Re: RIB-GROUP confusion

Hi all,

My case is similar, but I can't ping between routing-instances.

Goals:
Configure "source-address" on "system ntp" stanza (Junos version don't support RI). My loopback resides on global table (inet.0) and I need reach NTP server on RI: OAM (type virtual-router).

Topology:

                                 BGP: 172.31.20.92/30               

R1     <------------------------------------------------------------>     R2  
lo0.0 = 172.31.11.127/32                                                    lo0.0 = 172.31.20.253/32
RI:global (inet.0)                                                                  RI: OAM (OAM.inet.0)

Configuration (R1):
set interfaces lo0 unit 0 family inet address 172.31.11.127/32

set routing-options interface-routes rib-group inet IMPORT-NTP
set routing-options rib-groups IMPORT-NTP import-rib inet.0
set routing-options rib-groups IMPORT-NTP import-rib OAM.inet.0
set routing-options rib-groups IMPORT-NTP import-policy NTP-POLICY

set policy-options policy-statement NTP-POLICY term 1 from rib OAM.inet.0
set policy-options policy-statement NTP-POLICY term 1 from route-filter 172.31.11.127/32 exact
set policy-options policy-statement NTP-POLICY term 1 then accept
set policy-options policy-statement NTP-POLICY term LAST then reject

set routing-instances OAM protocols bgp group OAM type external
set routing-instances OAM protocols bgp group OAM export OAM-bgp_export
set routing-instances OAM protocols bgp group OAM neighbor 172.31.20.94 peer-as 65002
set routing-instances OAM protocols bgp group OAM neighbor 172.31.20.94 local-as 65001

The lo0.0 (directly on inet.0) is been imported to rib OAM.inet.0 and advertised to neighbor BGP configured on RIAM

R1> show route table inet.0 172.31.11.127/32 exact

inet.0: 14 destinations, 14 routes (14 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.31.11.127/32   *[Direct/0] 5d 05:32:55
                    > via lo0.0
     
---------------------------------------------

R1> show route table OAM.inet.0 172.31.11.127/32 exact

OAM.inet.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.31.11.127/32   *[Direct/0] 06:06:12
                    > via lo0.0

--------------------------------------------

R1> show route advertising-protocol bgp 172.31.20.94

OAM.inet.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
  Prefix                  Nexthop              MED     Lclpref    AS path
* 172.31.11.127/32        Self                                    I

But from BGP neighbor I can't reach this IP. (source is a loopback on RIAM from neighbor). BGP peer is established by point-to-point interfaces (172.31.20.92/30):

R2> ping 172.31.11.127 routing-instance OAM
PING 172.31.11.127 (172.31.11.127): 56 data bytes
36 bytes from 172.31.20.93: Destination Net Unreachable
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 0556   0 0000  40  01 fd37 172.31.20.94  172.31.11.127

36 bytes from 172.31.20.93: Destination Net Unreachable
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 0565   0 0000  40  01 fd28 172.31.20.94  172.31.11.127

----------------------------------------------------------------

R2> ping 172.31.11.127 routing-instance OAM source 172.31.20.253
PING 172.31.11.127 (172.31.11.127): 56 data bytes
36 bytes from 172.31.20.93: Destination Net Unreachable
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 070f   0 0000  40  01 fadf 172.31.20.253  172.31.11.127

36 bytes from 172.31.20.93: Destination Net Unreachable
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 071e   0 0000  40  01 fad0 172.31.20.253  172.31.11.127