3Com 11.3 For more information on Internet addresses, subnet masks, Followed by the MAC address

Learning About the User Interfaces 33

Table 6 Internet Address Format

Class	Range of First Address Field	Address Format
A	0–127	nnn.hhh.hhh.hhh*
B	128–191	nnn.nnn.hhh.hhh*
C	192–223	nnn.nnn.nnn.hhh*
D	224–239	yyy.yyy.yyy†

* n represents a digit of the network number; h represents a digit of the host number.

†Class D addresses are used for multicast applications as assigned by the Internet Assigned Numbers Authority (IANA).

	For more information on Internet addresses, subnet masks, and
	variable length subnet masks, see Using Enterprise OS Software.
IPX	Leading zeros can be omitted. Consists of an ampersand (&) followed
	by a network address, which contains eight hexadecimal digits,
	followed by the MAC address.
	You may need to enter an IPX address when using the bridge/router
	for IPX routing. The network address uniquely distinguishes one IPX
	network from all other IPX networks. The following example
	addresses are the same:
	&00003333%080002005678
	&3333%080002005678
OSI	Open System Interconnection (OSI) network addresses are called
	network service access points (NSAPs). NSAPs are of variable length
	and format, although they are always considered to have the
	following three parts:
	■ Area address (variable length)
	■ System ID (six octets)
	■ N-selector (one octet)
	The system ID and N-selector are the last seven octets of the MAC
	address, and the area address is everything but the system ID and
	N-selector. The following is an example of an OSI address:
	/49/0053080002A0089D01
	where the area address is:	/49/0053
	the system ID is:	080002A0089D
	and the N-selector is:	01
	For more information on the OSI addressing scheme, OSI routing
	domains, and area addresses, see Using Enterprise OS Software.
VIP	A VINES Internet Protocol (VIP) address is globally unique, fixed, and
	permanent for servers and routers only. Each node has a two-field,
	48-bit Internet address, which is derived from the 32-bit VINES
	network number and the 16-bit subnetwork number.

The Internet address has eight hexadecimal digits (VIP network ID) and four hexadecimal digits (subnetwork ID) separated by a colon (:). The Internet address (logical network) is independent of any data link layer address assigned to a node on a physical medium. The following is an example of a VIP address:

02A01339:0001