ICND1 Section 7 - IPv6 Flashcards Preview

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Flashcards in ICND1 Section 7 - IPv6 Deck (76)
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1

What does EUI stand for?

Extended Unique Identifier

2

What is the / range for IPv6 unique local address space?

FC00::/7

3

What do IPv6 link-local addresses start with?

FE80

4

What is the prefix range for link-local addresses?

FE80::/10
FE8
FE9
FEA
FEB

5

What method is used to create the link-local address for an interface?

FE80::/64 + EUI-64 interface ID

6

What do IPv6 multicast addressess start with?

FF

7

What is the IPv6 multicast range?

FF00::/8

8

What IPv6 multicast range is reserved for link local only?

FF02::/16

9

What organization hands out IP's globally?

IANA

10

When a host wants to use DHCPv6 to get an IP, what source/destination addresses does it use?

Source = it's link-local address
Destination = FF02::1:2

11

What does SLAAC stand for?

StateLess Address AutoConfiguration

12

Command to set an IPv6 dhcp relay on an interface

conf t
int gi0/0
ipv6 dhcp relay destination -DHCP server addr-

13

Command to configure a router-id for an OSPFv3 router

conf t
ipv6 router ospf
router-id

14

What is the all-EIGRP routers IPv6 address?

FF02::10

15

What are 2 uses for link-local addresses?

Communication with directly connected neighbors
Routers use their neighbors link-local addresses as next hops in routing tables

16

Syntax to enable OSPFv3 on a router

conf t
ipv6 router ospf

17

3 steps for a host to get an IPv6 address using SLAAC

1. Discover the v6 prefix on the link using NDP RS/RA messages.
2. Create an interface ID and append it to the prefix.
3. Test that it's not a duplicate using DAD.

18

What address is an RS message sent to?

All-routers
FF02::2

19

Command to passive an OSPFv3 interface

conf t
ipv6 router ospf
passive-interface

20

When using SLAAC, how does a host come up with it's interface ID?

Either using EUI-64 or coming up with a random value.

21

What is the all-host IPv6 address?

FF02::1

22

What 5 IPv6 functions use NDP?

SLAAC
DAD
Router Discovery
Neighbor MAC Discovery
Prefix/length Discovery

23

What is the all-DHCP-agents multicast address?

FF02::1:2

24

What is the all-router IPv6 address?

FF02::2

25

What is the all-OSPF IPv6 address?

FF02::5

26

What is the all-DR IPv6 address?

FF02::6

27

Where would a host using SLAAC get the DNS server address?

From stateless DHCPv6

28

4 major types of IPv6 addresses

Global Unicast
Unique local
Multicast
Link-local

29

How does DAD work?

Host sends a NS message for it's IPv6 address. If someone answers, must be a duplicate.

30

Who primarily sends an RS message?

Hosts