Eion LibraPlus 5845, Руководство пользователя, Страница: 90 / 140

Example 4.58. View static host table
EION: show ip hosts
IP address Host
192.168.0.1 my-static-host.lan
10.0.0.1 second-static-host.lan
4.7. DHCP Server
4.7.1. DHCP Server
Dynamic Host Control Protocol (DHCP) allows to a server automatically assign reusable IP addresses
to DHCP clients.
In LibraPlus the DHCP server database is represented as a set of pools. Each pool has a unique name,
an IP address, a network mask and a type, which can be one of the two: network or host. Pools are
organized as a tree, so that pools with longer network masks are nested in pools with shorter masks if
they share the same network address. For example, the network pool
"p1" = 10.0.0.0/16 is a
parent of the network pool "p2" = 10.0.0.0/24 , and "p2" is a child of "p1" . Network pools
"p3" = 192.168.1.0/24 and "p4" = 192.168.2.0/24 are siblings .
Host pools are always the leaves of the tree. By default, host pools have the mask
255.255.255.255
,
which makes them to be the leaves of the most narrow network pools. A host pool can be placed to
upper parent networks by setting its network mask. For example, if we have two network pools
"pp"
=
192.168.0.0/16
and
"p3"
=
192.168.1.0/24
, the host pool
"h1"
=
192.168.1.101
is a child of
"p3"
and the host pool
"h2"
=
192.168.1.102/16
is
a child of
"pp"
because of the netmask.
The pool tree example (indents and braces indicate nesting):
network
"pp" 192.168.0.0 255.255.0.0
{
network
"p3" 192.168.1.0 255.255.255.0
{
host
"h1" 192.168.1.101 255.255.255.255
}
network
"p4" 192.168.2.0 255.255.255.0
host
"h2" 192.168.1.102 255.255.0.0
}
network
"pp" 10.0.0.0 255.255.0.0
{
network
"p2" 10.0.0.0 255.255.255.0
}
Child pools inherit their parent parameters. Therefore, common parameters, say, the domain name,
should be configured at higher levels of the tree. Inherited parameters can be overridden. For example,
if a parameter is defined in both the parent network and a subnetwork, the definition of the subnetwork
is used for subnetwork hosts.
Pool parameters
:
80
Configuration