Hello,

I have this very strange issue with a deployment of a VPN-1 (SPLAT R65) HA
cluster on a main site and ADSL s...@office boxes on several remote
locations, site to site VPNs were configured and the phase 1 negotiation
goes with no issues, but then something wrong is happening with phase 2.
On the remote locations there are only flat networks behind each Sofa box,
but behind the HA pair of the main location there are lots of different IP
ranges, which forced the administrator to configure very wide ranges when
creating the VPN on the Sofa GUI (using the "specify configuration" option).
What happens is some of the IP ranges behind the VPN-1 HA pair are reachable
while some are not, you might think it was a config issue or an overlapping
ip range causing trouble, but suddenly the situation changes and networks
that were not reachable become reachable and ones that were working fine
stop working. In the same way, moving to the other side, main site ip ranges
that were able to get to the networks behind the Sofa boxes are no loger
able to do so and some that were failing, sudenly are able to get there.

The situation occurs not only for one VPN with a Sofa box, but it has
occured with every box they have deployed (5 at this point). They purchased
10 of those boxes but stopped the deployment due to these issues and have
made rollbacks on most of them as the issue makes it almost impossible for
the poeple on the remote offices to work properly.

The Tracker on the main site shows all attempts to reach remote networks as
encrypted (no drops) and on the Sofa logs there are no errors or drops
either. Captures on both sides where taken while doing tests from a remote
office trying to reach several ip ranges on the main site and apparently
packets to failing networks reach the Sofa but never make it through the
tunnel as are not shown on the main site.

Has anybody seen something like this? Any help will be very appreaciated.

Regards


-- 
Sergio Alvarez
+(506)88301342


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