L2TP script to initiate a router reload when tunnel goes down - working

Hi,
Just thought I would post a working EEM script on doing a router reload when the L2TP tunnel goes down....
I am using a 3825 router to initiate a site-to-site tunnel with a 3rd party vpn service - StrongVPN. On the odd occasion when the tunnel goes down, the l2tp tunnel state goes to "no session left" and the virtual-ppp1 interface - which is tied to the l2tp vpn - goes down. Unfortunately, because I have no control on the far end router, the only way to bring it back up is thru a router reload....
Here you go:
event manager applet L2TP-DOWN
event syslog pattern "%LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-PPP1, changed state to down"
action 1.0 syslog msg "The L2TP VPN is down"
action 1.1 cli command "enable"
action 1.2 cli command "reload in 10" pattern "confirm"
action 1.3 cli command ""
action 1.4 syslog msg "EEM scheduled reload in 10 minutes"
event manager applet L2TP-UP
event syslog pattern "%LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-PPP1, changed state to up"
action 1.0 syslog msg "The L2TP VPN is up"
action 1.1 cli command "enable"
action 1.2 cli command "reload cancel"
Jason

Hi Arie,
So, here is the script I am using....
When the L2TP tunnel goes to "no sessions left", the virtual-ppp1 interface goes down. That's the typical message I get when it goes down. So, when I reboot the router, the script shows the message that the virtual-ppp1 interface is up when the L2TP tunnel comes up. I checked the debugs and that is the behaviour when the tunnel goes up / down...
Here you go:
event manager applet L2TP-DOWN
event syslog pattern "%LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-PPP1, changed state to down"
action 1.0 syslog msg "The L2TP VPN is down"
action 1.1 cli command "enable"
action 1.2 cli command "reload in 10" pattern "confirm"
action 1.3 cli command ""
action 1.4 syslog msg "EEM scheduled reload in 10 minutes"
event manager applet L2TP-UP
event syslog pattern "%LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-PPP1, changed state to up"
action 1.0 syslog msg "The L2TP VPN is up"
action 1.1 cli command "enable"
action 1.2 cli command "reload cancel"
Thanks.

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Doing primary tests
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      Test omitted by user request: Advertising
      Test omitted by user request: CheckSecurityError
      Test omitted by user request: CutoffServers
      Test omitted by user request: FrsEvent
      Test omitted by user request: DFSREvent
      Test omitted by user request: SysVolCheck
      Test omitted by user request: KccEvent
      Test omitted by user request: KnowsOfRoleHolders
      Test omitted by user request: MachineAccount
      Test omitted by user request: NCSecDesc
      Test omitted by user request: NetLogons
      Test omitted by user request: ObjectsReplicated
      Test omitted by user request: OutboundSecureChannels
      Test omitted by user request: Replications
      Test omitted by user request: RidManager
      Test omitted by user request: Services
      Test omitted by user request: SystemLog
      Test omitted by user request: Topology
      Test omitted by user request: VerifyEnterpriseReferences
     Test omitted by user request: VerifyReferences
      Test omitted by user request: VerifyReplicas
      Starting test: DNS
DNS Tests are running and not hung. Please wait a few minutes...
See DNS test in enterprise tests section for results
......................... DC2 passed test DNS
   Running partition tests on : ForestDnsZones
      Test omitted by user request: CheckSDRefDom
      Test omitted by user request: CrossRefValidation
   Running partition tests on : DomainDnsZones
      Test omitted by user request: CheckSDRefDom
      Test omitted by user request: CrossRefValidation
   Running partition tests on : Schema
      Test omitted by user request: CheckSDRefDom
      Test omitted by user request: CrossRefValidation
   Running partition tests on : Configuration
      Test omitted by user request: CheckSDRefDom
      Test omitted by user request: CrossRefValidation
   Running partition tests on : mydomain
      Test omitted by user request: CheckSDRefDom
      Test omitted by user request: CrossRefValidation
   Running enterprise tests on : mydomain.com
      Starting test: DNS
Test results for domain controllers:
DC: DC2.mydomain.com
Domain: mydomain.com
TEST: Authentication (Auth)
Authentication test: Successfully completed
TEST: Basic (Basc)
                  Microsoftr Windows Serverr 2008 Standard
(Service Pack level: 2.0)
is supported
NETLOGON service is running
kdc service is running
DNSCACHE service is running
                  DNS service is running
DC is a DNS server
Network adapters information:
Adapter [00000006] Intel(R) PRO/1000 MT Network Connection:
MAC address is 00:0C:29:91:59:68
IP Address is static
IP address: 192.168.0.249
DNS servers:
192.168.0.105 (DC1.mydomain.com.) [Valid]
127.0.0.1 (DC2) [Valid]
The A host record(s) for this DC was found
Warning: The AAAA record for this DC was not found
[Error details: 9501 (Type: Win32 - Description: No records found for given DNS query.) - mydomain.com]
                  The SOA record for the Active Directory zone was found
The Active Directory zone on this DC/DNS server was found primary
Root zone on this DC/DNS server was not found
TEST: Forwarders/Root hints (Forw)
Recursion is enabled
Forwarders Information:
192.168.0.105 (DC1.mydomain.com.) [Valid]
192.168.0.7 (<name unavailable>) [Invalid (unreachable)]
Error: Forwarders list has invalid forwarder: 192.168.0.7 (<name unavailable>)
TEST: Delegations (Del)
Delegation information for the zone: mydomain.com.
Delegated domain name: _msdcs.mydomain.com.
DNS server: DC1.mydomain.com. IP:192.168.0.105 [Valid]
TEST: Dynamic update (Dyn)
Test record _dcdiag_test_record added successfully in zone mydomain.com
Test record _dcdiag_test_record deleted successfully in zone mydomain.com
TEST: Records registration (RReg)
Network Adapter
[00000006] Intel(R) PRO/1000 MT Network Connection:
Matching CNAME record found at DNS server 192.168.0.105:
a32fcfbd-16bb-4697-a23d-20fc3b8c274c._msdcs.mydomain.com
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[Error details: 9501 (Type: Win32 - Description: No records found for given DNS query.)]
Matching SRV record found at DNS server 192.168.0.249:
_gc._tcp.Default-First-Site-Name._sites.mydomain.com
Matching SRV record found at DNS server 192.168.0.249:
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.com
Warning: Record Registrations not found in some network adapters
TEST: External name resolution (Ext)
Internet name www.microsoft.com was resolved successfully
Summary of test results for DNS servers used by the above domain
controllers:
DNS server: 192.168.0.7 (<name unavailable>)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.168.0.7
[Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)]
DNS server: 192.168.0.105 (DC1.mydomain.com.)
All tests passed on this DNS server
Name resolution is functional._ldap._tcp SRV record for the forest root domain is registered
DNS delegation for the domain _msdcs.mydomain.com. is operational on IP 192.168.0.105
DNS server: 192.168.0.249 (DC2)
All tests passed on this DNS server
Name resolution is functional._ldap._tcp SRV record for the forest root domain is registered
Summary of DNS test results:
Auth Basc Forw Del Dyn RReg Ext
Domain: mydomain.com
DC2
PASS WARN FAIL PASS PASS WARN PASS
......................... mydomain.com failed test DNS
      Test omitted by user request: LocatorCheck
      Test omitted by user request: Intersite

Looks like it may be trying to forward to a machine that's down (DC1 and another 192.168.0.7) and root hints aren't available.
Check out this article:
http://technet.microsoft.com/en-us/library/ff807391(v=ws.10).aspx
See if you can enable DNS access through the firewall to the Internet if it's not already available. Try to match whatever forwarder settings are on DC1, or remove them entirely and let the server resolve DNS from Internet root servers. Alternativly,
you could change your forwarder to a public DNS server you have access to, your ISP should supply this or you could test with something common like 4.2.2.2.
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SWC Unified Communications

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