[c-nsp] PBA best practices

[Pshem Kowalczyk]

Hi,

We (for a fixed line fibre/DSL customers) run the following settings:
- block size - 1024 ports
- up to 4 blocks per sub
- address sharing ratio - used to be 30:1, now moving to about 15:1
- tcp initial timeout - 60 sec, UDP - 60 sec.

kind regards
Pshem


On Fri, 26 Feb 2016 at 12:56 Adam Vitkovsky <Adam.Vitkovsky at gamma.co.uk>
wrote:

> Hi folks,
>
> Would like to ask regarding PBA best practices.
>
> From the documentation it was obvious that from a performance point of
> view using smaller number of larger pools is better than using large number
> of smaller pools.
> But how do I strike the balance? In other words what is the average number
> of sessions for an average internet user?
>
> I'm interested in these values in particular:
> block-size ?saw 512 or 1024?
> max-blocks-per-user ?have no idea 2 or 4?
> active-block-timeout ?
> overall mapping-timeout ?
> address sharing ratio ?16:1 before spamhaus blacklists the public IP?
>
> If anyone could share their experience or point me to some nanog
> presentation or a best practice doc that would be great.
>
>
> adam
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>         Adam Vitkovsky
>         IP Engineer
>
> T:      0333 006 5936
> E:      Adam.Vitkovsky at gamma.co.uk
> W:      www.gamma.co.uk
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