Unable to ping from HQ to Remote location (L2 VPN) 10 mbps

sivaprakasam81 · ‎06-09-2009

Hi All,

I use 3750 router in the main office. 3550 Switch in the remote location. There is a L2 VPN 100 mbps connection b/w these two site.

Main Site router has two interface with the network address :192.168.1.0/24

172.22.100.0/24

192.168.1.0/24 is used in the main office

172.22.100.0/24 is used in the remote office.

Unable to ping from 192.168.1.0/24 to 172.22.100.0/24.I am able to ping 192 network from 172 network.

I also attched the configuration details.

Thank you,

sivaprakasam81 · ‎06-09-2009

Can someone let me know about the issue and fix for the same.

Dennis Mink · ‎06-10-2009

looks like a routing issue mate.

look at the config of your 3750:

interface FastEthernet0/0

ip address 192.168.11.124 255.255.255.0

speed 100

full-duplex

!

interface FastEthernet0/1

ip address 172.22.100.1 255.255.255.0

speed 100

full-duplex

ip default-gateway 192.168.11.1

ip route 192.168.0.0 255.255.0.0 192.168.11.1

!

when you are pinging from 192.168.1.0/24 to 172.22.100.0/24 are you pinging from the 3750 or from a machine in the 192.168.11.0 subnet.

doing an extended ping (sourcing from 192.168.11.124 to your 3550's 172.22.100.26 should work.

now your default gateway in 192.168.11.0 seems to be 192.168.11.1, does this have a route back to 172.22.100.0/24?

if not point it to 192.168.11.124

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sivaprakasam81 · ‎06-10-2009

How can i do the routing table/configuration for to fix this.

Thank you,

Dennis Mink · ‎06-10-2009

I am assuming you are thus pinging from a client in your 192.168.11.0/24 subnet.

if your 192.168.11.1 is a cisco box, add a static route:

ip route 172.22.100.0 255.255.255.0 192.168.11.124

let me know if it works

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