I have been trying to configure IPSec on my two routers (7613 and 7609), but it never works and I used the same configs on 3845 connected to 2821 it worked well. I read that there are IPSec SPA's for these 7600 family routers. My question is can't I do basic IPSec configuration on the 7600 family without the IPSec SPA, to be more specific 7609 and 7613?
I mean as you would telnet/ssh to a switch/router to configure it, you can also set up an IPSEC connection purely so you can log onto the 7600 to configure/administer the router.
It is no use for end users whether they are coming in via a site-to-site VPN or a vpn client setup.