Information About WANMon
WANMon is a flexible solution to address the WAN link recovery requirements for the following products and interfaces:
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Physical networks: 4G LTE and Ethernet (WAN port)
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Virtual links: Non-crypto map based IPSec tunnels (either legacy or FlexVPN); that is, any IPSec tunnel you configure as an interface.
You enable WANMon to monitor your WAN links and initiate link recovery actions on receipt of link failure triggers.
Built-in Recovery Actions
The following are the three levels of built-in recovery processes specific to the link type:
Link Type | Recovery Actions | ||
---|---|---|---|
Level 0 (Immediate) | Level 1 (Active) | Level 2 (Last-Resort) | |
4G LTE |
Clear interface, and then shut/no-shut |
Module reload |
System reload |
Ethernet |
Clear interface, and then shut/no-shut |
No action taken |
System reload |
Tunnel |
Shut/no-shut |
No action taken |
System reload |
Each level has two time-based thresholds based on which built-in recovery actions are taken. The following are the default settings for each level:
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threshold is the wait time in minutes after receipt of a link failure trigger to initiate the recovery action as set in the specified level.
-
mintime is the frequency to perform the recovery action if the link remains down.
The built-in values are:
Level |
threshold |
mintime |
Description |
---|---|---|---|
Level 0 |
10 min |
10 min |
Triggers Level 0 actions 10 minutes after the link went down. Repeat no more than every 10 minutes. |
Level 1 |
60 min |
60 min |
Triggers Level 1 actions 10 minutes after the link went down. Repeat no more than every 60 minutes. |
Level 2 |
480 min |
60 min |
Triggers Level 2 actions 480 minutes after the link went down. Repeat no more than every 60 minutes. |
Note |
If threshold values are specified as 0, no recovery actions are taken for that level. You can use this to avoid system reload (the built-in Level 2 recovery action) on receipt of a link failure trigger where other WAN links may be operational. |