Advanced Internetworking: IPv4 Vs IPv6

Question 1

Address size: IPv4 vs IPv6 and what does it solve?

Answer 1

32 bits for IPv4
128 bits for IPv6
Solves the Address Exhaustion Problem

Question 2

Configuration: IPv4 vs IPv6

Answer 2

Manual or DHCP for IPv4
Autoconfiguration for IPv6

Question 3

NAT Requirements : IPv4 vs IPv6

Answer 3

Network Address Translation: all host don’t need a global unique address
Yes for IPv4
No for IPv6

Question 4

Broadcasting: IPv4 vs IPv6

Answer 4

IPv4: Yes, uses broadcasting to reach all nodes on a network
IPv6: No, uses multicast or anycast

Question 5

Security: IPv4 vs IPv6

Answer 5

IPv4: Optional
IPv6: IPsec is mandatory

Question 6

Mobile Routing

Answer 6

Enables a host to maintain ongoing connections while moving between networks if IP address changes due to location

Question 7

Steps of Mobile Routing

Answer 7

1. Registration: Mobile Node moves to Foreign network, gets Care of Address, then that is registered with Home Agent
2. Tunneling: Packets sent to Mobile Node are intercepted by Home Agent, forwarded to Care of Address
3. Decapsulation: Foreign agent gets packet, removes header, then delivers to Mobile Node
4. Reverse Path: Mobile Node sends packets to corresponding node