Deploying Suse Linux Enterprise Server
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Configuring DNS and DHCP
DHCP Parameters Reference
When fine-tuning your DHCP Server, you may have to add additional parameters to the server in order to get it to function properly, or provide the correct information to your clients. Here is a list of the parameters available and a quick description of what they do. Most of these parameters allow you to provide more information about your network to your clients, while some allow you to modify the behaviour of the DHCP Server. The Yast DHCP Server module does a very good job of showing what parameters are available to adjust depending upon what you are editing (i.e. What type of descriptor you are adjusting).
For more information on the DHCP Server, visit it's website at http://www.isc.org/index.pl?/sw/dhcp/.
| "allow" | "Controls the response of the DHCP server to various sorts of requests. This can be used to allow certain instances, such as bootp, client updates, etc. For more information check the dhcp.conf man page." |
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| "authoritative" | "When set, tells your clients that the configuration information about the given network segment is known to be correct and is authoritative." |
| "ddns-update-style" | "When using Dynamic DNS, you must set this to be either ad-hoc or interim, depending upon how you setup DDNS. Set to none if not using DDNS." |
| "ddns-updates" | "Controls whether or not the server will attempt to do a DNS update when a lease is confirmed. Set this to off if you do not want the server to attempt to do updates within a certain declaration. |
| "default-lease-time" | "The time in seconds that will be assigned to a lease, unless the client specifically asks for a certain expiration time." |
| "deny" | "Controls the response of the DHCP server to various sorts of requests. This can be used to allow certain instances, such as bootp, client updates, unknown clients, etc. For more information check the dhcp.conf man page." |
| "filename" | "Allows you to specify the name of the initial boot file which is to be loaded by a client." |
| "log-facility" | "Allows you to specify how the DHCP Server should do it's logging." |
| "max-lease-time" | "The Maximum length in seconds that will be assigned to a lease." |
| "next-server" | "Allows you to specify the host address of the server from which the initial boot file is to be loaded." |
| "option bootfile-name" | "Used to identify a bootstrap file" |
| "option broadcast-address" | "Specifies the broadcast address in use on the client's subnet" |
| "option dhcp-server-identifier" | "Clients use the contents of the 'server identifier' field as the destination address for any DHCP messages unicast to the DHCP server." |
| "option domain-name" | "Specifies the domain name that client should use when resolving hostnames via the Domain Name System." |
| "option domain-name-servers" | "Specifies a list of Domain Name System name servers available to the client" |
| "option font-servers" | "Specifies a list of X Window System Font servers available to the client." |
| "option host-name" | "Specifies the name of the client." |
| "option interface-mtu" | "Specifies the MTU to use on this interface." |
| "option irc-server" | "Specifies a list of IRC servers available to the client." |
| "option log-servers" | "Specifies a list of IRC servers available to the client." |
| "option lpr-servers" | "Specifies a list of line printer servers available to the client." |
| "option netbios-dd-server" | "Specifies a list of RFC 1001/1002 NBDD servers" |
| "option netbios-name-servers" | "Specifies a list of RFC 1001/1002 NBNS name (WINS) servers" |
| "option netbios-node-type" | "The NetBIOS node type option allows NetBIOS over TCP/IP clients which are configurable to be configured as described in RFC 1001/1002. The value is specified as a single octet which identifies the client type." Possible node types are: 1 B-node: Broadcast - no WINS 2 P-node: Peer - WINS only 4 M-node: Mixed - broadcast then WINS 8 H-node: Hybrid - WINS then broadcast |
| "option netbios-scope" | "Specifies the NetBIOS over TCP/IP scope parameter for the client" |
| "option nis-domain" | "Specifies the name of the client's NIS (Network Information Services) domain." |
| "option nis-servers" | "Specifies a list of IP addresses indicating NIS servers available to the client." |
| "option nisplus-domain" | "Specifies the name of the client's NIS+ domain." |
| "option nisplus-servers" | "Specifies a list of IP addresses indicating NIS+ servers available to the client." |
| "option ntp-servers" | "Specifies a list of IP addresses indicating NTP servers available to the client." |
| "option pop-server" | "Specifies a list of POP3 servers available to the client." |
| "option root-path" | "Specifies the path-name that contains the client's root disk." |
| "option routers" | "Specifies a list of IP addresses for routers on the client's subnet." |
| "option smtp-server" | "Specifies a list of SMTP servers available to the client." |
| "option static-routes" | "Specifies a list of static routes that the client should install in its routing cache." |
| "option subnet-mask" | "Specifies the client's subnet mask." |
| "option tftp-server-name" | "Used to identify a TFTP server." |
| "option time-servers" | "Specifies a list of time servers available to the client" |
| "option vendor-class-identifier" | "Used by some DHCP clients to identify the vendor type and possibly the configuration of a DHCP client." |
| "option vendor-encapsulated-options" | "Contain either a single vendor-specific value or vendor-specific suboptions" |
| "option x-display-managers" | "Specifies a list of systems that are running the X Window System Display Manager and are available to the client" |
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