Routing an IPv6

Question 1

Define routing

Answer 1

routing is the process of selecting he best path to a destination

Question 2

What does a routing table do

Answer 2

Routing table maps network addresses to optimal paths
Type Network Port
C 10.0.0.0/8 F0/0
C 172.16.0.0/16. F0/1

the c means directly connected and the port means the exit interface

Question 3

What is static routing

Answer 3

Commonly used when routing from a network to a stub network.

Question 4

Define a stub network

Answer 4

A stub network is a network accessed by a single route.

Question 5

Is IPv4 exhausted

Answer 5

yes

232 = 4, 294, 967, 296
* ARIN’s free pool of IPv4 address space was depleted in September 2015
* RIPE NCC announced running out of IPv4 addresses in November 2019
* LACNIC have their last available IPv4 address block reserved in August 2020

Question 6

How have we fixed IPv4

Answer 6

we made IPv6 with a much larger address space

Question 7

What is the address space for IPv6

Answer 7

2^128

Question 8

How’s the header changed from IPv4 to IPv6

Answer 8

become much more simple

Field names kept from IPv4 to IPv6
Fields not kept in IPv6 (Identification, IGL , Flags, Fragment Offset, Header Checksum, Options, Padding)
Name and Position changed in IPv6
New field in IPv6 (flow label)

Question 9

IPv6 Address Abbreviation

Answer 9

Discard leading zeros
Double colon for consecutive zeros