Hi All,
i'm using on IOS-XR Version 5.3.4, BGP Next-Hop Tracking (aka BGP-NH-TK), with this RPL:
route-policy NEXTHOPTRAKING-FILTER
if destination in PFX_NEXTHOPTRAKING-FILTER_V4 then
pass
else
drop
endif
end-policy
with:
prefix-set PFX_NEXTHOPTRAKING-FILTER_V4
0.0.0.0/0 ge 24
end-set
and all is working correctly. all my peers are on P2P /30 or less.
Now i'm activating on my Edge router, connection to an IX-lan but it as /23, so any NH has been invalidated from the policy, and i need to modify my prefix-list.
the question is: If I commit the new PFX-LIST to add my new /23 LAN, the BGP-NH-TK will recalculate all the NHs? if yes, it probably recalculate the complete RIB/FIB.....so it will be disruptive for traffic?
Thanks for your help....
