[c-nsp] VRF-lite question on RD's

[ChrisSerafin]

I have 3 VRF's on a CE router:



ip vrf xxx-General
 rd 1:10
 route-target export 1:10
 route-target import 1:10
!
ip vrf xxx-Guest
 rd 1:30
 route-target export 1:30
 route-target import 1:30
!
ip vrf xxx-Voice
 rd 1:20
 route-target export 1:20
 route-target import 1:20

I just got 3 new VRF's from the ISP confgured, and I'm wondering what 
numbers I need to have for the 'rd' and 'route-target xxport' 
commands...? Are these arbitrary, come from the ISP, or can I just use 
40, 50, and 60?


Thanks,

chris