I believe my BGP import policy is being evaluated twice on routes learnt from VRF BGP neighbors, upon installation into other routing-instances.
I use as-path-groups to raise/lower local-preference upon import from BGP neighbors. Below is a route that should have its local-preference adjusted to 95 through a "subtract 5." That is what happens in the verio transit VRF, however in the inet.0 table, which learns the route by belonging to the rib-group referenced in the VRF BGP configuration, the "subtract 5" action seems to be happening twice, resulting in a local-preference of 100 - 5 - 5 == 90, not 100 - 5 == 95. This would affect users who provide transit and L3VPN and learn one or more Internet routes from their customer on the PE-CE BGP session. Maybe no one is doing this because it would be too complex for customers to get their heads around, but I believe it is a buggy behavior. I have also duplicated the problem on JUNOS 8.5R1.14 with basically identical configuration. Is this a known issue? 7.6R1.9> show route www.sprintlink.net terse inet.0: 266652 destinations, 670468 routes (266652 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both A Destination P Prf Metric 1 Metric 2 Next hop AS path * 208.0.0.0/11 B 170 100 1 >A.B.C.S 1239 I B 170 90 1 >A.B.C.V 2914 1239 I verio.inet.0: 261751 destinations, 261753 routes (261751 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both A Destination P Prf Metric 1 Metric 2 Next hop AS path * 208.0.0.0/11 B 170 95 1 >A.B.C.V 2914 1239 I sprint.inet.0: 262240 destinations, 262241 routes (262240 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both A Destination P Prf Metric 1 Metric 2 Next hop AS path * 208.0.0.0/11 B 170 100 1 >A.B.C.S 1239 I [edit policy-options] 7.6R1.9# show as-path-group verio-prefdn5 as-path _placeholder "^$"; as-path sprint ".* 1239 .*"; as-path att ".* 1239 .*"; as-path lvlt ".* 3356 .*"; -- Jeff S Wheeler <[EMAIL PROTECTED]> +1-212-981-0607 Sr Network Operator / Innovative Network Concepts _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp