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  1. #1

    PI Address Space

    We are in the process of looking for a new colocation provider and we currently use our Provider's IP Space for our servers. So we will have the process of DNS changes and renumbering, etc.

    Our current provider does not allow for PI space so with them it was not an option

    What is involved in using Provider Independent IPs ?

    We are a small company and probably can't get ARIN to give us our own space (or can we?). We do have a parent company with it's own space that they could possibly give us a piece of. We can just take a piece of a class C or does it need to be a full class C?

    How does PI address space work and how does it get routed to your colocator that may be running 3-7 Internet Providers for redundancy?

    Are there any drawbacks to using PI space over the providers address space?

    Questions, questions!
    TIA.

  2. #2
    Join Date
    Feb 2004
    Location
    Louisville, Kentucky
    Posts
    1,083
    To qualify for an ARIN allocation, you would need to be multi-homed with at least a /21 fully utilized, or single-homed with at least a /20 utilized. As you said, that option may not be available to you.
    If you use space belonging to your parent company, you will need at least a /24. Some networks these days, notably Verio, are aggressively filtering long advertisements in "new" address space, so you may find that even if you borrow a /24, if it's in 66/8 for example, not everyone may hear your advertisement. If that is the case you can hound folks to add you as an exception to their filters, or you can arrange a tunnel from your parent company. Neither of those are great long-term choices.
    The above is a perfect illustration of the disadvantages of provider independent space. When using provider assigned space, they are very motivated to ensure that the space they re-assign to customers is globally reachable. That is often not the case with provider independent / portable address space.
    As to your question of, "how does it get routed," your provider will need to advertise the space you bring with you via their BGP sessions. This is very routine, and any provider whose technical staff don't immediately know what you need in this respect is a poor choice. Beware of clueless "engineers!" :-)
    Jeff at Innovative Network Concepts / 212-981-0607 x8579 / AIM: jeffsw6
    Expert IP network consultation and operation at affordable rates
    95th Percentile Explained Rate-Limiting on Cisco IOS switches

  3. #3
    jeff,

    asking arin for a /24 for multi-homing purposes may work if you have all your ducks in a row. you do, however, need to demonstrate that you have two separate bgp sessions to two separate ASes.

    ... or you can just hijack legacy space like everyone else </sarcasm>

    paul
    * Rusko Enterprises LLC - Upgrade to 100% uptime today!
    * Premium NYC collocation and custom dedicated servers
    call 1-877-MY-RUSKO or paul [at] rusko.us

    dedicated servers, collocation, load balanced and high availability clusters

  4. #4
    Join Date
    Apr 2002
    Location
    North Kansas City, MO
    Posts
    2,565
    Actually there is a proposal waiting approval from the ARIN trustee's that would make the minimum allocation a /22. They have already put the new fee structure online but haven't come right out and posted the /22 info publically yet.

    If you want to wait for a month or two this could be an option.

    Aaron
    Aaron Wendel
    Wholesale Internet, Inc. - http://www.wholesaleinternet.net
    Kansas City Internet eXchange - http://www.kcix.net

  5. #5
    Join Date
    Feb 2004
    Location
    Louisville, Kentucky
    Posts
    1,083
    Both the multi-homed /24 allocation policy, as well as the proposal to lengthen the minimum allocation size, have been in the works for years with no signs of implementation. The members want it and have voted in favor of it at ARIN meetings several times, however there seems to be little interest among the ARIN staff in getting it done. Good luck getting an allocation under those policies.
    Jeff at Innovative Network Concepts / 212-981-0607 x8579 / AIM: jeffsw6
    Expert IP network consultation and operation at affordable rates
    95th Percentile Explained Rate-Limiting on Cisco IOS switches

  6. #6
    Join Date
    Aug 2002
    Location
    Seattle
    Posts
    5,512
    Hm.. Pay ARIN another $2500 or hijack legacy space. *scratches head*

  7. #7
    Join Date
    Dec 2003
    Location
    Boston, MA
    Posts
    603
    pay !
    Axcelx Technologies - James
    Boston Colocation | Boston VPS
    Massachusetts Server Colocation and Dedicated Servers

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