D-Link DES-3828 Product Manual - Page 173

xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch CLI Manual 22 BASIC IP COMMANDS (FOR LAYER 3) IP Multinetting is a function that allows multiple IP interfaces to be assigned to the same VLAN. This is beneficial to the administrator when the number of IPs on the original interface is insufficient and the network administrator wishes not to resize the interface. IP Multinetting is capable of assigning another IP interface on the same VLAN without affecting the original stations or settings of the original interface. Two types of interfaces are configured for IP multinetting, primary and secondary, and every IP interface must be classified as one of these. A primary interface refers to the first interface created on a VLAN, with no exceptions. All other interfaces created will be regarded as secondary only, and can only be created once a primary interface has been configured. There may be five interfaces per VLAN (one primary, and up to four secondary) and they are, in most cases, independent of each other. Primary interfaces cannot be deleted if the VLAN contains a secondary interface. Once the user creates multiple interfaces for a specified VLAN (primary and secondary), that set IP interface cannot be changed to another VLAN. IP Multinetting is a valuable tool for network administrators requiring a multitude of IP addresses, but configuring the Switch for IP multinetting may cause troubleshooting and bandwidth problems, and should not be used as a long term solution. Problems may include: The Switch may use extra resources to process packets for multiple IP interfaces. The amount of broadcast data, such as RIP update packets and PIM hello packets, will be increased The IP interface commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the following table. Each command is listed, in detail, in the following sections. Command create ipif config ipif enable ipif disable ipif delete ipif show ipif Parameters {secondary | state [enable | disable] | proxy_arp [enable | disable]} [{ipaddress | vlan | state [enable | disable]} | proxy_arp [enable | disable]} | bootp | dhcp] { | all} { | all} { | all} {} Each command is listed, in detail, in the following sections. create ipif Purpose Syntax Description Parameters Used to create an IP interface on the Switch. create ipif {secondary | {state [enable | disable] | proxy_arp [enable | disable]} This command will create an IP interface. − The name for the IP interface to be created. The user may enter an alphanumeric string of up to 12 characters to define the IP interface. − IP address and netmask of the IP interface to be created. The address and mask information can be specified using the traditional format (for example, 10.1.2.3/255.0.0.0) or in CIDR format, (10.1.2.3/8). (This parameter may also appear as ). − The name of the VLAN that will be associated with the above IP interface. secondary - Enter this parameter if this configured IP interface is to be a secondary IP interface of the VLAN previously specified. secondary 169