Hi All
Please fill me up on this one,,,,,,When an Ingress PE receive a new VPN route, which one of the 3 tables is it going to build first? the RIB followed by FIB and then the LFIB? When do CEF join the equation? When is the VPN label and the Transport label added to the prefix entry. Please refer to the below output,the first output had the VPN label allocated but not the transport label. Your help will be appreciated!
gw1.osh1#show ip route vrf hasho-mpls-vpn 172.16.76.12
Routing Table: hasho-mpls-vpn
Routing entry for 172.16.76.12/32
Known via "bgp 33xx", distance 200, metric 130816
Tag 64xxx, type internal
Last update from 197.234.67.37 1d19h ago
Routing Descriptor Blocks:
* 197.x.x.x (default), from 196.x.x.x, 1d19h ago
Route metric is 130816, traffic share count is 1
AS Hops 1
Route tag 64xxx
MPLS label: 17
MPLS Flags: MPLS Required
gw1.osh1#show ip cef vrf hasho-mpls-vpn 172.16.76.12
172.16.76.12/32
nexthop 197.x.x.x GigabitEthernet0/0/4 label 420 17
gw1.osh1#show mpls forwarding-table vrf hasho-mpls-vpn 172.16.76.12
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
None 17 172.16.76.12/32[V] \
0 Gi0/0/4 197.x.x.x
