34.1.1 Addressing

(1) IP address

The Switch supports Class A, B, C, and D IP addresses. The following figure shows the format of an IP address.

Figure 34-1 IP address format

Note that in a network broadcast address or subnetwork broadcast address, the host ID is binary and consists of all 0s or all 1s. You can select which type of host ID you want to use in the configuration for each interface. For details about the interfaces, see (3) IP addressing units.

The IP addresses in the following ranges can be assigned to the Switch:

• Network IDs

  The following network IDs are allowed:

  • Class A:1.x.x.x~126.x.x.x

  • Class B:128.1.x.x~191.254.x.x

  • Class C:192.0.1.x~223.255.254.x (x=host ID)

• Host IDs

  The following host IDs are allowed:

  • Class A:y.0.0.1~y.255.255.254

  • Class B:y.y.0.1~y.y.255.254

  • Class C:y.y.y.1~y.y.y.254 (y=net ID)

(2) Subnet Mask

You can use the subnet mask to specify net ID and host ID boundary positions at any boundary position, regardless of the boundary position of net ID,host ID of Class A,B,C shown in "Figure 34-1 IP Address Formats".

Specify a subnet mask in the configuration for each interface in left-adjusted format (specify consecutive 1s from the most significant digit in binary notation).

For example, you can specify 255.255.192.0 as a subnet mask, but you cannot specify 255.255.96.0 as a subnet mask.

(3) IP addressing units

The Switch sets IP for VLAN or loopback interface. Multihomed connections, in which multiple IP addresses are assigned to a single VLAN, are also available. The switch broadcasts packets to all nodes in a network.