AS PATH limits

craig washington craigwashington01 at
Fri Sep 22 18:23:36 UTC 2017

Thank you all very much for the feedback.

As always it is much appreciated.

From: Tom Beecher <beecher at>
Sent: Wednesday, September 20, 2017 8:01 PM
To: craig washington
Cc: nanog at
Subject: Re: AS PATH limits

Too many prepends = any more than you really need for what you're trying to accomplish. :)

I've cutoff paths as short as 4 to as long as 8 before in different jobs for different reasons.

On Tue, Sep 19, 2017 at 9:33 AM, craig washington <craigwashington01 at<mailto:craigwashington01 at>> wrote:
Hello world.

I was wondering and forgive me if this discussions has already taken place.

How many AS PATHS are too many?

Meaning how do we determine how many to filter on transit links or public peering links?

Thanks in advance

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