D-Link DES-3326S manual Class a Subnet Masks

DES-3326S Layer 3 Fast Ethernet Switch User’s Guide

		# of		Subnet Mask	CID	# of		# of		Total Hosts
		Bits			R	Subnets		Hosts
					Nota
					tion
		2		255.192.0.0	/10	2		419430		8388604
								2
		3		255.224.0.0	/11	6		209715		12582900
								0
		4		255.240.0.0	/12	14		104857		14680036
								4
		5		255.248.0.0	/13	30		524286		15728580
		6		255.252.0.0	/14	62		262142		16252804
		7		255.254.0.0	/15	126		131070		16514820
		8		255.255.0.0	/16	254		65534		16645636
		9		255.255.128.0	/17	510		32766		16710660
		10		255.255.192.0	/18	1022		16382		16742404
		11		255.255.224.0	/19	2046		8190		16756740
		12		255.255.240.0	/20	4094		4094		16760836
		13		255.255.248.0	/21	8190		2046		16756740
		14		255.255.252.0	/22	16382		1022		16742404
		15		255.255.254.0	/23	32766		510		16710660
		16		255.255.255.0	/24	65534		254		16645636
		17		255.255.255.1	/25	131070		126		16514820
				28
		18		255.255.255.1	/26	262142		62		16252804
				92
		19		255.255.255.2	/27	525286		30		15728580
				24
		20		255.255.255.2	/28	104857		14		14680036
				40		4
		21		255.255.255.2	/29	209715		6		12582900
				48		0
		22		255.255.255.2	/30	419430		2		8388604
				52		2
				Table 5-9. Class A Subnet Masks
		# of	Subnet Mask		CIDR		# of		# of		Total
		Bits			Notation		Subnets		Hosts		Hosts
	2		255.255.192		/18		2		16382		32764
	3		255.255.224.0		/19		6		8190		49140
	4		255.255.240.0		/20		14		4094		57316
	5		255.255.248.0		/21		30		2046		61380
	6		255.255.252.0		/22		62		1022		63364
	7		255.255.254.0		/23		126		510		64260
Switch Management and Operating Concepts										87