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Re: Where are static bogon filters appropriate? was: 22.214.171.124/16 Bogons
On Sun, 4 Mar 2007, Sean Donelan wrote:
When customers misconfigure their router, e.g. wrong BGP neighbor or ASN, wrong interface IP address, exceed max prefix limit, etc; don't they lose Internet connectivity until they fix it?
Even though the BOFH in me agrees with you, I also know that every cent on my paycheck comes from the customers, so I prefer not to treat them like crap. If I can protect the internet from my customers by doing uRPF or source IP based filtering, I achieve the same thing as you but with less customer impact.
Also, all the examples you give implies a BGP transit customer. I am imagining all kinds of customers, from colo customers where I am their default gateway, to residential customers where it's the same way. Disabling their port and punting them to customer support is NOT a cost efficient way of dealing with the problems, at least not in the market I am in.
-- Mikael Abrahamsson email: [email protected]