Supermicro Intelligent Switch, Руководство пользователя

Страница: 452 / 913

Release :
1.0
452 / 913
18 IP
IP (Internet Protocol) is an identifier for a computer or device on a TCP/IP network. Networks using the
TCP/IP protocol route messages based on the IP address of the destination. The format of an IP address
is a 32-bit numeric address written as four numbers separated by periods. Each number can be zero to
255. Example: 10.5.25.180.
Every computer that communicates over the Internet is assigned an IP address that uniquely identifies
the device and distinguishes it from other computers on the Internet. Within an isolated network, IP
addresses can be assigned at random as long as each one is unique. However, to connect a private
network to the Internet, the registered IP addresses must be used (called Internet addresses) to avoid
duplicates. The four numbers in an IP address are used in different ways to identify a particular network
and a host on that network.
Four regional Internet registries -- ARIN, RIPE NCC, LACNIC and APNIC -- assign Internet addresses
from the following three classes.
Class A - supports 16 million hosts on each of 126 networks
Class B - supports 65,000 hosts on each of 16,000 networks
Class C - supports 254 hosts on each of 2 million networks
The number of unassigned Internet addresses is running out, so a new classless scheme called CIDR
(Classless Inter-Domain Routing) is gradually replacing the system based on classes A, B, and C and is
tied to adoption of IPv6.
The list of CLI commands for the configuration of IP is as follows:
ping
ip route
ip routing
ip default-ttl
arp timeout
arp – ip address
ip arp max-retries
show ip traffic
show ip route
show ip arp