User Guide
Vigor2910 Series User’s Guide 
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IKE phase 1 proposal-To propose the local available 
authentication schemes and encryption algorithms to the VPN 
peers, and get its feedback to find a match. Two combinations 
are available for Aggressive mode and nine for Main mode. 
We suggest you select the combination that covers the most 
schemes. 
IKE phase 2 proposal-To propose the local available 
algorithms to the VPN peers, and get its feedback to find a 
match. Three combinations are available for both modes. We 
suggest you select the combination that covers the most 
algorithms. 
IKE phase 1 key lifetime-For security reason, the lifetime of 
key should be defined. The default value is 28800 seconds. 
You may specify a value in between 900 and 86400 seconds. 
IKE phase 2 key lifetime-For security reason, the lifetime of 
key should be defined. The default value is 3600 seconds. 
You may specify a value in between 600 and 86400 seconds. 
Perfect Forward Secret (PFS)-The IKE Phase 1 key will be 
reused to avoid the computation complexity in phase 2. The 
default value is inactive this function. 
Local ID -In Aggressive mode, Local ID is on behalf of the IP 
address while identity authenticating with remote VPN server. 
The length of the ID is limited to 47 characters. 
Callback Function 
(for i models only) 
The callback function provides a callback service as a part of 
PPP suite only for the ISDN dial-in user. The router owner 
will be charged the connection fee by the telecom. 
Require Remote to Callback-Enable this to let the router to 
require the remote peer to callback for the connection 
afterwards. 
Provide ISDN Number to Remote-In the case that the 
remote peer requires the Vigor router to callback, the local 
ISDN number will be provided to the remote peer. Check 
here to allow the Vigor router to send the ISDN number to 
the remote router. This feature is useful for i model only. 










