What is Ipv4?

25DORIS · #1 (**permalink**) 05-25-11, 01:42

Please let me know that what is IPv4?

WebMaster · #2 (**permalink**) 05-25-11, 01:51

IPv4 is stands for Internet Protocol Version 4. IPv4 is the fourth revision of the IP utilized to to identify devices on a network through an addressing system. The Internet Protocol is designed for utilizing in interconnected systems of packet-switched computer communication networks.

Irene9001 · #3 (**permalink**) 05-25-11, 01:51

Wouldn't it be simpler just to check wikipedia for more information about IPv4?

Quote:

IPv4 - Wikipedia, the free encyclopedia

10NANCY · #4 (**permalink**) 05-25-11, 02:10

Please let me know about What is Ipv6?

77wmaster · #5 (**permalink**) 05-25-11, 02:30

IPv6 is stands for Internet Protocol Version 6. It is also called Internet Protocol next generation and it is the recent version of the IP reviewed in the IETF standards committees to replace the current version of Ipv4.

55debra · #6 (**permalink**) 05-25-11, 02:50

What is The Difference Between IPv6 and IPv4?

77wmaster · #7 (**permalink**) 05-25-11, 03:51

IPv4 :
a. Addresses are 32 bits (4 bytes) in length.
b. Address (A) resource records in DNS to map host names to IPv4 addresses.
c. Pointer (PTR) resource records in the IN-ADDR.ARPA DNS domain to map IPv4 addresses to host names.
d. IPSec is optional and should be supported externally
e. Header does not identify packet flow for QoS handling by routers
f. Both routers and the sending host fragment packets.
g. Header includes a checksum.

IPv6 ::
a. Addresses are 128 bits (16 bytes) in length
b. Address (AAAA) resource records in DNS to map host names to IPv6 addresses.
c.Pointer (PTR) resource records in the IP6.ARPA DNS domain to map IPv6 addresses to host names
d. IPSec support is not optional
e. Header contains Flow Label field, which Identifies packet flow for QoS handling by router.
f. Routers do not support packet fragmentation. Sending host fragments packets
g. Header does not include a checksum.

WebMaster · #8 (**permalink**) 05-25-11, 04:07

Other than the above differences, there are present some more difference. Those are as follows :
IPv4 :
1. Header includes options.
2. ARP uses broadcast ARP request to resolve IP to MAC/Hardware address.
3. Internet Group Management Protocol (IGMP) manages membership in local subnet groups.
4. Broadcast addresses are used to send traffic to all nodes on a subnet.
5. Configured either manually or through DHCP.
6. Must support a 576-byte packet size (possibly fragmented).
IPv6 :
1. Optional data is supported as extension headers.
2. Multicast Neighbor Solicitation messages resolve IP addresses to MAC addresses.
3. Multicast Listener Discovery (MLD) messages manage membership in local subnet groups.
4. IPv6 uses a link-local scope all-nodes multicast address.
5. Does not require manual configuration or DHCP.
6. Must support a 1280-byte packet size (without fragmentation).