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Tunnel in ipsec vpn during idle time

hi guys!

what command should i use to  let the tunnel always up using  ipsec vpn without initiate any traffic during the idle time on the asa?

Thanks

3 REPLIES
Hall of Fame Super Silver

Re: Tunnel in ipsec vpn during idle time

Hello Alsayed,

as in routers the security associations SA have a lifetime based on two factors: time and traffic volume.

see

IPsec SAs use a derived, shared, secret key. The key is an integral part of the SA; they time out together to require the key to refresh. Each SA has two lifetimes: "timed" and "traffic-volume." An SA expires after the respective lifetime and negotiations begin for a new one. The default lifetimes are 28,800 seconds (eight hours) and 4,608,000 kilobytes (10 megabytes per second for one hour).

https://www.cisco.com/en/US/docs/security/asa/asa72/configuration/guide/ike.html#wp1042781

Be aware that extending the lifetime exposes to security risk so it is not recommended.

the best way would be to have a GRE tunnel encapsulated in IPSec on the ASA originated and terminated on routers with a routing protocol running on it and high metric so that is not used until primary path is active.

R1 ---- ASA1 ---------------------------- ASA2 --- R2

Hope to help

Giuseppe

New Member

Re: Tunnel in ipsec vpn during idle time

Hello Giuseppe!

Thanks for ur reply

New Member

Re: Tunnel in ipsec vpn during idle time

Freind Giuseppe, I need the tunnel to be up all time and ready whenever data to be send or not.

Thanks

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