Hi! I will try to help you....
1) Do you have DHCP server enabled at ADSL TD-8840T and asign an IP to the TL-R600VPN at the wan side????
Could you set up the TD-8840T as a bridge and by this way the TL-R600VPN recieve the public IP????

2) If you have DHCP server enabled at TD-8840T, but you had configured an static IP at the wan side of the TL-R600VPN, please choose this static IP in the range of the DHCP server pool...

3) As M Diamond said, if the TD-8840T recieve the public IP when ASDL Connected (PPoE i guess), set up correctly the aggresive Aggressive Mode on TL-R600VPN and TL-ER6020. Select FQDN and Create local ID and remote ID to match each other.

regards, ALex

Hello,Thank you for your help but I can not do that . I am remotely. Why would I do that, it's supposed to work and it works with equipment D-Link ...


Today I took the tests because I have no answer from the tp -link carrier ...


I removed the boxV5 on the site 3 to install a TD- 8840T . The connection works well between the D-Link and TL- ER6020 but still the same problems with the TL- R600VPN . I will eventually install a D-LINK and stopping instead of working with the TP -LINK .........

= SITE 2 <-> SITE 1 ok




= SITE 3 <-> SITE 1 ok




= CONF SITE 2 <-> SITE 1 (ok) & SITE 2 <-> SITE 3 (hs)



WTFFFFFFFFF....