IP
address space management allows administrators to manage, track, audit, and
report on an organization’s IPv4 and IPv6 address spaces. The IPAM IP address
space console provides administrators with IP address utilization statistics
and historical trend data so that they can make informed planning decisions for
dynamic, static, and virtual address spaces. IPAM periodic tasks discover the
address space and utilization data automatically, as configured on the DHCP
servers that are managed in IPAM. You can also import IP address information
from comma separated values (.csv) files.
IPAM
also enables administrators to detect overlapping IP address ranges that are
defined on different DHCP servers, find free IP addresses within a range,
create DHCP reservations, and create DNS records.
IPAM
provides a number of ways to filter the view of the IP address space. You can
customize how you view and manage the IP address space by using any of the
following views:
• IP address blocks, which contain:
o IP address subnets
o IP address ranges
o IP addresses
• IP address inventory
•
IP address range groups
Address Blocks
IP address blocks are the
highest-level entities within an IP address space organization. Conceptually,
an IP block is either one of the private IP address spaces or a public IP
address space as assigned to an organization by various Regional Internet Registries.
Network administrators use IP address blocks to create and allocate IP address
ranges to DHCP. They can add, import, edit, and delete IP address blocks. IPAM
automatically maps IP address subnets to the appropriate IP address block based
on the boundaries of the range. IPAM utilization statistics and trends are
summarized at the block level.
IP Address Subnets
IP address subnets are the next
hierarchical level of address space entities after IP address blocks. IPAM
summarizes utilization statistics and trends at the IP address subnet level for
the IP address ranges contained within the IP address subnet. Additionally,
subnets can be created as either physical or virtual; if subnets are virtual,
they can be assigned to either a provider or a customer virtual network.
IP Address Ranges
IP address ranges are the next
hierarchical level of IP address space entities after IP address subnets.
Conceptually, an IP address range is an IP subnet, or part of an IP subnet
marked by a start and end IP address. It typically corresponds to a DHCP scope,
or to a static IPv4 or IPv6 address range or address pool that is used to
assign addresses to hosts. An IP address range is uniquely identifiable by the
value of the mandatory Managed by Service and Service Instance options, which
help IPAM manage and maintain overlapping or duplicate IP address ranges from
the same console. You can add or import IP address ranges from within the IPAM
console. Whenever an IP address range is created, it is automatically associated
with an IP address subnet. If a subnet does not exist, one can be automatically
created when the IP address range is created.
IP Addresses
IP addresses are the addresses
that make up the IP address range. IPAM enables end-to-end life cycle
management of IPv4 and IPv6 addresses, including record synchronization with
DHCP and DNS servers. IPAM automatically maps an address to the appropriate
range based on the start and end address of the range. An IP address is
uniquely identifiable by the value of mandatory Managed By Service and Service
Instance options that help IPAM manage and maintain duplicate IP addresses from
the same console. You can add or import IP addresses from within the IPAM
console.
IP Address Inventory
In the IP address inventory
view, you can view a list of all IP addresses in the enterprise along with
their device names and type. IP address inventory is a logical group defined by
the Device Type option within the IP addresses view. These groups allow you to
customize the way your address space displays for managing and tracking IP
usage. You can add or import IP addresses from within the IPAM console. For
example, you could add the IP addresses for printers or routers, assign IP
address the appropriate device type of printer or router, and then view your IP
inventory filtered by the device type that you assigned.
IP Address Range Groups
IPAM enables
you to organize IP address ranges into logical groups. For example, you might
organize IP address ranges geographically or by business division. Logical
groups are defined by selecting the grouping criteria from built-in or
user-defined custom fields
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