Newbie x Cisco IOS-XR x ROV: BCP to not harassing peer(s) and upstream(s)

Job Snijders job at
Wed May 11 16:53:43 UTC 2022


In current versions I think enabling “soft-reconfiguration-inbound always”
(also described at )
should be enough.

Make sure to enable it on every EBGP peer you apply ROV to, or just all
EBGP peers.

This knob slightly increase your own memory consumption, but makes your
router more “neighbourly”! :-)

Kind regards,


On Wed, 11 May 2022 at 18:44, Pirawat WATANAPONGSE via NANOG <
nanog at> wrote:

> Dear Guru(s),
> We used to run our ‘Gateway Router’ with ROV turned on.
> Then, we “upgraded” it to a Cisco NCS-55A1 (5500 Series) running IOS-XR
> just a few weeks ago.
> Consequently, during my rummage through Google for a (the?) best (ROV)
> configuration template for the new router,
> I found a tutorial by Philip Smith
> [Reference:,
> Slide #55]
> which cautioned me of Cisco IOS-XR essentially “harassing” all peers and
> upstreams with ‘Route Refresh’ whenever there is a VRP change.
> The tutorial advised turning on ‘Soft Reconfiguration’ to help with the
> problem.
> On the one hand, we have a very special relationship with our upstream
> [they’re kind of community transit provider; we have an in-kind stake in
> them as well], so we obviously don’t want to cause them grievances [their
> grievance is our grievance].
> On the other hand, we can't afford to just throw away a newly bought
> gateway and buy a new one.
> So, here goes the question:
> Is setting 'Soft Reconfiguration' enough for me to keep ROV running?
> If not, is there any other solution?
> Or am I screwed anyway?
> I would very much appreciate clarification and pointer(s) to the
> solution(s).
> Thank you in advance for the help,
> Pirawat.
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