On 9/29/21 20:14, Phil Bedard wrote:
Disclosure I work for Cisco and try to look after some of their
peering guidelines.
Agree with Adam’s statement, use uRPF on edge DIA customers. Using it
elsewhere on the network eventually is going to cause some issue and
its usefulness today is almost nil. That being said we still see
large providers who have it turned on for peering/transit interfaces
either out of legacy configuration or other reasons. The vast
majority do not use it for those interface roles.
If you don't plan to run a full BGP table on a device, don't enable
uRPF, even loose-mode.
Mark.
