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Protocol Number Keyword Protocol References/RFC; 0x00 0 HOPOPT IPv6 Hop-by-Hop Option: RFC 8200: 0x01 1 ICMP Internet Control Message Protocol: RFC 792: 0x02 2 IGMP Internet Group Management Protocol: RFC 1112: 0x03 3 GGP Gateway-to-Gateway Protocol: RFC 823: 0x04 4 IP-in-IP IP in IP (encapsulation) RFC 2003: 0x05 5 ST Internet Stream Protocol ...
English: A Table of CIDR prefixes for IPv6, it shows the number of corresponding equivalent subnets for each prefix, as well as the number of the interface identifier bits. Date 1 March 2020
192.168.20.16/28 192.168.0.0/16 When the address 192.168.20.19 needs to be looked up, both entries in the forwarding table "match". That is, both entries contain the looked up address. In this case, the longest prefix of the candidate routes is 192.168.20.16/28, since its subnet mask (/28) is longer than the other entry's mask (/16), making the ...
CIDR notation is a compact representation of an IP address and its associated network mask. The notation was invented by Phil Karn in the 1980s. [9] [10] CIDR notation specifies an IP address, a slash ('/') character, and a decimal number. The decimal number is the count of consecutive leading 1-bits (from left to right) in the network mask ...
1 40 16 64 field prefix: L: ... where a numeric zone index is encoded in the second 16-bit word of the address. E.g.: ... (CIDR) First address Last address Number of ...
First version of IANA table with historical notes via the Internet Archive Wayback Machine. "Internet Protocol v4 Address Space". Internet Assigned Numbers Authority (IANA). September 2007. Archived from the original on 28 October 2007 Last version of IANA table with historical notes via the Internet Archive Wayback Machine.
Toggle the table of contents. ... 172.16.0.0/12 172.16.0.0–172.31.255.255 1 048 576: ... (CIDR) First address Last address Number of addresses Usage
RFC 1918 name IP address range Number of addresses Largest CIDR block (subnet mask) Host ID size Mask bits Classful description [Note 1]; 24-bit block: 10.0.0.0 – 10.255.255.255: 16 777 216