IPv6 Addressing Flashcards

(31 cards)

1
Q

Link Local Address (private or public)

A

private IPv6 Address

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2
Q

Link Global (private or public)

A

public IPv6 Address

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3
Q

Name for TTL in IPv6

A

Hop Limit

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4
Q

Localhost IPv6 (127.0.0.1)

A

::1

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5
Q

IPv4 fields which got removed in IPv6

A
  • Flag
  • Fragment Offset
  • Header Checksum
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6
Q

Improvements of IPv6

A
  • increased Address Space
  • eliminates need for NAT
  • improved packet handling (simplified Header with fewer fields)
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7
Q

What does the elimination of need for NAT mean in IPv6?

A

Can be a Security risk, due to every device is directly “accessible”

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8
Q

ARP for IPv6

A

Neighbour Discovery

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9
Q

Is IPv6 case-sensitive?

A

No

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10
Q

IPv4 –> Oktett
IPv6 –> ?

A

hextet

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11
Q

Wie lange ist die Subnetzmaske in IPv6?

A

/64

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12
Q

Aus was besteht die Subnetzmaske?

A

*Global Prefix (48 bit)
*Subnet ID (16 bit)

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13
Q

Kann die Subnetzmaske angepasst werden?

A

Theoretisch ja, kann jedoch zu Problemen mit SLAAC führen.

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14
Q

Start von Link-Local Adresse

A

fe80:

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15
Q

Start von Global Unicast Adresse

A

*2000
*3000

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16
Q

Welche Arten von Adressen werden nicht gerouted?

A

*Link-Local
*Unique Local

17
Q

IPv6 Broadcast?

A

Gibt es keinen. Multicast Groups

18
Q

Multicast Groups und deren Adresse

A

*All-Routers (ff02::2)
*All-Nodes (ff02::1)

19
Q

IPv6 Vereinfachungsregeln

A

*0 ganz links können weggelassen werden
*einmal darf ein Hextett bestehend aus 0000 mit :: zusammengfasst werden

20
Q

IPv6 Kategorien von Adressen

A

*Unicast
*Multicast
*Anycast

21
Q

Was ist Anycast?

A

*IPv6 unicast address assigned to multiple devices
*routed to the nearest device having that address

22
Q

Standardmässig sieht IPv6 platz für wie viele Subnets vor?

A

2^16 –> 65k Subnets

23
Q

Mit was kann überprüft werden, dass niemand die gleiche IP hat?

A

DAD (Duplicate Address Detection) –> Neighbour Discovery

24
Q

Was wird immer durch den Router bekanntgegeben?

A

der Default Gateway

25
IPv6 Discovery Arten
*Alle 200 sekunden schickt Router RA (Router Advertisement) *RS (Router Solicitation) Anfrage und RA (Router Advertisement) Antwort
26
Tools zur Migration von IPv4 zu IPv6
*Dual stack (IPv4 and IPv6 addresses) *Tunneling (IPv6 packet encapsulated in IPv4 packet) *Translation (NAT64 translation technique similar to NAT)
27
Was braucht es um eine Global Unicast Adresse zu setzen?
eine Link-Local Addresse
28
IPv6 Zuweisungsarten
*manuell *DHCPv6 Server *SLAAC
29
Welche Arten von RA Messages gibt es?
*Stateful DHCPv6 *SLAAC *SLAAC with stateless DHCPv6 Server
30
SLAAC Varianten zur IPv6 Generierung
*Random Number und anschliessend ND *EUI64 (MAC in hälfte teilen und FFFE einfügen, sowie 7. Bit invertieren)
31
Was beinhaltet Router Advertisement?
*Network prefix *prefix length *default gateway optional: *DNS adresse *domain name