Problem with the Site to Site IPSec VPN using ADSL and PPPoE

I have an IPSec site to Site VPN between a 2805 and an 1841. Both have fixed IP, but the end of 1841 uses a PPPoE and ADSL connection. The MTU that is displayed on the Dialer0 interface is 1454.

I can get the packets through the Tunnel without problem (standard pings), but don't spend larger packages.

Any suggestions?

You can apply on both. Here's a URL that explain the problem of MTU and option in detail.

http://www.Cisco.com/en/us/Tech/tk827/tk369/technologies_white_paper09186a00800d6979.shtml

Kind regards

Arul

* Please Note If this can help *.

Tags: Cisco Security

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