Local link (limited) broadcasts (255.255.255.255) can still be used with 31-bit prefixes. But directed broadcasts are not possible to a 31-bit prefix. This is not really a problem because most routing protocols use multicast, limited broadcasts, or unicasts."
255.255.255.255 is an ipv4 address also termed a broadcast address. It has two purposes primarily which are : 1. A destination ip address 2. A subnet mask As a subnet mask it is represented as a /32 in the CIDR notation. IP/mask Up to the last IP in the subnet Mask Address count Class; a.b.c.d/32 +0.0.0.0: 255.255.255.255: 1: 1 / 256 C: a.b.c.d/31 +0.0.0.1: 255.255.255.254: 2: 1/128 C I did DSL ISP router/SMS work for a year and have never seen a setup like that. That's just bizarre. Not sure what SWBell is doing there. But the IP xx.xx.xx.255 with a subnet of 255.255.255.255 Oct 17, 2019 · The CIDR number comes from the number of ones in the subnet mask when converted to binary. The common subnet mask 255.255.255.0 is 11111111.11111111.11111111.00000000 in binary. This adds up to 24 ones, or /24 (pronounced ‘slash twenty four’). A subnet mask of 255.255.255.192 is 11111111.11111111.11111111.11000000 in binary, or 26 ones 255.255.255.255 and 192.168.1.255 have identical effect if there are no subnets in the network. However, there is a difference when you have broken down your network into subnets. 255.255.255.255 (called as 'Limited-Broadcast') is used by a host to broadcast to all of its immediate neighbors i.e. all those interfaces on the local subnet.
A subnetwork or subnet is a logical subdivision of an IP network.: 1,16 The practice of dividing a network into two or more networks is called subnetting. Computers that belong to a subnet are addressed with an identical most-significant bit-group in their IP addresses.
Oct 17, 2019 · The CIDR number comes from the number of ones in the subnet mask when converted to binary. The common subnet mask 255.255.255.0 is 11111111.11111111.11111111.00000000 in binary. This adds up to 24 ones, or /24 (pronounced ‘slash twenty four’). A subnet mask of 255.255.255.192 is 11111111.11111111.11111111.11000000 in binary, or 26 ones 255.255.255.255 and 192.168.1.255 have identical effect if there are no subnets in the network. However, there is a difference when you have broken down your network into subnets. 255.255.255.255 (called as 'Limited-Broadcast') is used by a host to broadcast to all of its immediate neighbors i.e. all those interfaces on the local subnet. Local link (limited) broadcasts (255.255.255.255) can still be used with 31-bit prefixes. But directed broadcasts are not possible to a 31-bit prefix. This is not really a problem because most routing protocols use multicast, limited broadcasts, or unicasts." 255.255.255.255 = /32 By having a middle reference, it's easier to figure where you are in the range for faster reverse engineering. So basicly, if you know that a /28 is .240, you know that a /29 is .248 etc
Size: 1. Netmask: 255.255.255.255 or /32 Any address. Note: This is a rather small subnet. Size: 2. Netmask: 255.255.255.254 or /31 Starts with even address.
Number of Addresses Number of Bits Prefix Classful Notation Mask; 1: 0 /32: 255.255.255.255: 2: 1 /31: 255.255.255.254: 4: 2 /30: 255.255.255.252: 8: 3 /29: 255.255