Netgear SRX5308 SRX5308 Reference Manual - Page 345

PPP Logs, Table C-12. System Logs: WAN Status, PPPoE Idle Timeout, System Logs: WAN Status

Page 345 highlights

ProSafe Gigabit Quad WAN SSL VPN Firewall SRX5308 Reference Manual System Logs: WAN Status, Auto-Rollover (continued) Explanation The logs suggest that the failover was detected after 5 attempts instead of 3. However, the reason that the messages appear in the log is because of the WAN state transition logic, which is part of the failover algorithm. These logs can be interpreted as follows: The primary link failure is correctly detected after the 3rd attempt. Thereafter, the algorithm attempts to restart the WAN connection and checks once again to determine if WAN1 is still down. This results in the 4th failure detection message. If it is still down, then it starts a secondary link, and once the secondary link is up, the secondary link is marked as active. Meanwhile, the primary link has failed once more, and that results in the 5th failure detection message. Note that the 5th failure detection message and the message suggesting that the secondary link is active have the same timestamp, and so they happen in the same algorithm state- machine 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 the 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, the primary link was restarted after the 6th failure, that is, 3 failures after the failover process was triggered. Recommended Action Check the WAN settings and WAN failure detection method configured for the primary link. PPP Logs This section describes the WAN PPP connection logs. The PPP type can be configured from the Web Management Interface (see "Manually Configuring the Internet Connection" on page 2-11). • PPPoE Idle Timeout Logs Table C-12. System Logs: WAN Status, PPPoE Idle Timeout Message Nov 29 13:12:46 [SRX5308] [pppd] Starting connection Nov 29 13:12:49 [SRX5308] [pppd] Remote message: Success Nov 29 13:12:49 [SRX5308] [pppd] PAP authentication succeeded Nov 29 13:12:49 [SRX5308] [pppd] local IP address 50.0.0.62 Nov 29 13:12:49 [SRX5308] [pppd] remote IP address 50.0.0.1 Nov 29 13:12:49 [SRX5308] [pppd] primary DNS address 202.153.32.3 Nov 29 13:12:49 [SRX5308] [pppd] secondary DNS address 202.153.32.3 Nov 29 11:29:26 [SRX5308] [pppd] Terminating connection due to lack of activity. Nov 29 11:29:28 [SRX5308] [pppd] Connect time 8.2 minutes. Nov 29 11:29:28 [SRX5308] [pppd] Sent 1408 bytes, received 0 bytes. Nov 29 11:29:29 [SRX5308] [pppd] Connection terminated. System Logs and Error Messages C-7 v1.0, April 2010

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ProSafe Gigabit Quad WAN SSL VPN Firewall SRX5308 Reference Manual
System Logs and Error Messages
C-7
v1.0, April 2010
PPP Logs
This section describes the WAN PPP connection logs. The PPP type can be configured from the
Web Management Interface (see
“Manually Configuring the Internet Connection” on page 2-11
).
PPPoE Idle Timeout Logs
Explanation
The logs suggest that the failover was detected after 5 attempts instead of 3.
However, the reason that the messages appear in the log is because of the WAN
state transition logic, which is part of the failover algorithm. These logs can be
interpreted as follows:
The primary link failure is correctly detected after the 3rd attempt. Thereafter, the
algorithm attempts to restart the WAN connection and checks once again to
determine if WAN1 is still down. This results in the 4th failure detection message. If
it is still down, then it starts a secondary link, and once the secondary link is up, the
secondary link is marked as active. Meanwhile, the primary link has failed once
more, and that results in the 5th failure detection message. Note that the 5th failure
detection message and the message suggesting that the secondary link is active
have the same timestamp, and so they happen in the same algorithm state–
machine 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 the 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, the primary
link was restarted after the 6th failure, that is, 3 failures after the failover process
was triggered.
Recommended Action
Check the WAN settings and WAN failure detection method configured for the
primary link.
Table C-12. System Logs: WAN Status, PPPoE Idle Timeout
Message
Nov 29 13:12:46 [SRX5308] [pppd] Starting connection
Nov 29 13:12:49 [SRX5308] [pppd] Remote message: Success
Nov 29 13:12:49 [SRX5308] [pppd] PAP authentication succeeded
Nov 29 13:12:49 [SRX5308] [pppd] local IP address 50.0.0.62
Nov 29 13:12:49 [SRX5308] [pppd] remote IP address 50.0.0.1
Nov 29 13:12:49 [SRX5308] [pppd] primary DNS address 202.153.32.3
Nov 29 13:12:49 [SRX5308] [pppd] secondary DNS address 202.153.32.3
Nov 29 11:29:26 [SRX5308] [pppd] Terminating connection due to lack of
activity.
Nov 29 11:29:28 [SRX5308] [pppd] Connect time 8.2 minutes.
Nov 29 11:29:28 [SRX5308] [pppd] Sent 1408 bytes, received 0 bytes.
Nov 29 11:29:29 [SRX5308] [pppd] Connection terminated.
System Logs: WAN Status, Auto-Rollover (continued)