Ipv6 Ccie

Front 1

When a dual-protocol host joins a network it sends-

Back 1

ICMPv6 (type 133) Router Solicitation (RS) message to inquire about the local IPv6-capable router on the network. The local router is tuned into the ff02::2 (all-router’s multicast group address) and will receive the RS message.

Front 2

In response to the RS, the router immediately sends

Back 2

ICMPv6 (type 134) Routing Advertisement (RA) message to the all nodes on the network (ff02::1, the all nodes multicast group address).

Front 3

RA - A flag

Back 3

Autonomous Address Autoconfiguration Flag tells the node it should perform stateless address assignment

Front 4

RA - L flag

Back 4

On-Link Flag tells the node that the prefix listed in the RA is the local IPv6 addressM-bit – Managed Address Config Flag tells the host if it should use stateful DHCPv6 to acquire its address and other DHCPv6 options

Front 5

RA - O flag

Back 5

Other Config Flag tells the host that there is other information the router can provide

Front 6

Use these commands to suppress router advertisements:

Back 6

interface GigabitEthernet 0/12

ipv6 address 2001:db8:1234:5678::1/64

ipv6 nd prefix no-autoconfig

ipv6 nd suppress-ra

Router Advertisement (RA) ipv6 nd ra suppress all

Front 7

Router Advertisement (RA) 134

Back 7

RA messages are always originated by routers. RA messages are used to indicate the presence of the Router on a link. RA message carry link-specific parameters which the hosts on the link should use for their network parameters configuration. RA messages are sent periodically on a link and also sent in response to a Router Solicitation message from a host.

Front 8

Router Solicitation (RS) 133

Back 8

RS messages are originated only by the hosts. RS messages are originated by hosts to find the Routers on the link. Routers respond to RS message by sending an RA.

Front 9

Neighbor Solicitation (NS) 135

Back 9

NS messages are originated by the nodes. NS messages are originated by nodes to request the link layer address of another node. NS messages are also used for duplicate address detection and neighbor unreachability detection.

Front 10

Neighbor Advertisements (NA) 136

Back 10

NA messages are almost always sent in response to an NS message from a node. NA messages can be sent by a node when its link-layer address is changed. This NA message is sent as an unsolicited NA to advertise its new address.

Front 11

Redirect 137

Back 11

Redirect messages are used in the same way as IPv4 ICMP redirect messages. Redirect messages are always sent by the router to a host asking the host to update its routing information. Upon receiving a packet from a host, The router can sen Redirect message back to the host only when a router knows that the best path for that host to reach the destination is another router and not itself. On receiving the Redirect message the host can update its routing information, and send subsequent packets directly to the other router.

Front 12

Define Global Unicast Address

Back 12

-Routable on the internet

-Begins with 2000::/3 prefix block

Front 13

Unicast Local Addressing (similar to ipv4 private addresses)

Back 13

fc00::/7

Front 14

Link Local Addressing

Back 14

fe80::/10

Front 15

Disable Duplicate Address Detection

Back 15

ipv6 address ipv6-address/prefix-length anycast

Front 16

Multicast Address Block

Back 16

FFoo::/8

Front 17

IPv$ Mapped Address

Back 17

::ffff:0:0:/96

Front 18

Teredo Tunneling

Back 18

2001::/32

Front 19

IETF Protocol Assignments

Back 19

2001::/23

Front 20

Orchid

Back 20

2001:10::/28

Front 21

6to4

Back 21

2002::/16

Front 22

Unique Local Unicast

Back 22

fc00::/7