MPLS Route Targets

So I recently learned that 'route distinguishers' are slightly different
from route-tags. When I troubleshoot MPLS route issues, I'd like to get on
a P router and do a 'show ip bgp vpn4 all' to find all the routes for a
particular VPN Customer.. THe problem is that this may not work right if
you have an export map. Is there another command to will show all the
route-targets with each route?

Example Usage:

R1 (CE) -- R2(PE) -- R3 (P) -- R4 (PE --Not relevant from here on out.)

R2 Config:

Ip vrf VPN_B
rd 100:2
route-target import 100:2
route-target export 100:2
export-map CHANGE_ROUTE_TARGET

route-map CHANGE_ROUTE_TARGET permit 10
match ip address prefix PRE_CHANGE_RT
set extcommunity rt 100:200

route-map CHANGE_ROUTE_TARGET permit 20

ip prefix-list PRE_CHANGE_RT permit 175.1.5.0/24

router bgp 100
 no bgp default ipv4-unicast
 neighbor 150.1.3,3 remote-as 100
 neighbor 150.1.3.3 update-source Loopback0
 !
 address-family vpnv4
  neighbor 150.1.3.3 activate
  neighbor 150.1.3.3 send-community extended

 address-family ipv4 vrf VPN_A
  redistribute connected
  redistribute ospf 10 vrf VPN_A
  no synchronization

Ideally I'd like to find the command (if it exists) that will dump out all
the route-targets riding inside the MPLS VPN similar to combining these two
statements:

Rack1R3# show ip bgp vpn4 all
   Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: *100:5* (default for vrf VPN_A)
*>i175.1.1.0/24 150.1.2.2 0 100 0 ?
*>i175.1.2.0/24 150.1.2.2 0 100 0 ?
*>i175.1.3.0/24 150.1.2.2 1 100 0 ?
*>i175.1.4.0/24 150.1.2.2 0 100 0 ?
**>i175.1.5.0/32 150.1.2.2 2 100 0 ?*

Rack1R3#show ip bgp vpn all 175.1.5.0
BGP routing table entry for 100:5:175.1.5.0/24, version 39
Paths: (1 available, best #1, table VPN_A)
  Advertised to update-groups:
        1
  Local
    0.0.0.0 from 0.0.0.0 (150.1.3.3)
      Origin incomplete, metric 0, localpref 100, weight 32768, valid,
sourced, best
      Extended Community: RT:100:200 OSPF DOMAIN ID:0x0005:0x000000050200
        OSPF RT:0.0.0.1:2:0 OSPF ROUTER ID:150.1.3.3:0
      mpls labels in/out 21/aggregate(VPN_A)

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Received on Thu Aug 19 2010 - 19:53:09 ART