IP

Ipblock

Dim stores information about the IP address space in a tree structure. An individual node from this tree is called Ipblock (or simply block) and it represents a CIDR-like block of IP addresses (ex: 10.0.0.0/8). The children Ipblocks represent a subset of the parent address space.

Each block can have a status value associated. The most interesting status values are:

• Container: a generic status for blocks larger than subnets

• Subnet: a subnet (can only have Delegation, Static, Reserved or Available children)

• Delegation: the block is used for a specific purpose (ex: a server)

• Static: a single allocated IP address

• Available: a single free IP address

• Reserved: a reserved single IP address (for example the IPv4 network and broadcast addresses in a Subnet)

Example IPv6 tree:

digraph ipblock_tree_example { graph [rankdir=TB]; node [fontsize=10 shape=box]; C1 [label="2001:8d8::/32\nContainer\nUI RIPE Space"]; C2 [label="2001:8d8:fe::/47\nContainer\nRIPE Global Anycast"]; S [label="2001:8d8:fe:53::/64\nSubnet\nGlobal DNS Anycast"]; D1 [label="2001:8d8:fe:53:0:d9a0:5000::/104\nDelegation\nnspa-de"]; Static1 [label="2001:8d8:fe:53:0:d9a0:50c7:100/128\nStatic\a.de"]; D2 [label="2001:8d8:fe:53:0:d9a0:5200::/104\nDelegation\nnspa-com"]; Static2 [label="2001:8d8:fe:53:0:d9a0:52c7:100/128\nStatic\a.com"]; C1 -> C2; C2 -> S; S -> D1; D1 -> Static1; S -> D2; D2 -> Static2; }

Pool

A pool is a collection of Subnet blocks. All subnets must be in the same VLAN.

Custom Attribute

It is possible to attach custom attributes to pool and Ipblock objects. Both the attribute name and value are free-form strings. The only restriction is that the attribute name must not be reserved (for example, name and vlan are reserved names for pools).