5 ICS132-IPv6

5 ICS132-IPv6 - IPv6 IPv6 What it Is Revision of IPv4...

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IPv6
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IPv6: What it Is z Revision of IPv4 z 128-bit Addresses z Revised Addressing Architecture z Removal of redundant features ± Fragmentation ± Broadcast
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IPv6: Why it is important z The Internet is growing too fast z Routing tables are filling up quickly ± May have serious shortages by 2005 z New technology requires new features ± Mobility, security, multicast z Redone from scratch: a cleaner architecture
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z Need room to grow ± 128-bit addresses (16 bytes) ± Allows up to 340,282,366,920,938,463,463,374,607,431,768,211,456 unique addresses – 3,911,873,538,269,506,102 addresses for each m2 (meter x meter) of the surface of the planet Earth
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IPv6- Addressing Architecture z Three types of address: ± Unicast ± Anycast ± Multicast – No Broadcast Addresses- Superseded by Multicast functionality z A prefix determines the type of address ± The prefix is X bits, depending on the type – Link Local Prefix = 1111 1110 10 – Global Unicast Prefix = 001 – Multicast Address = 1111 1111
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IPv6 Details- Header Version Traffic Class Flow Label Payload Length Next Header Hop Limit Source Address Destination Address 0 71 5 31 23
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5 ICS132-IPv6 - IPv6 IPv6 What it Is Revision of IPv4...

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