From: iosluver@gmail.com
Date: Mon Dec 24 2007 - 15:21:02 ART
HiGS,
Can someone please shed some light on the following scenario & how it can be achieved with only the given topology. There 2 routers with a Frame-relay & PPP link between them. I want the PPP link to serve as a backup when the frame-relay link fails. I want R4 to perform NAT on its E1/0 so all packets destined to R5 are translated from the 10.10.4.0/24 subnet to an address R5 has a route for. I tried using a tunnel interface but it doesn't work. Are there restrictions with using NAT on logical interfaces (Loopback or tunnel)?
Frame-Relay
-----------
- -
R4---------- - -------------R5
- -
-----------
PPP
R4
**********
interface Loopback0
ip address 150.1.4.4 255.255.255.0
end
interface Ethernet1/0
ip address 10.10.4.4 255.255.255.0
ip nat inside
ip virtual-reassembly
no ip route-cache cef
no ip mroute-cache
full-duplex
end
!
int s1/0
ip address 156.1.45.4 255.255.255.0
encapsulation frame-relay
no ip route-cache cef
ip ospf hello-interval 3
no ip mroute-cache
frame-relay map ip 156.1.45.5 405 broadcast
no frame-relay inverse-arp
interface Serial1/1
ip address 156.1.0.4 255.255.255.0
encapsulation ppp
no ip route-cache cef
ip ospf cost 1000
no ip mroute-cache
clock rate 128000
router ospf 1
router-id 150.1.4.4
log-adjacency-changes
network 150.1.4.4 0.0.0.0 area 0
network 156.1.0.0 0.0.255.255 area 0
neighbor 156.1.45.5
!
ip nat inside source route-map TEST interface Tunnel45 overload
R5
*******
interface Loopback0
ip address 150.1.5.5 255.255.255.0
end
interface Serial1/0
ip address 156.1.45.5 255.255.255.0
encapsulation frame-relay
no ip route-cache cef
ip ospf hello-interval 3
ip ospf priority 0
no ip mroute-cache
frame-relay map ip 156.1.45.4 504 broadcast
no frame-relay inverse-arp
end
interface Serial1/1
ip address 156.1.0.5 255.255.255.0
encapsulation ppp
no ip route-cache cef
ip ospf cost 1000
no ip mroute-cache
end
router ospf 1
router-id 150.1.5.5
log-adjacency-changes
network 150.1.5.5 0.0.0.0 area 0
network 156.1.0.0 0.0.255.255 area 0
!
Thanks in advance.
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