Routering problem (Beginner)

[a_jam_sandwich]

Hi,

I’m yet again stuck on setting up our routers.

We have a router in Scotland configured on a 11.x.x.x network and a router 10.x.x.x in Rugeley these two devices works fine and traffic between is working fine.

Scotland f0/0 -> 11.0.0.250

Rugeley f0/0 -> 10.0.0.250

At Rugeley we also have another router to a lease line used to connect to the internet this router is 10.0.0.253

Traffic for the internet in Scotland/Rugeley goes through a proxy located in Rugeley this works fine.

The problem now is the proxy is only for internet traffic and a PC in Scotland 11.0.1.50 needs to contact a server 81.123.x.x in the outside world using the Lease Line Router 10.0.0.253 this is where I am stuck I have no idea how to do this.

The routers in Scotland and Rugeley are both using RIP2.

You help is greatly appreciated

Andy

[sachin]

You can enable NATing for 11.X.x.x network on internet router.

[a_jam_sandwich]

nope the router is not under our control :(

[sachin]

Is 11.X.x.x network is valid pool ? Have you got this pool from ISP ? Have your ISP done routing for the 11.x.x.x network pointing to your internet router ? If not , then you have to do NATing on router, there is no other way.

[Georg Pauwen]

Hello Andy,

you could either configure a static host route on the router where the PC with IP address 11.0.1.50 is connected to:

ip route 81.123.X.X 255.255.255.255 10.0.0.253

or use a route map and redirect all traffic for that destination to your leased line router:

route-map LL_ROUTER permit 10

match ip address 101

set ip address 10.0.0.253

or

set ip next-hop 10.0.0.253

!

Interface FastEthernet0/0

ip policy route-map LL_ROUTER

!

access-list 101 permit ip any host 81.123.X.X

In the second example, your interface FastEthernet0/0 would be the interface where your host 11.0.1.50 is connected to. I do not know how your two routers are connected, but both the static route and the route map are configured on the router directly connected to the host, pointing to the leased line router.

HTH,

GP

[a_jam_sandwich]

Thank very much for your reply gpauwen. I have added the ip route into the scotland router the 11.x.x.x network. now when tracing the route it gets to the 192.168.1.2 (Rugeley Serial WIC) then I get destination host unreachable.

============ SCOTLAND CONFIG ============

!

hostname scotland

!

boot-start-marker

boot-end-marker

!

enable secret xxxx.

enable password xxx

!

no aaa new-model

ip subnet-zero

!

!

!

no ip domain lookup

no ftp-server write-enable

!

!

!

!

interface FastEthernet0/0

description connected to Scotland LAN

ip address 11.0.0.250 255.0.0.0

duplex auto

speed auto

!

interface Serial0/0

description connected to rugeley

ip address 192.168.1.3 255.255.255.0

encapsulation ppp

!

router rip

version 2

network 11.0.0.0

network 192.168.1.0

no auto-summary

!

ip classless

ip route 81.123.154.122 255.255.255.255 10.0.0.250

no ip http server

!

snmp-server community public RO

snmp-server enable traps tty

!

line con 0

exec-timeout 0 0

password xxx

login

line aux 0

password xxx

login

line vty 0 4

password xxx

login

!

!

!

end

Thanks

Andy

[Georg Pauwen]

Hello Andy,

I am not 100% clear on your physical setup, it seems to me that you need another static route on the Wigley router. Can you make a little schematic drawing, something like:

Router Scotland --> Router Wigeley etc.

Regards,

GP

[a_jam_sandwich]

I do belive your right ive added a static route on the rugeley router and it no timesout which I think might be down to the gateway only allowing stuff on the 10.x.x.x network

Traffic flow

Request to 81.123.154.122

PC on 11.x.x.x network -> Scotland(ROUTER) -> Rugeley(ROUTER) -> 10.0.0.253(GATEWAY)

At present I have both the rugeley and scotland routers with static routes

IP ROUTE 81.123.154.122 255.255.255.255 10.0.0.253

And now I get a timeout instead of destination host unreachable from the rugeley serial card so I think that the NTL gateway(10.0.0.253) needs to allow traffic from the 11.x.x.x network.

What do you think

Andy

[sachin]

Is 11.X.x.x network is valid pool ? Have you got this pool from ISP ? Have your ISP done routing for the 11.x.x.x network pointing to your internet router ? If not , then you have to do NATing on router, there is no other way