Rev.A0
1-Mar-11
26
10
Class C:
IP address range between 192.0.0.0 and 223.255.255.255. Each class C
network has a 24-bit network prefix followed 8-bit host address. There are
2,097,152 (2^21)/24 networks able to be defined with a maximum of 254 (2^8 –2)
hosts per network.
110
Class D and E:
Class D is a class with first 4 MSB (Most significance bit) set to 1-1-1-0 and
is used for IP Multicast. See also RFC 1112. Class E is a class with first 4 MSB set
to 1-1-1-1 and is used for IP broadcast.
According to IANA (Internet Assigned Numbers Authority), there are three
specific IP address blocks reserved and able to be used for extending internal
network. We call it Private IP address and list below:
Class A
10.0.0.0 --- 10.255.255.255
Class B
172.16.0.0 --- 172.31.255.255
Class C
192.168.0.0 --- 192.168.255.255
Please refer to RFC 1597 and RFC 1466 for more information.
Subnet mask:
It means the sub-division of a class-based network or a CIDR block. The
subnet is used to determine how to split an IP address to the network prefix and the
host address in bitwise basis. It is designed to utilize IP address more efficiently and
ease to manage IP network.
For a class B network, 128.1.2.3, it may have a subnet mask 255.255.0.0 in
default, in which the first two bytes is with all 1s. This means more than 60
thousands of nodes in flat IP address will be at the same network. It’s too large to
manage practically. Now if we divide it into smaller network by extending network
prefix from 16 bits to, say 24 bits, that’s using its third byte to subnet this class B
network. Now it has a subnet mask 255.255.255.0, in which each bit of the first
three bytes is 1. It’s now clear that the first two bytes is used to identify the class B
network, the third byte is used to identify the subnet within this class B network and,
of course, the last byte is the host number.
Bit # 01 2 15 16 31
Network address Host address
Bit # 0 1 2 3 23 24 31
Network address Host address
Summary of Contents for SM8T2DPA
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Page 7: ...Rev A0 1 May 11 v Revision History Date Revision 05 01 2010 A0...
Page 90: ...Rev A0 1 Mar 11 88 Fig 3 36 Fig 3 37 Fig 3 38...
Page 91: ...Rev A0 1 May 11 89 Fig 3 39 Fig 3 40 Fig 3 41 Fig 3 42...
Page 104: ...Rev A0 1 Mar 11 102 Fig 3 61 Set up VLAN Tag Priority Mapping...
Page 105: ...Rev A0 1 May 11 103 Fig 3 62 Set up VLAN Tag Priority Mapping Finish...
Page 113: ...Rev A0 1 May 11 111 Fig 3 69 Frame Type Fig 3 70...
Page 114: ...Rev A0 1 Mar 11 112 Fig 3 71 Fig 3 72 Fig 3 73 ARP...
Page 115: ...Rev A0 1 May 11 113 Fig 3 74 ARP Fig 3 75 ARP Fig 3 76 ARP Fig 3 77 ARP...
Page 116: ...Rev A0 1 Mar 11 114 Fig 3 79 ARP Fig 3 80 ARP Fig 3 81 ARP...
Page 117: ...Rev A0 1 May 11 115 Fig 3 82 ARP Fig 3 83 ARP Fig 3 84 ARP Fig 3 85 ARP Fig 3 86 ARP...
Page 118: ...Rev A0 1 Mar 11 116 Fig 3 87 ARP Fig 3 88 IPv4...
Page 119: ...Rev A0 1 May 11 117 Fig 3 89 IPv4 Fig 3 90 IPv4 Fig 3 91 IPv4 Fig 3 92 IPv4 Fig 3 93 IPv4...
Page 120: ...Rev A0 1 Mar 11 118 Fig 3 94 IPv4 Fig 3 95 IPv4 Fig 3 96 IPv4 Fig 3 97 IPv4 Fig 3 98 IPv4...
Page 121: ...Rev A0 1 May 11 119 Fig 3 99 IPv4 Fig 3 100 IPv4 Fig 3 101 IPv4 Fig 3 102 IPv4...
Page 122: ...Rev A0 1 Mar 11 120 Fig 3 103 IPv4 Fig 3 104 IPv4 Fig 3 105 IPv4...
Page 123: ...Rev A0 1 May 11 121 Fig 3 106 IPv4 Fig 3 107 IPv4 Fig 3 108 IPv4...
Page 124: ...Rev A0 1 Mar 11 122 Fig 3 109 IPv4 Fig 3 110 IPv4 Fig 3 111 IPv4...
Page 125: ...Rev A0 1 May 11 123 Fig 3 112 IPv4 Fig 3 113 IPv4 Fig 3 114 IPv4...
Page 126: ...Rev A0 1 Mar 11 124 Fig 3 115 IPv4 Fig 3 116 IPv4 Fig 3 117 IPv4...
Page 127: ...Rev A0 1 May 11 125 Fig 3 118 Action Fig 3 119 Rate Limiter...
Page 128: ...Rev A0 1 Mar 11 126 Fig 3 120 Port Copy Fig 3 121 DMAC Filter...
Page 129: ...Rev A0 1 May 11 127 Fig 3 122 VLAN ID Filter Fig 3 123 VLAN ID Filter Fig 3 124 Tag Priority...
Page 218: ...Rev A0 1 Mar 11 216 Fig 4 1...
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