Updated 11/17/04
The
CalREN networks (CalREN) are owned and operated by CENIC, the Corporation for
Education Network Initiatives in California. The purpose of CalREN is to
engineer, maintain and operate telecommunication facilities for the primary
benefit of CENIC Associates. The network provides CENIC Associates with
high-performance inter-campus networking resources to support educational,
research, and institutional objectives.
The
purpose of this document is to describe the Internet Protocol version 4 address
assignment policies that CENIC uses to determine IPv4 address allocation to
CENIC CalREN associates.
This
document applies to all users of CalREN networks services that request assignment
or allocation of IP v4 addresses from CENIC. The policies set forth in this
document are based on ARIN guidelines and RFC 2050. This document clarifies IPv4 address distribution policies
for CENIC and is meant to act as a base set of rules and guidelines. The unique requirements of CalREN may
dictate that additional IP address distribution policies that are more
stringent than ARIN guidelines may be required when appropriate.
This policy does not
replace ARIN or RFC 2050 guidelines, and any rules not specifically included in
this policy default to ARIN guidelines.
This policy is subject to change and the latest version will be posted
at: http://www.cenic.net/operations/policies
Portions of this
document quote RFC 2050 or ARIN guidelines.
Address allocations for
CalREN/XD applications are beyond the scope of this document and are reviewed
on a case-by-case basis.
Because the number of available IP addresses on the Internet is limited, the utilization rate of address space will be a key factor in network number assignment. Therefore, in the best interest of the Internet as a whole, specific guidelines have been created to govern the assignment of addresses based on utilization rates. This policy encourages fair distribution of globally unique Internet address space according to operational needs of CENIC and our associates. Maintaining proper documentation and efficient utilization of address space provides CENIC with ability to continue to distribute IP address space to our associates. IP address space is allocated using a slow-start model. Allocations are based on justified need, not solely on a predicted customer base.
All
requests for initial IP address assignment must include a completed form from http://www.cenic.net/operations/policies/ip_addr_request.txt
emailed to the CENIC NOC at noc@cenic.org .
Although
topological issues may make exceptions necessary, the basic criteria that
should be met to receive network numbers are listed below:
The utilization rate above
is to be used as a guideline. There may be occasions when the 1-year rate does
not fall exactly in this range.
Organizations must exhibit a high confidence level in its 1-year
utilization rate and supply documentation to justify the level of confidence. A prefix as long as a /26 may be issued
if deemed appropriate.
CalREN
connected associates that are currently using IP addresses provided by another
ISP and requesting an initial allocation of IP addresses are allocated
addresses based on the following two categories:
CENIC
will assign IP addresses based on current justification CENIC guidelines.
Previous ISP allocations do not automatically justify new initial allocations
of the same size.
This
will follow the same guidelines as a Request
For Additional Address Space
Requests for large IP
address allocations require additional review. For initial IP address requests
that exceed /23 in size, the following supporting documentation may be
required.
/22 and larger:
Requests
for IP address requests of /22 and larger require additional review by CENIC
engineering. The following supporting information in addition to the request
template will expedite processing of the request.
/19 and larger:
Requests for IP address
allocations of /19 or larger may require additional approval by ARIN before
assignment. The request template
must be submitted with the following additional information.
1)
Network
engineering plans, including subnets, host counts, and hosts per subnet, with
projected utilization rates and associated confidence levels of those
projections for one and two years
2)
Deployment
schedule for the network, including major milestones for each subnet
3)
Network topology
diagrams
All
requests for additional IP address assignment must include a completed form from http://www.cenic.net/operations/policies/ip_addr_request.txt emailed to the CENIC NOC at noc@cenic.org .
The
determination of additional IP address allocations is based upon current
utilization and justification for additional address space. CENIC associates must have
efficiently utilized all previous allocations, and at least 85% of their most
recent allocation in order to receive additional space.. Allocations should
show a 25% immediate utilization with 50% utilized within 1 year.
Documentation
requirements for additional address space are the same as for Requests for Initial IP Address Space
While processing a
request for IP addresses, CENIC or ARIN may request additional supporting
documentation. To expedite the processing of the request it is helpful that the
following updated information be made available upon request.
1) Network engineering plans, including subnets,
host counts, and hosts per subnet, with projected utilization rates and
associated confidence levels of those projections for one and two years
2) Deployment schedule for the network, including
major milestones for each subnet
3) Network topology diagrams
4)
Any additional supporting explanations for the
request. This is especially helpful in cases when CENIC/ARIN guidelines cannot
be strictly adhered.
All
CENIC IP address assignments are non-portable and must be returned within one
year if no longer using CENIC
CalREN services.
For
any IP address requests, CENIC may require additional verification to
confirm accuracy of supporting
documentation.