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This article describes special configuration parameters in LANCOM routers/Central Site Gateways with LCOS, which can be used to optimize the connection setup of VPn VPN connections (IKEv2).
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The default settings for the parameters described below are the recommended configuration settings. If you change these parameters, be sure to perform simulated failure tests, to ensure, that the connections are still functioning properly. |
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A Backoff-Timer of 30 seconds plus/minus a random value between 0 and 10 seconds is applied after the following VPN errors. The timer does not riseincrease after multiple failed connection attempts. ike_i_ike_key_mismatch |
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The Negotiation-Control defines, how many IKEv2 connection setups connections can be set up by the IKEv2-Responder can perform simultaneously.
If the parameter Negotiation-Control in the CLI path Setup/VPN/ is set from Normal to Medium or Fast, more connections can be set up simultaneously. When using a greater number of VPN connctions, this reduces the time, till all connections are established.
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Setting up more a greater number of VPN connections simultaneously takes more CPU ressources. Therefore this parameter has to be balanced with the value set for "Precalculation". |
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