[c-nsp] PBA best practices

Adam Vitkovsky Adam.Vitkovsky at gamma.co.uk
Thu Feb 25 18:55:46 EST 2016

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 Vitkovsky
        IP Engineer

T:      0333 006 5936
E:      Adam.Vitkovsky at gamma.co.uk
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