VPN Tunnel will not complete

I am wondering if anyone else runs into issues like this.  Phase 1 at the remote site(Cisco 881 series router) will complete, but then comes back to the main firewall(clustered 5520s) and Phase 2 does not complete.  In the past I have rebooted our 5520 cluster and that seems to fix it everytime, but i have over 140 remote sites and when I do that, it usually takes a long time for all tunnels to rebuild.  Are there certain commands that can be used in CLI on the 5520 cluster that will clear any caching issues?
mikhallAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

CyberwrathCommented:
You can clear an individual problematic tunnel as follows

ASA2-5520(config)# clear crypto isakmp sa ?

exec mode commands/options:
  Hostname or A.B.C.D     IP address
  Hostname or X:X:X:X::X  IPv6 address
  <cr>

Much cleaner than rebooting the cluster.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Cisco

From novice to tech pro — start learning today.