Hosts   13

  This chapter describes how to configure the PortMaster to recognize hostnames. The configuration settings are stored in the host table in the nonvolatile RAM of the PortMaster 4.

  Each host attached to an IP network has a unique IP address. The PortMaster 4 supports a local host table to map hostnames to IP addresses. Hostnames are for the convenience of the administrator who uses the command line interface, and to record hostnames entered by users at the host prompt. To avoid confusion and reduce administrative overhead, Lucent recommends using the Domain Name System (DNS) or Network Information Service (NIS) for hostname resolution rather than using the local host table.

  For information on setting the NIS or DNS server and domain, refer to Chapter 3, "Global Settings."

       Displaying Host Information

  To display information about hostnames, use the following command:

•  show table host

       Summary of Host Commands

  The commands in Table 13-1 are used to configure the host table.

  Table 13-1 Host Configuration Commands

 

Command Syntax
add host Ipaddress String	- see page 13-2
delete host Ipaddress|String	- see page 13-2
save host	- see page 13-2
show table host	- see page 13-3

  Note ¯ The PortMaster always checks its local host table before using DNS or NIS.

 

       Description of Host Commands

  These commands are used to maintain the PortMaster host table.

       add host

  This command adds a host to the host table.

  add host Ipaddress String

Ipaddress	IP address of the host.
String	String of printable characters representing the hostname. Maximum length is 39 characters.

  Caution ¯ You can add duplicate IP addresses, but hostnames must be unique.

 

Example

  Command> add host 192.168.200.4 chopin
 New host entry successfully added

       delete host

  This command deletes a host from the host table.

  delete host Ipaddress|String

Ipaddress	IP address of the host.
String	Hostname.

  Caution ¯ If you delete a duplicate IP address, the first IP address from the host table will be deleted.

 

Example

  Command> delete host chopin
 Host entry successfully deleted

       save host

  This command writes the current host table to the nonvolatile RAM of the PortMaster.

  save host

 

Usage

  The command can also be entered as save hosts ; save all  can also be used.

 

Example

  Command> save host
 Hosts table successfully saved
New configurations successfully saved.

       show table host

  This command displays the host table from the PortMaster.

  show table host

 

Example

Command> show table host
192.168.200.4	chopin
172.16.200.3	elgar