situation: i have cisco 1841 [headq] on static address and cisco 876 [branch office] on dynamic adsl address it is configured an ipsec vpn tunnel between them so both locations are part of corporate network [wan] when the tunnel is up, i may reach headq from branch, and branch from headq as well, this is ok
problem: but, when 876 adsl address changes [regularly], obviously tunnel is going down, and i need incoming call [f.e. ping] from branch office to static headq [well known ip] to re-establish the tunnel. it is then ok for next period
current solution: at branch office, i have one dedicated workstation allways powered-on that serves as ping generator, to keep tunnel to headq on. i was not trying any solution based on dyndns or similar.
question: is it possible to configure cisco 876 router to periodicaly issue ping [or something similar] on frequent basis [few minutes] to force tunnel re-establish after adsl address change
any suggestions?
thnx!