I have a problem with ipsec tunnel on cisco 1841 series router. Tunnels down and up about one minuste later. When i make shutdown/no shutdown command in interface mode tunnels are up immedialtely. There are 7 tunnel in this router. Are there any bugs with this IOS? Routing protocol is OSPF.
The most recent version of 12.4(15)T is 12.4(15)T12. Since you are running 12.4(15)T5 there have been 7 updates released for that version since yours. It is reasonable to assume that there were a number of bugs fixed in those 7 updates.
Is the tunnel down then up a problem on all of the tunnels or just some of them? Does the tunnel down then up problem continue to happen or is it just as you start the tunnels (are they stable once they get started or do they continue to flap)?
You do not provide much detail in your post and so it is hard for us to know whether there is a bug that causes your symptoms or whether it is something in the config. Perhaps you could supply more details?
Thank you for providing the additional details. I do not see any particular issues in the config parts that you posted.
Is it possible that the tunnels come down because of some loss of IP connectivity? If a tunnel goes down can you do an extended ping, with the destination being the tunnel destination and the source being Dialer1 (the tunnel source)?
Is it possible that the tunnel comes down when the IPSec (or ISAKMP) SA gets to its lifetime and needs to be renegotiated?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.