need solution

[sivared0001]

1. Make end to end connectivity first.

2. Block the network for these site

   1)Make sure that Site 4 will not advertise any network to Site 5 which it receiving from Site3 routers.

  2) On site 5 , when we check routing table of R2 router,
   it don't have network of Site3 routers.

ping 147.147.21.1   should be deny and 
ping 147.147.21.37  should be reachable.

[MHM Cisco World]

are you try to config MPLS ? MP-BGP MPLS solve all issue you face 
it give you reachability
it give you that BACKBONE is not accessible from any Site only traffic between Site is allow.

[sivared0001]

if it is mpls then, on what routers to configure mpls

[MHM Cisco World]

https://www.rogerperkin.co.uk/ccie/mpls/cisco-mpls-tutorial/

link to config the MPLS MP-BGP

[Georg Pauwen]

Hello,

what instructions are you following ? What have you configured so far, and what is not working ?

[sivared0001]

i don't known anything about that i got topology i need to configure as in the text

[Flavio Miranda]

 You need to redistribute route on R3 and R4. 

And use route map to control the advertisement. 

[paul driver]

Hello
Site 3 and 5 have a discontiguous ospf area 0 domains so you to provide end to end connectivity you need to :
1 -R3 Mutually redistribute ospf/eigrp
2- R4 Redistribute ospf into eigrp but only advertise a default route into ospf area 0

The above should provide ene-end connectively between all sites but negate the advertisement of all external routes from sites 2/3/4 into site 5 (rtrs 5 & 2)

[sivared0001]

got it everything except (advertise a default route into ospf area 0)

how to do that and on what router

[Georg Pauwen]

Hello,

the command is:

router ospf x

default-information originate always

What router you need to configure this on depends on where you want the traffic to exit...

[paul driver]

Hello

got it everything except (advertise a default route into ospf area 0)

how to do that and on what router

isn't it that attached txt file? <  rtr4 ?

[Meesi Meck]

Configuration on GNS3 software 

[Meesi Meck]

Need Configuration commands for GNS3 software