unable to connect Two LANs via routers

zamansoomro · ‎09-23-2011

i all i have 2 2900 series routers both are connected via DVBs Router/device

R1>Dbvs<R2

R1 to DVbs Connectiion

R1: 192.168.45.10 netmask 255.255.255.0

DbVs 192.168.45.101 255.255.255.0

R2 to DVbs connection

R2: 192.168.12.10 netmask 255.255.255.0

DBVS: 192.168.12.101 netmask 255.255.255.0

I have configured default routes on both my 2900 series routers However the can ping each other but Both router have also LANs

R1 LAN interface has ip address 192.168.3.254

R2 LAN interface has ip address 192.168.2.254

I m unable to ping my LANs from both routers. one problem may he DVbS dont have router inform for My LAN and I cannot configure/make some modification to DVbs device because i dont have acces to it

is there any way for configuration so that i may be able to connect my LANs to each other without doing anything to DVbS

however GRE tunneling also not working

andrew.butterworth · ‎09-23-2011

It sounds like the DVbS don't know about your internal IP routes - i.e. they know about the connected interfaces (192.168.45.0/24 & 192.168.12.0/24) but not about the other interfaces on the 2901's (192.168.3.0/24 & 192.168.2.0/24). GRE should work but you'll need to get your routing working correctly over the GRE tunnel.

I would try this:

!R1

interface tunnel 1

ip address 192.168.255.1 255.255.255.252

tunnel source ethernet 0/0 !! the interface connected to the DVbS

tunnel destination 192.168.12.10

!

ip route 192.168.2.0 255.255.255.0 192.168.255.2

!

!R2

interface tunnel 1

ip address 192.168.255.2 255.255.255.252

tunnel source ethernet 0/0 !! the interface connected to the DVbS

tunnel destination 192.168.45.10

!

ip route 192.168.3.0 255.255.255.0 192.168.255.1

HTH

Andy