The MPLS-OPS Archive

["M. ELK" <elkou141061@hotmail.com>]

Say at PE1 we have the following config :

ip  vrf red
rd 1:1
import 1:10
export 1:20

ip route vrf red 10.10.1.0/24 intf1
ip route vrf red 10.10.2.0/24 intf2

address-family ipv4 vrf red
redistribute static
aggregate-address 10.10.0.0  255.255.0.0
exit-address-family

ip  vrf green
rd 1:2
import 1:20
export 1:10

ip route vrf green 10.9.1.0/24 intf3
ip route vrf green 10.9.2.0/24 intf4

address-family ipv4 vrf green
redistribute static
aggregate-address 10.9.0.0  255.255.0.0
exit-address-family


1- If we assume that any implementation should not differentiate between 
VRF's on different
    PE's and VRF's on the same PE's so :
    VRF red will have a route 10.9/16 ,and VRF green will have a route 
10.10/16 .
    is any implem able to do that ?
   if yes : say for 10.9/16 in VRF red , what will be the Next_hop interface 
??? .

2- Specific to cisco implementation .
    guess the above as configured is not workable ,ie: 10.9/16 will not show 
in VRF red
    neither 10.10/16 in VRF green , is it correct ?
   if yes : assume we added the following
   loopback 100 associated with VRF red .
   loopback 200 associated with VRF green .
   ip route vrf red 10.10./16 LB100
   ip route vrf green  10.9/16 LB200

   is 10.9/16 will appear in VRF red with next_hop = LB200 ,similiarly
   10.10/16 will appear in VRF green with next_hop = LB100 .

  say a ping request with source 10.10.1.1 and destination 10.9.1.1 recieved 
at VRF red ,it will be
  routed to LB200 .   LB200 after a L3 lookup in VRF green will direct the 
packet to intf3 .
  The ping reply with source 10.9.1.1 and destination 10.10.1.1 is received 
at VRF green and
  routed to LB100 . LB100 after L3 lookup in VRF red will direct the packet 
to intf1 and connectivity
  between the 2 VRF is achieved .

  is the above workable ???
  note : i have no access to a test bed to confirm the above .

Brgds

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