I have the following scenario:
2 site-to-site VPNs. The first one is established between a 2801 and a 1841, both using Advanced IP Services (versions right below). The second one is established between the same previous 2801 and a PIX 515E.
The VPN between the two routers is ok, but that one between the 2801 and the PIX is frequently hanging up. To put it up, I have to remove the crypto map from the router's outside interface and put it again.
What could be the cause of this??? These are the versions of softwares running on my boxes:
. 1841 -> Advanced IP Services - 12.4(9)T1
. 2801 -> Advanced IP Services - 12.4(9)T
. PIX 515E -> 7.0(2)