damian91 wrote:
Just not sure if there is any issues with firmware between the two ...

hornbyp wrote:

damian91 wrote:
Just not sure if there is any issues with firmware between the two ...

The latest firmware for the 2830 is "3.8.8.3". The version you are running is almost 8 years old
Version 3.8.8.2, (from two years ago) was categorised: Critical – Upgrade recommended immediately

You may find the problem goes away, with a firmware upgrade...

If it doesn't:-

Can the routers 'ping' one another? (Using either the telnet interface and "IP PING 10.0.0.1" or the Web GUI "Diagnosis >> Ping Diagnosis".)
What about Router to another machine on the Remote LAN?
Next try using "Traceroute" from a system on one LAN to a system on the remote LAN. (Use 'Tracert -d' on Windows). How far does that get?
(You can't use the Router's own Traceroute function for this, as it always directs traffic to the WAN)

I would guess this is a Routing table issue somewhere.

I see you have used a 10.0.0.0/24 network - i.e. you're using a non-standard subnet mask. While this is valid - and has its uses - it also introduces complications, which might be causing your problem. (I've seen quite a few folk do this, and I've never quite understood why they've needed to)

damian91 wrote:

But from the computer on 192.168.121.200 can only ping to 10.20.0.1 ran tracert and it stops at 10.20.0.1.
Checked routing table on 10.20.0.1 and there seems to be a static route saying 192.168.121.0 255.255.255.0 via 10.20.0.200 interface vpn1

There is no gateway or anything setup for 10.20.0.200 so not sure if that has anything to with it and how can you remove it?

hornbyp wrote:

damian91 wrote:

But from the computer on 192.168.121.200 can only ping to 10.20.0.1 ran tracert and it stops at 10.20.0.1.
Checked routing table on 10.20.0.1 and there seems to be a static route saying 192.168.121.0 255.255.255.0 via 10.20.0.200 interface vpn1

There is no gateway or anything setup for 10.20.0.200 so not sure if that has anything to with it and how can you remove it?

That Route appears to be wrong, so the question is "what set it up?"

Is it visible in the GUI @ "LAN >> Static Route Setup" ?
Otherwise there's a Telnet command: "ip route del"

Do you recognise 10.20.0.200 as being anything special? - Has it been entered in error in the "TCP/IP Network Settings" section of the LAN-to-LAN profile?

There's a 'Code' in the Routing Table display, that shows where the Route entry came from.

This is the (abbreviated and re-ordered) o/p from my 2830n:-
(192.168.200.254 is the 2830n, 192.168.100.254 is remote 2860n)

Code:

> ip route status Codes: C - connected, S - static, R - RIP, * - default, ~ - private * 0.0.0.0/ 0.0.0.0 via 62.3.80.21, WAN2 C~ 192.168.200.0/ 255.255.255.0 is directly connected, LAN1 C~ 192.168.100.254/ 255.255.255.255 is directly connected, VPN-2 S~ 192.168.100.0/ 255.255.255.0 via 192.168.100.254, VPN-2 * 62.3.80.21/ 255.255.255.255 via 62.3.80.21, WAN2 S --.69.--.148/ 255.255.255.255 via --.69.--.148, WAN2 >