Remote Networking

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Aruba Employee
Posts: 64
Registered: ‎04-07-2007

Remote AP dropping L2TP tunnel every 4-5 min

I have a remote user on an AP-70 with a VoIP phone attached to his remote AP.

When the remote was first set up (2 years ago) he had no problems - could talk for hours. In the last 2 months his calls are being dropped after 4-5 min.

Looking at the logs I see that his L2TP session is being timed out due to 2 missed L2TP hellos

it is then quickly re-established.

He suspects his local small ISP has misconfigured their netequalizer and that's causing this issue. I've never configured one of those devices so I have no idea if that is something it could be doing.

Could this be causing this? Any other thoughts on why? Anyone seen this before?

Here are the logs from his remote:

Jan 21 07:18:33 :142002: |l2tp| L2TP Tunnel from timed out due to missed L2TP hellos)
Jan 21 07:18:33 :142001: |l2tp| Deleting L2TP Tunnel from (innerip=192.168.110.229)
Jan 21 07:20:29 :103015: |ike| IKE Main Mode Phase 1 succeeded for peer
Jan 21 07:20:29 :103022: |ike| IKE Quick Mode succeeded for peer
Jan 21 07:20:29 :103034: |ike| IKE Quick Mode succeeded from client external
Jan 21 07:20:29 :124038: |authmgr| Selected server Internal for method=VPN; user=, essid=<>, domain=<>, server-group=sg-auth-vpn
Jan 21 07:20:29 :124003: |authmgr| Authentication result=Authentication Successful(0), method=VPN, server=Internal, user=00:1c:0f:b4:28:00
Jan 21 07:20:29 :142000: |l2tp| Creating L2TP Tunnel from 1(innerip=192.168.110.231)
Jan 21 07:20:29 :124007: |authmgr| Detected AP (f/l 0) with ip 192.168.110.230 slotport 4037 status 0 txkey 0
Jan 21 07:20:29 :124007: |authmgr| Detected AP (f/l 1) with ip 192.168.110.231 slotport 4037 status 1 txkey 0
Jan 21 07:20:30 :124007: |authmgr| Detected AP (f/l 0) with ip 192.168.110.231 slotport 4037 status 1 txkey 0
Frequent Contributor I
Posts: 108
Registered: ‎09-26-2008

keepalives...

could be some firewall policies dropping AP-controller keepalives within the VPN/IPSec tunnel...

Michael
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