the DHCP server should give to certain clients. :!: Usually this is not necessary - the DHCP server chooses addresses by itself from the specified address range. | ||
| - | Here you can specify which IP addresses the DHCP server should give to certain clients. (Usually this is not necessary - the DHCP server chooses addresses by itself from the specified address range.) | + | **IP Address** the IP address to be given to the client. Must be within the corresponding port's subnet, but does not need to be within the "From/To" range given to the DHCP server (on the [[network_page#DHCP Server|Network page]]). |
| - | **IP Address** the IP address to be given to the client. Must be within the corresponding port's subnet, but does not need to be within the "From/To" range given to the DHCP server. | + | **MAC address** the unique MAC address of the client to receive the IP address. [[wp>MAC_address|MAC address]] |
| - | + | ||
| - | **MAC address** the unique MAC address of the client to receive the IP address. | + | |
| **Known hosts** list of hosts known by this unit. The list can be used to ease configuration by pressing **Add this host**. (After that the IP address can be changed if desired.) Press "Apply" after you are finished. | **Known hosts** list of hosts known by this unit. The list can be used to ease configuration by pressing **Add this host**. (After that the IP address can be changed if desired.) Press "Apply" after you are finished. | ||
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| **Normal** If the DHCP client on the LAN doesn't ask for a particular time value, this is the lease time used. | **Normal** If the DHCP client on the LAN doesn't ask for a particular time value, this is the lease time used. | ||
| + | |||
| **Maximum** If the DHCP client on the LAN asks for longer time than this, this is the lease time used. If a shorter time is requested by the client, it is granted. | **Maximum** If the DHCP client on the LAN asks for longer time than this, this is the lease time used. If a shorter time is requested by the client, it is granted. | ||
| - | NOTE: The DHCP client normally starts refreshing the lease after half the agreed lease time. | + | |
| + | :!: The DHCP client normally starts refreshing the lease after half the agreed lease time. | ||
| ==== Add DHCP server options ==== | ==== Add DHCP server options ==== | ||
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| **Option** Number according to [[http://tools.ietf.org/html/rfc2132|RFC2132]], along with identification (the ISC DHCP server standard names). | **Option** Number according to [[http://tools.ietf.org/html/rfc2132|RFC2132]], along with identification (the ISC DHCP server standard names). | ||
| + | |||
| **Data** The data for the option. Typically an IP address in dot notation, a string or a number, depending on the option. Some options (no. 19,20,27,29,30,31,34,36,39) are flags - write "true" or "false" for these. For arrays of values (e.g. "time-servers") use comma as separator. | **Data** The data for the option. Typically an IP address in dot notation, a string or a number, depending on the option. Some options (no. 19,20,27,29,30,31,34,36,39) are flags - write "true" or "false" for these. For arrays of values (e.g. "time-servers") use comma as separator. | ||
| + | |||
| + | **Allow DHCP client to set option 43** Uncheck this box if the automatic option 43 setting by the DHCP client is not wanted (see below, under [[dhcp_server#DHCP Client|DHCP Client]]). | ||
| ==== Vendor class ID (option 60) ==== | ==== Vendor class ID (option 60) ==== | ||
