On Sat, Aug 08, 2026 at 11:27:05PM +0000, Job Snijders wrote:
On Sat, Aug 08, 2026 at 06:15:08PM -0500, Bryton Herdes via routing-wg wrote:
if you're interested in a router feature knob that could selectively ignore maxLength of ROAs while (only) performing RTBH route validation, I can share at least the Juniper and Cisco feature requests I've submitted. Let me know.
Just ignoring maxLength because it is 'inconvenient' sounds pretty unsafe, right? The resources holder probably didn't set that maxLength to be ignored.
What other safeguards will accompany such a risky feature?
A potential guardrail maybe is to only ignore maxLength if the peer-as (the neighboring AS from which the blackhole route was received) is the same AS as the Origin AS in the VRP for which the maxLength is ignored? Then you'd basically have the same setup as the config example I shared previously in this thread, and less need for automation. Kind regards, Job