Re: uPRF strict more

On Tue, 28 Sep 2021 17:47:41 -0700 Randy Bush <randy@psg.com> wrote:

do folk use uPRF strict mode?

Presumably you mean uRPF. As of a few months ago, the .edu I was doing netops at, Juniper's 'rpf-check' option was set on all the edge interfaces where there were only end hosts. This is strict mode. The Cisco counterpart devices would use ' ip verify unicast source reachable-via rx'. Also strict mode. More complicated inter-router links would not use this, but some had form ingress filter that performed roughly the equivalent where necessary. John