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Re: Dodgy AS327933 ...?


From: Jay Hennigan <jay () west net>
Date: Fri, 11 Aug 2023 09:53:16 -0700

On 8/11/23 02:26, Nick Hilliard wrote:

If your asn is 327933, then:

add chain=foo prefix=192.0.2.0/24 action=accept set-bgp-prepend=2

... will produce: "327933 327933", and:

add chain=foo prefix=192.0.2.0/24 action=accept set-bgp-prepend-path=2

... will produce: "327933 2".

Routeros does command completion on the CLI, so this is finger-slip territory, and the two commands are visually similarly enough to each other that it would be easy not to notice.

In other news, Mikrotik users at that ASN are discovering that 327,933 prepends may be a bit excessive.

--
Jay Hennigan - jay () west net
Network Engineering - CCIE #7880
503 897-8550 - WB6RDV


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