Issue Description
Topology:
Internet Firewall(E1000)----MCE1(S8500-1)---PE1(NE40E1)---P(NE80E)---PE2(NE40E2)--MCE2(S8500-2)--GGSN.
S8500-1 run OSPF with NE40E-1 in area 0, S8500-2 and GGSN run OSPF with NE40E-2 in area 0.
Need see the derault route in GGSN and mobile subscriber behind GGSN need visit internet.
Handling Process
Here is the key configuration.
In S8500-1
#
ospf 10 vpn-instance vpn_gi
import-route bgp
default-route-advertise always
#
In NE40E01
#
bgp 65535
ipv4-family vpn-instance vpn_gi
import-route ospf 10
default-route imported
#
ospf 10 vpn-instance vpn_gi
import-route bgp
#
In NE40E02
#
bgp 65535
ipv4-family vpn-instance vpn_gi
import-route ospf 10
#
ospf 10 vpn-instance vpn_gi
default-route-advertise always
import-route bgp
#
Then in S8500-2 and GGSN when display ip route we can see the default route in OSPF.Mobile subscrible can visit internet.
Root Cause
The default route can not imported between OSPF and BGP MPLS VPN.Need configure manually.
