I'm not 100% sure about which RFC - but thats what I have been told by some highly decorated Mikrotik technicians ;-) it is strange that Cisco doesn't follow the RFC, which was created by themselves. maybe, there can be another explanation? If "cisco - mikrotik" IPsec is a real problem, w...

makkan, thank you for your answer!
following your idea, if to configure IPsec between two mikrotik routers, it should work fine

besides, what exact RFC have you meant?
http://en.wikipedia.org/wiki/IPsec

Hello! We have the problems with IPsec between RB1200 (ROS 5.7, 5.8) and Cisco ASA 5500 periodically, it stops working - the IPsec SA itself is up, but packets do not return from the mikrotik to the IPsec tunnel from Cisco we can see the encaps, but no decaps sometimes it is enough just to initiate ...

Hello! does anybody have any idea of the issue? We have the same problem, (RB1200, ROS 5.7) , ipsec RB1200 <-> Cisco PIX 525 IPSEC periodically stops working without any reasons sometimes it comes up after iniatiing the connection from mikrotik if it doesn't help, we use /ip ipsec installed-sa flush...