[j-nsp] Urgently Need Sample of IP Address Plan
leslie at craigslist.org
Mon Mar 16 16:31:52 EDT 2009
This might be a better conversation for NANOG ?
Chuck Anderson wrote:
> On Mon, Mar 16, 2009 at 05:58:34AM -0700, chenoi A wrote:
>> I need some advised and sample perhaps... I have being searching
>> net, reading books, get some advise, ARIN/APNIC guide, etc but i
>> still think i miss the idea.
>> i have block of /22. What is the best way to manage and allocate the
>> ip ... what iam thinking now is for infra, customer, loopback.
>> is it ok if i divide it to 4 x /24. where should i start from
>> here....? do i need to allocate 1 block for customer, 1 block for
>> loopback and 1 block for infra...what is the best practice. if i got
>> some example or sample that would give me more understanding on how
>> to do this ip plan.
> How many routers do you have now? How many do you expect to grow to?
> How many links between routers do you have now? How many do you
> expect to grow to? Include links to customers in these counts.
> Those two things will tell you how much space you should reserve for
> loopbacks and point-to-point links, repectively.
> How many customers do you have? What are their address space needs?
> How many servers do you have? How many workstations, IP phones,
> printers, etc? Will they all be in one place, or in different pops?
> Do you want to segregate servers from workstations? Do you want to
> provide WiFi access on a separate subnet?
>> i want to ensure my ip plan is well manage and properly assign, no
>> waste of ip. i want to ensure i fully utilize the ip given from RIR.
>> Please help me..please do assist me...much appreciate if got sample
>> of ip plan as my guideline.
> Figure out how many subnets you need and how big each subnet should be
> based on answers to the above questions. Leave some wiggle room for
> growth within each subnet (but not too much these days or ARIN won't
> approve your request). Round up to the nearest power of 2. Pack the
> subnets together into whatever space you can justify.
> e.g. for an Infrastructure block:
> 5 routers = 5 /32 loopback IPs, round up to 8
> 8 links between core routers
> 20 customers
> 28 /30 PtP link subnets = 112 addresses total, round up to 128
> 2 DHCP/DNS servers
> 2 Web servers
> 2 Mail servers
> 2 database servers
> 2 application servers
> 2 file servers
> 12 server IP addresses, round up to 16
> 10 staff workstations
> 10 staff IP telephones
> 3 staff printers
> 29 workstation IP addresses, round up to 32
> Maybe have a DHCP pool for your LAN portable devices: 32 addresses
> Pack the above like this:
> Infrastructure 10.10.10.0/24 256
> Point-to-Points 10.10.10.0/25 128
> Workstations 10.10.10.128/27 32
> LAN DHCP Pool 10.10.10.160/27 32
> WiFi DHCP Pool 10.10.10.192/27 32
> Servers 10.10.10.224/28 16
> Loopbacks 10.10.10.240/29 8
> FREE 10.10.10.248/29 8
> For customer assignments, you make them justify their needs in the
> same way so you can size their assignments properly and fit them into
> the space you request from ARIN.
> juniper-nsp mailing list juniper-nsp at puck.nether.net
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