Intro to Cisco Networking - Modules 11, 12, & 13

Destination Unreachable Code for ICMPv4 (ping)

0 - Network unreachable 1 - Host unreachable 2 - Protocol unreachable 3 - Port unreachable

Destination Unreachable Code for ICMPv6 (ping)

0 - No route to destination 1 - Communication with the destination is administratively prohibited (e.g., firewall) 2 - Beyond scope of the source address 3 - Address unreachable 4 - Port unreachable

Private IPv4 addresses

10.0.0.0 - 10.255.255.255 172.16.0.0 - 172.31.255.255 192.168.0.0 - 192.168.255.255

IPv4 Multicast Addresses

224.0.0.0 - 239.255.255.255

type of IPv4 address: 240.2.6.255

Experimental address

Tunneling

IPv6 packet is transported into an IPv4 packet

Dual-stack

IPv6 packets and IPv4 packets co-exist in the same network

Translation

IPv6 packets are converted into Ipv4 packets and vice-versa

Prefix reserved for communication between devices on the same link

Link-local addresses, FE80::/10

type of IPv4 address: 127.0.0.1

Loop back

type of IPv4 address: 172.19.20.5/12

Private address

ICMPv6

Protocol that supports SLAAC for dynamic assignment, sends messages verifying packet delivery

type of IPv4 address: 169.254.1.5

Reserved address - cannot see network

SLAAC

Stateless Address Auto-configuration: service that provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of IPv6 addresses.

type of IPv4 address: 192.0.2.123

TEST-NET address

Address: FF02::1

Type: all node multicast address. Packets sent to this address will be received by all IPv6 hosts on the local link.

Address: 2001:DB8:BAF:2F57:FE94

Type: global unicast address

Address: ::1

Type: loopback

Address: FF02::1:FFAE:F85f

Type: solicited node multicast

host transmitting a multicast

a specially defined group of hosts

host transmitting a broadcast

all hosts of the same subnet

Type of IPv6 address that refers to any unicast address that is assigned to multiple hosts

anycast

limited broadcast

communicates a message that is limited to the hosts on the local network

Two types of IPv6 unicast addresses

loopback and link-local

directed broadcast

message is sent to all hosts on a specific network

unicast message

message sent from one host to another

multicast message

message sent to a selected group of hosts that are part of a subscribing multicast group

host transmitting a unicast

one specific host