lec12 - CprE 530 Lecture 12 Topics IPv6 Overview Packet...

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CprE 530 Lecture 12 Topics IPv6 – Overview – Packet Format – ICMP V6
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Reasons for IPv6 IPv4 uses 32 bits for addresses Real time/streaming traffic (voice, audio) Security issues with IPv4 IPv6 – Larger Address Space Header format – separates state information from dynamic routing info to simplify router actions New Options • New Options Quality of Service Added Security
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IPv6 Address Space 128 bits (16 bytes) 4 hex digits: xx:xx:xx:xx:xx:xx:xx:xx Can abbreviate by removing leading zeros – :0F: :F: – xx:0:0:0:AD64:0:0:xx xx::AD64:0:0:xx CIDR Rules also supported (/ nbr of bits) IPv6 Address Types Address types: – Unicast: A B – Anycast: same first part; subnet broadcast – Multicas – Multicast IPv6 Address Format: Address Type Prefix
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IPv6 Address Format Common Type Prefixes – 010 = Provider based Unicast – 100 = Geographic Unicast – 1111 1110 10 = Link Local – 1111 1110 11 = Site Local – 1111 1111 = Multicast – 0000 010 = IPX – 0000 001 = NSAP
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This note was uploaded on 12/08/2011 for the course CPRE 530 taught by Professor Jacobson during the Fall '10 term at Iowa State.

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lec12 - CprE 530 Lecture 12 Topics IPv6 Overview Packet...

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