[c-nsp] 6500: soft migration to vrf ?

[Alexandre Snarskii]

Hi!

I'm trying to migrate part of our network into l3vpn with minimal service 
interruption. To achieve this, i tried to set up global-to-vrf
loopback link, enable ospf on it, and then move links to vrf one by one,
not all at one. But it does not work as i expected - i'm not able 
to ping global address from vrf side and vice versa. :( 

Router in question is 6500/sup2/msfc2, equipped with OSM-4GE-WAN.
Physical connection established between OSM port on WAN side and switched 
gigabit ethernet on LAN side (there are always some l3vpns serviced). 
IOS 12.2(17d)SXB8. 

I tried to configure extra subinterface on wan side, put it in 
vrf on vrf side: 

int ge-wan3/4
 override-mac-address xxxx.yyyy.zzzz

int ge-wan3/4.69 
 encaps dot 69 
 ip vrf forwarding VRF
 ip address 10.0.33.254 255.255.255.0 

On the 'LAN' side, in 'global' table configured standard SVI: 

int vlan 69 
 ip address 10.0.33.1 255.255.255.0 

>From the external host attached to vlan69 i'm able to ping both addresses,
but i'm not able to ping one address from another: 

RT033-201#ping 10.0.33.254

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.33.254, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
RT033-201#ping vrf VRF 10.0.33.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.33.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

Arp tables shows that remote address is 'Incomplete': 

RT033-201#show ip arp vrf VRF 
Protocol  Address          Age (min)  Hardware Addr   Type   Interface
Internet  10.0.33.1               0   Incomplete      ARPA   
Internet  10.0.33.254             -   00d0.0063.100c  ARPA   GE-WAN3/4.69
Internet  10.0.33.252             1   00e0.0082.34c6  ARPA   GE-WAN3/4.69

Any ideas why it does not work ? Or it's intended limitation of IOS ? 

PS: unfortunately, i have no spare ge-wan ports to try ge-wan to ge-wan 
loopback :(