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  Reply # 1097571 29-Jul-2014 00:02
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I like the aspect of a Dynamic that i can have my IP changed at a PPP session drop.
I dont have any issues with how most ISP's deliver dynamic IP's standard.
(Cable customers will have a static IP by default, Everything else is dynamic with Vodafone unless requested)




 


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  Reply # 1106559 11-Aug-2014 15:38
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hamish225: Why do ISP's hand out dynamic IP addresses by default?

is it just easier?


Yes

is it just so they can get some extra money off us when we want a static one?


No.

surely it would be easier from a administrative point of view to make sure peoples IP addresses dont change every 5 minutes?


But they don't administer the changing addresses.  They throw 10,000 addresses in a pool with 10,000 customers and don't have to look at or care who gets what.

If you get a fixed IP, they have to track it.  When you cancel, they have to put it back in the "static" pool.  Most have ancient manual processes around static IPs, so the costs are punishing the customer for the carrier being dumb.  But they aren't "pure profit" and in many cases the punishment fee doesn't cover the cost of allocation.

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Vodafone NZ

  Reply # 1106569 11-Aug-2014 15:48
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Dratsab: Sent an email to Vodafone customer service about obtaining a static IP. They want $20.42/month (incl GST) for assigning one of these. Ridiculous.


It's free for business customers. If you're a residential customer you can get the Internet Pack http://www.vodafone.co.nz/broadband/internet-pack/ which, as you mentioned is $20-odd. It's a little more that just a Static IP considering it comes with a domain name and hosting, etc.




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  Reply # 1108673 14-Aug-2014 21:17
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hamish225: Why do ISP's hand out dynamic IP addresses by default?

is it just easier?

is it just so they can get some extra money off us when we want a static one?

surely it would be easier from a administrative point of view to make sure peoples IP addresses dont change every 5 minutes?


1. I work for an ISP and I don't know why a minority use dynamic.

2. No

3. In my opinion yes.

Most ISPs issue static IP's by default.

chevrolux: I feel like some of the reason they use a dynamic range is because it is a stipulation that comes from APNIC for using the IP range - not sure where I read it and if it applies to all the ISP's.


I've never heard of any such policy. Link please...

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  Reply # 1108745 14-Aug-2014 23:49
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I was just looking at our system which is based around reserved IP addresses.
Eg.
When your account logs in, it gets issued an ip address based on the one assigned to your username.
If a customer disconnects, it can take up to a month for a tech to go out and collect the equipment which may still be talking to our network, using that assigned ip address.

I like to keep the blocks of ip addresses assigned to each part of the network as slim as possible - and when I do need to alocate another block of 8 ip addresses, it creates alot of waste if they are not all used up. Eg. I dont want to assign a block of 8 addresses when its to accomodate just one extra customer. IP addresses are becoming rare and so when I assign a block, it needs to be for good reason.

Anywhoo around the time a customer connects or disconnects, there is extra work involved in reserving or freeing up that ip address. If they dont pay, or their account gets suspended it would be nice to be able to throw that ip address into the pool but I have to do it manually.

I can see for a larger ISP that manual work would be quite annoying so they would of course just prefer a dynamic pool with less back end management required.




Ray Taylor
Taylor Broadband (rural hawkes bay)
www.ruralkiwi.com

There is no place like localhost
For my general guide to extending your wireless network Click Here




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