uPRF strict more

Thu Sep 30 05:01:39 UTC 2021

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.
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