FVS338 ProSafe VPN Firewall 50 Reference Manual
System Logs: WAN Status, Auto Rollover
Message | Nov 17 09:59:09 [FVS338] [wand] [LBFO] WAN1 Test Failed 1 of 3 times_ |
| Nov 17 09:59:39 [FVS338] [wand] [LBFO] WAN1 Test Failed 2 of 3 times_ |
| Nov 17 10:00:09 [FVS338] [wand] [LBFO] WAN1 Test Failed 3 of 3 times_ |
| Nov 17 10:01:01 [FVS338] [wand] [LBFO] WAN1 Test Failed 4 of 3 times_ |
| Nov 17 10:01:35 [FVS338] [wand] [LBFO] WAN1 Test Failed 5 of 3 times_ |
| Nov 17 10:01:35 [FVS338] [wand] [LBFO] WAN1(DOWN), WAN2(UP), |
| ACTIVE(WAN2)_ |
| Nov 17 10:02:25 [FVS338] [wand] [LBFO] WAN1 Test Failed 6 of 3 times_ |
| Nov 17 10:02:25 [FVS338] [wand] [LBFO] Restarting WAN1_ |
| Nov 17 10:02:57 [FVS338] [wand] [LBFO] WAN1 Test Failed 7 of 3 times_ |
| Nov 17 10:03:27 [FVS338] [wand] [LBFO] WAN1 Test Failed 8 of 3 times_ |
| Nov 17 10:03:57 [FVS338] [wand] [LBFO] WAN1 Test Failed 9 of 3 times_ |
| Nov 17 10:03:57 [FVS338] [wand] [LBFO] Restarting WAN1_ |
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Explanation | The Logs suggest that the |
| However, the reason the messages appear as above is because of the WAN |
| state transition logic which is part of the failover algorithm. The above logs can |
| be interpreted as below. The primary link failure is properly detected after the |
| 3rd attempt. Thereafter the algorithm attempts to restart WAN and checks once |
| again to see if WAN1 is still down. This results in the 4th failure detection |
| message. If it is then it starts secondary link and once secondary link is up, |
| secondary link is marked as active. Meanwhile secondary link has failed once |
| more and that results 5th failure detection message. Please note that the 5th |
| failure detection and the message suggesting secondary link is active have the |
| same timestamp and so they happen in the same algorithm |
| cycle. So although it appears that the failover did not happen immediately after |
| 3 failures, internally, the failover process is triggered after the 3rd failure and |
| transition to secondary link is completed by the 5th failure. The primary link is |
| also restarted every 3 failures till it is functional again. In the above log, primary |
| link was restarted after the 6th failure i.e. 3 failures after the failover process |
| was triggered. |
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Recommended Action | Check the WAN settings and WAN failure detection method configured for the |
| primary link. |
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PPP Logs
This section describes the WAN PPP connection logs. The PPP type can be configured from the web management.
System Logs and Error Messages |
