The AddressPool clause allows you to define which address
pools are available. When Radiator is started, each AddressPool ensures
there is an entry for each of its addresses and prefixes in the RADPOOL
table.
AddressPool is a simple alternative for maintaining the
contents of the RADPOOL table through other method. You can use another
method for initialising and maintaining the RADPOOL table, in this case it
is not necessary to have any AddressPool clauses.
AddressPool
defines a range of available addresses or prefixes. Each address or prefix
in the range has the same Subnet mask and DNS Server address. The
Subnetmask and the DNS server address specify the values to use if an
address or prefix is allocated from a range. The default for Subnetmask is
255.255.255.255. There is no default for DNSServer.
IPv4 address
ranges can be specified either as lower and upper addresses (inclusive)
within a class C block or as a CIDR block. IPv6 prefix ranges are
specified as a CIDR block.
The step size between consecutive
addresses is controlled with the Step parameter, which defaults to 1. Step
of other than 1 can be useful where you need to allocate subnets of more
than one address, rather than individual host addresses.
Advanced
configuration for address pools is supported with optional parameters
PoolGroup and Priority. A PoolGroup defines a name to group multiple pools
with different priorities set by Priority. These parameters are available
for AddAddressQuery (for more information, see
Section 3.114.6. AllocateQuery)
and the values inserted in SQL can later be used by customised allocation
queries and procedures.
The following example defines two pools of
addresses. The first pool is called 'pool1'. It contains addresses in the
ranges 192.1.1.1 to 192.1.1.50 (inclusive) and 192.1.1.60 to 192.1.1.120
(inclusive) and the entire 192.1.2.0 class C block. The IP Subnet mask for
each address is 255.255.255.255. The second pool is called ‘pool2’ and
contains addresses in the range 192.2.2.62 to 192.2.2.99 (inclusive). The
third pool is called 'pool3' and contains 256 IPv6 prefixes with prefix
length of 64 bits.
<AddressAllocator SQL>
.....
# Defines the addresses that we are prepared
# to allocate:
<AddressPool pool1>
Subnetmask 255.255.255.0
DNSServer 10.1.1.1
Range 192.1.1.1 192.1.1.50
Range 192.1.1.60 192.1.1.120
Range 192.1.2.0/24
</AddressPool>
<AddressPool pool2>
Subnetmask 255.255.255.127
Range 192.2.2.62 192.2.2.99
</AddressPool>
<AddressPool pool3>
Subnetmask /56
Range 2001:db8:100::/48
#PoolGroup group1
#PoolPriority 1
NasIdentifier 2001:db8:2::2
</AddressPool>
</AddressAllocator>
