Internet Protocol (IP) Flashcards
RFC1918
Used to extend the lifespan of IPV4
Automatic Private IP Addressing (APIPA)
Node self-assigns IP address if no attempts are made to obtain a DHCP lease or if no DHCP lease is available
APIPA address
169.254.0.0
Loopback
A software interface that can be used to emulate a physical interface
Always up and running
Used on routers to identify the router and for diagnostics and testing
Loop address
127.0.0.1
IP Broadcast
Used when destination address is unknown
IP Broadcast address
255.255.255.255
MAC address of an IP broadcast
FF-FF-FF-FF-FF-FF
IP Anycast
Used by IPV6
Used by CDNs and DNS
Local Link Address
Secondary IPv6 address that is specific to the local segment
Self-assigned by the host
Local Link Address starts with…
fe80
Default loopback address on IPv6
::1
Virtual IP (VIP)
A IP address that is shared between two nodes
Client traffic is sent to the virtual IP, nodes then split the traffic between them
Used in load balanced and fault tolerance configurations
Subinterfaces
Local interfaces created on the routers physical interface
Each logical interface is the default gateway for its own subnet and VLAN
IP range of Class A ip
0-127