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IPsec renew parameter setting

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I'm having a problem with the setting of an IPsec tunnel.

I successfully created a VPN tunnel (IPsec) between WR21(dynamic IP) and Cisco RV082 (static IP over NAT-T). Tunnel is up and data flows in. On this tunnel I set "Renew the tunnel after" to 2 minutes.
Then, I created a new tunnel from a different WR21 with "Renew the tunnel after" to 2 hours.
Both tunnels seemed to work fine but actually they behave in different way:
1) tunnel 1 has been working properly without any interruption for 5 days. No VPN tunnel break, NO data flow break
2) tunnel 2 time to time drops the VPN tunnel and it takes a while to established again the connection. Data flow is interrupted.

Any ideas why this happen?
If I keep the 2 minutes for "Renew the tunnel after" field, is there any problem for the Digi WR21 on the long rung?

asked May 21, 2015 in Digi TransPort Cellular by mfantato New to the Community (0 points)

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