Hello,
If you could help me, it would be great.
I am trying to route the following segments(each distant location) and do not know how to route A from/to C.
Between A and B is kind of secure line provided by my ISP. ISP controls source/destination segment and A can be accessed only from B and B can be accessed only from A. B had other gateway via L3SW.
B and C has already established routing and can connect to each other via the L3SW.
<Segment A>
10.10.1.80/28
Router: cisco 1812J
Dialer1: PPPoE/ip unnumbered fas0
fas0 ip: 10.10.1.81
<Segment B>
10.10.1.64/28
Router: cisco 1812J
Dialer1: PPPoE/ip unnumbered fas0
fas0 ip: 10.10.1.65
L3SW: 10.10.1.78
*B & C can connect between this L3SW
<Segment C>
10.10.2.0/24
I think I need to configure tunneling to router A and B to make routing from A to C.
<Configuration router A>
interface Tunnel0
ip address 192.168.100.1 255.255.255.0
tunnel source FastEthernet0
tunnel destination 10.10.1.65
tunnel mode ipip
ip mtu 1434
interface FastEthernet0
description Connected to Ethernet LAN
ip address 10.10.1.81 255.255.255.240
ip tcp adjust-mss 1390
interface Dialer2
description PPPoE Dialer Interface
ip unnumbered FastEthernet0
<Configuration router B>
interface Tunnel0
ip address 192.168.100.2 255.255.255.0
tunnel source FastEthernet0
tunnel destination 10.10.1.81
tunnel mode ipip
ip mtu 1434
interface FastEthernet0
description Connected to Ethernet LAN
ip address 10.10.1.65 255.255.255.240
ip tcp adjust-mss 1390
interface Dialer2
description PPPoE Dialer Interface
ip unnumbered FastEthernet0
I am not quite sure how to write the configuration to router B to make routing A to C. As I wrote above, B and C is conncted and A can only connect to B. I am not sure of mss and mtu. If I do not use tunneling, mtu is 1454 and mss is 1414.Any suggestion would be appreciated.
Regards,
